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Canon RF 400mm f/2.8 L Is USM Lens
Canon RF 400mm f/2.8 L Is USM Lens
Canon RF 400mm f/2.8 L Is USM Lens
Canon RF 400mm f/2.8 L Is USM Lens
Canon RF 400mm f/2.8 L Is USM Lens
Canon RF 400mm f/2.8 L Is USM Lens
Canon RF 400mm f/2.8 L Is USM Lens
Canon RF 400mm f/2.8 L Is USM Lens
Canon RF 400mm f/2.8 L Is USM Lens

Canon RF 400mm f/2.8 L Is USM Lens

$16,370.35

(124 reviews)

The Canon RF telephoto lens delivers performance and precision, making it an essential tool for photographers and videographers. With a lens aperture of f/2.8, this lens allows for depth of field and low-light capabilities. Featuring a minimum focal length of 400 mm, it is perfect for capturing distant subjects with clarity and detail. Designed with professionals in mind, this lens includes features such as an Ultrasonic Motor (USM) for fast and quiet autofocus. The construction is splashproof and dustproof, ensuring reliability in challenging environments. The use of fluorite glass and Super UD glass helps to minimize distortion and chromatic aberration, providing sharp images and accurate color reproduction.

The Canon RF telephoto lens delivers performance and precision, making it an essential tool for photographers and videographers. With a lens aperture of f/2.8, this lens allows for depth of field and low-light capabilities. Featuring a minimum focal length of 400 mm, it is perfect for capturing distant subjects with clarity and detail. Designed with professionals in mind, this lens includes features such as an Ultrasonic Motor (USM) for fast and quiet autofocus. The construction is splashproof and dustproof, ensuring reliability in challenging environments. The use of fluorite glass and Super UD glass helps to minimize distortion and chromatic aberration, providing sharp images and accurate color reproduction.

Canon RF 400mm f/2.8 L Is USM Lens

(124 reviews)

The Canon RF telephoto lens delivers performance and precision, making it an essential tool for photographers and videographers. With a lens aperture of f/2.8, this lens allows for depth of field and low-light capabilities. Featuring a minimum focal length of 400 mm, it is perfect for capturing distant subjects with clarity and detail. Designed with professionals in mind, this lens includes features such as an Ultrasonic Motor (USM) for fast and quiet autofocus. The construction is splashproof and dustproof, ensuring reliability in challenging environments. The use of fluorite glass and Super UD glass helps to minimize distortion and chromatic aberration, providing sharp images and accurate color reproduction.

The Canon RF telephoto lens delivers performance and precision, making it an essential tool for photographers and videographers. With a lens aperture of f/2.8, this lens allows for depth of field and low-light capabilities. Featuring a minimum focal length of 400 mm, it is perfect for capturing distant subjects with clarity and detail. Designed with professionals in mind, this lens includes features such as an Ultrasonic Motor (USM) for fast and quiet autofocus. The construction is splashproof and dustproof, ensuring reliability in challenging environments. The use of fluorite glass and Super UD glass helps to minimize distortion and chromatic aberration, providing sharp images and accurate color reproduction.

$16,370.35 - $25,533.53

in 19 offers

The lowest price for Canon RF 400mm f/2.8 L Is USM Lens right now is $16,370.35 at Camera-Warehouse, compared across 17 retailers.

The all-time low was $15,299.95 on 17 Nov 2025 — today's price is 7% above the lowest ever. That's a little above the best price we've seen.

Prices last updated 8 June 2026.

Price comparison

Price data powered by pricesAPI.io

Last updated at 08/06/2026 04:08:58

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
Camera-Warehouse

$16,370.35

Canon RF 400mm f/2.8L IS USM Lens

Free delivery between 11–18 June

CameraPro

$16,999.00

Canon RF 400mm f/2.8L IS USM Lens

Delivery between 11–16 June $12.90

Team Digital

$17,655.55

Canon RF40028LIS RF400mm f/2.8L IS USM

Delivery by Fri $20.05

CameraClix

$17,911.80

Canon RF 400mm f/2.8L IS USM Lens

Free delivery

RYDA - We'll Negotiate

$18,514.41

Canon RF 400mm f/2.8L IS USM Lens - Live Price Matching

Delivery $7.95

Georges Cameras

$18,599.00

Canon RF 400mm f/2.8L IS USM Lens | Super-Telephoto L-Series | Optical Image Stabilizer 5.5 Stops

Delivery $9.90

Camera West

$18,994.90

Canon RF 400mm f2.8L IS USM Lens

Free delivery

Unique Photo

$18,994.90

Canon RF 400mm F2.8 L IS USM Lens

Delivery $141.76

Diamonds Camera

$18,995.00

Canon RF 400mm F2.8 L IS Lens RF Mount Camera Lens - Best For Sport & Wildlife Photography

Free delivery between Wed – Thu

Everyday Rewards

$19,399.00

Canon RF 400mm f/2.8L IS USM Lens

Delivery between 11–15 June $10

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

A rockstar of a lens!
30 June 2021PETER

originally posted on adorama.com

Camera body: 7D MK IITo begin, a lens cannot make up for poor composition or bad techniques. That is up to the photographer to practice and to hone the artistry. However, having the best tool you personally can afford will enhance your experience and perhaps allow you to focus on the other aspects of your photography journey. Granted, it is expensive, but in this case, you can absolutely reap the benefit of this investment.I scheduled a bucket list trip to Lake Clark National Park, AK, to see and learn about the coastal brown bears and felt that it was time to upgrade from a competitor's 150-600 lens. While that lens is OK, I felt that this faster lens would work better under the clouds and rain of a temperate rain forest. It did not disappoint.Prior to ... MoreCamera body: 7D MK IITo begin, a lens cannot make up for poor composition or bad techniques. That is up to the photographer to practice and to hone the artistry. However, having the best tool you personally can afford will enhance your experience and perhaps allow you to focus on the other aspects of your photography journey. Granted, it is expensive, but in this case, you can absolutely reap the benefit of this investment.I scheduled a bucket list trip to Lake Clark National Park, AK, to see and learn about the coastal brown bears and felt that it was time to upgrade from a competitor's 150-600 lens. While that lens is OK, I felt that this faster lens would work better under the clouds and rain of a temperate rain forest. It did not disappoint.Prior to departing, I calibrated the lens with my 7D and found that it had a touch of back focusing. Given that is is a Canon lens on a Canon body, the calibration was super simple.The autofocus is superb, but don't expect to go from a 400m target immediately to refocusing on a 5m target. Step it closer incrementally or use the focus ring to get it close then use the auto. Could there be a technique I'm missing? Probably. That's the joy of learning. The image stabilization worked without issue. Don't forget to turn it off when using a tripod.As it was pretty much guaranteed to rain, I kept my kit in a rain sleeve. Additionally, I used a ProMediaGear monopod with a ball head as the lens, like the 150-600, is a touch on the heavy side. Though the bears are not the fastest animals, you do not want to reach muscle failure holding your kit waiting for the cubs to look up.

Absolutely amazing
10 March 2023Robert

originally posted on bhphotovideo.com

I had more than a few reservations about ordering this. My biggest concern was whether it really could be hand-held. Several videos implied that it could be, but I still wasn't sure. Even Canon hedged (understandably) by suggesting it probably could be hand-held, albeit not for extended periods of time. Well, I got this yesterday and, even though I don't have very strong arms, I was able to hand-hold this without too much effort. OK, the build, quality, features, etc. are everything (and then some) I expected from Canon. Naturally, the images it produces are great as well. OK, it's length (and cost) certainly are such that it's not something everybody will need (OK, I really don't need it either). But if you're wondering if it really can be used without lugging a ... MoreI had more than a few reservations about ordering this. My biggest concern was whether it really could be hand-held. Several videos implied that it could be, but I still wasn't sure. Even Canon hedged (understandably) by suggesting it probably could be hand-held, albeit not for extended periods of time. Well, I got this yesterday and, even though I don't have very strong arms, I was able to hand-hold this without too much effort. OK, the build, quality, features, etc. are everything (and then some) I expected from Canon. Naturally, the images it produces are great as well. OK, it's length (and cost) certainly are such that it's not something everybody will need (OK, I really don't need it either). But if you're wondering if it really can be used without lugging a tripod along, you can relax -- it's weight and balance are such that it really is a joy using it, and I expect I'll like it even more as time goes on.

Canon's best bang for bucks Macro Lens
7 January 2022samimpl

originally posted on ebay.com

Now, this isn't cheapest Canon macro lens. Still at eBay used prices, this is a no brainer for people looking for Macro Lens. 100mm is a great range for Macro. Something shorter and you have to be very close casting unwanted shadows at uncomfortablely close distances to get 1:1 macro. Something longer and you are too far and harder to compose or keep steady. Canon EF 100mm f/2.8 USM Macro Lens (make sure you are get USM version which cost only little more than non-USM) has USM focus motor which is fast, quiet, and accurate. While many people tend to focus manually and on a tripod for macro, USM makes this lens more convenient as it has focus manual override, meaning you can af and still manually fine tune. Also, it makes it pleasurable to use for other uses like ... MoreNow, this isn't cheapest Canon macro lens. Still at eBay used prices, this is a no brainer for people looking for Macro Lens. 100mm is a great range for Macro. Something shorter and you have to be very close casting unwanted shadows at uncomfortablely close distances to get 1:1 macro. Something longer and you are too far and harder to compose or keep steady. Canon EF 100mm f/2.8 USM Macro Lens (make sure you are get USM version which cost only little more than non-USM) has USM focus motor which is fast, quiet, and accurate. While many people tend to focus manually and on a tripod for macro, USM makes this lens more convenient as it has focus manual override, meaning you can af and still manually fine tune. Also, it makes it pleasurable to use for other uses like portraits which it is excellent at. With 100mm with fast f/2.8 aperture gives you very nice bokeh and subject separation. The images are very sharp even wide open at f/2.8, comparable to quality prime lenses stopped down to f/2.8. There is one better lens than this lens which is Canon EF 100mm f/2.8 L USM IS Macro Lens. I have used that lens and ended up selling that lens to go back to this lens. Here are my reasons. Image quality wise, they are so comparable. There really isn't much to improve upon the image quality ofUSM non-L version. L is better but so marginally that image quality isn't a good reason for upgrade. Two biggest reason for upgrade is weather sealing/build quality and image stabilization. I didn't need either of those. I don't shoot macro shots in the rain or snow. USM version build quality is more than good enough. As for image stabilization, it's great for non-macro low light situations. I found it still difficult to hand hold even with image stabilization for critical macro shots under less than ideal light. You still want to use a tripod even with image stabilization for sharpest reliable results. (Perhaps I just have too unstable hands ...) I also found that I don't really need image stabilization under normal situations to get sharp images using 100mm f/2.8 handheld especially with modern cameras. Now there are other reasons, perhaps more important reasons for the L version than the two mentioned. It looks very nice. It's much more attractive looking lens than the USM version. Also, since it a "L" lens with the red ring, you can take pride in the fact that you are shooting with the very best that Canon is offering. Peace of mind with no other macro lens to upgrade to on an EF mount. (Until you "need" to get the RF version...) Well, there you have it. Since none of the reasons really attractive me to the L, I got rid of it and got 135mm f2 L USM and 100mm f/2.8 USM Macro instead. Thanks for reading and hope "my opinion" and experience help with your buying decisions~

Specification

Lens system
Closest focusing distance2.5 m
Maximum aperture number2.8
Number of diaphragm blades9
Viewing angle, horizontal5.3°

Price comparison

Updated about 17 hours ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
Camera-Warehouse

$16,370.35

Canon RF 400mm f/2.8L IS USM Lens

Free delivery between 11–18 June

CameraPro

$16,999.00

Canon RF 400mm f/2.8L IS USM Lens

Delivery between 11–16 June $12.90

Team Digital

$17,655.55

Canon RF40028LIS RF400mm f/2.8L IS USM

Delivery by Fri $20.05

CameraClix

$17,911.80

Canon RF 400mm f/2.8L IS USM Lens

Free delivery

RYDA - We'll Negotiate

$18,514.41

Out of stock

Canon RF 400mm f/2.8L IS USM Lens - Live Price Matching

Delivery $7.95

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

A rockstar of a lens!
30 June 2021

Camera body: 7D MK IITo begin, a lens cannot make up for poor composition or bad techniques. That is up to the photographer to practice and to hone the artistry. However, having the best tool you personally can afford will enhance your experience and perhaps allow you to focus on the other aspects of your photography journey. Granted, it is expensive, but in this case, you can absolutely reap the benefit of this investment.I scheduled a bucket list trip to Lake Clark National Park, AK, to see and learn about the coastal brown bears and felt that it was time to upgrade from a competitor's 150-600 lens. While that lens is OK, I felt that this faster lens would work better under the clouds and rain of a temperate rain forest. It did not disappoint.Prior to ... MoreCamera body: 7D MK IITo begin, a lens cannot make up for poor composition or bad techniques. That is up to the photographer to practice and to hone the artistry. However, having the best tool you personally can afford will enhance your experience and perhaps allow you to focus on the other aspects of your photography journey. Granted, it is expensive, but in this case, you can absolutely reap the benefit of this investment.I scheduled a bucket list trip to Lake Clark National Park, AK, to see and learn about the coastal brown bears and felt that it was time to upgrade from a competitor's 150-600 lens. While that lens is OK, I felt that this faster lens would work better under the clouds and rain of a temperate rain forest. It did not disappoint.Prior to departing, I calibrated the lens with my 7D and found that it had a touch of back focusing. Given that is is a Canon lens on a Canon body, the calibration was super simple.The autofocus is superb, but don't expect to go from a 400m target immediately to refocusing on a 5m target. Step it closer incrementally or use the focus ring to get it close then use the auto. Could there be a technique I'm missing? Probably. That's the joy of learning. The image stabilization worked without issue. Don't forget to turn it off when using a tripod.As it was pretty much guaranteed to rain, I kept my kit in a rain sleeve. Additionally, I used a ProMediaGear monopod with a ball head as the lens, like the 150-600, is a touch on the heavy side. Though the bears are not the fastest animals, you do not want to reach muscle failure holding your kit waiting for the cubs to look up.

PETER originally posted on adorama.com
Absolutely amazing
10 March 2023

I had more than a few reservations about ordering this. My biggest concern was whether it really could be hand-held. Several videos implied that it could be, but I still wasn't sure. Even Canon hedged (understandably) by suggesting it probably could be hand-held, albeit not for extended periods of time. Well, I got this yesterday and, even though I don't have very strong arms, I was able to hand-hold this without too much effort. OK, the build, quality, features, etc. are everything (and then some) I expected from Canon. Naturally, the images it produces are great as well. OK, it's length (and cost) certainly are such that it's not something everybody will need (OK, I really don't need it either). But if you're wondering if it really can be used without lugging a ... MoreI had more than a few reservations about ordering this. My biggest concern was whether it really could be hand-held. Several videos implied that it could be, but I still wasn't sure. Even Canon hedged (understandably) by suggesting it probably could be hand-held, albeit not for extended periods of time. Well, I got this yesterday and, even though I don't have very strong arms, I was able to hand-hold this without too much effort. OK, the build, quality, features, etc. are everything (and then some) I expected from Canon. Naturally, the images it produces are great as well. OK, it's length (and cost) certainly are such that it's not something everybody will need (OK, I really don't need it either). But if you're wondering if it really can be used without lugging a tripod along, you can relax -- it's weight and balance are such that it really is a joy using it, and I expect I'll like it even more as time goes on.

Robert originally posted on bhphotovideo.com
Canon's best bang for bucks Macro Lens
7 January 2022

Now, this isn't cheapest Canon macro lens. Still at eBay used prices, this is a no brainer for people looking for Macro Lens. 100mm is a great range for Macro. Something shorter and you have to be very close casting unwanted shadows at uncomfortablely close distances to get 1:1 macro. Something longer and you are too far and harder to compose or keep steady. Canon EF 100mm f/2.8 USM Macro Lens (make sure you are get USM version which cost only little more than non-USM) has USM focus motor which is fast, quiet, and accurate. While many people tend to focus manually and on a tripod for macro, USM makes this lens more convenient as it has focus manual override, meaning you can af and still manually fine tune. Also, it makes it pleasurable to use for other uses like ... MoreNow, this isn't cheapest Canon macro lens. Still at eBay used prices, this is a no brainer for people looking for Macro Lens. 100mm is a great range for Macro. Something shorter and you have to be very close casting unwanted shadows at uncomfortablely close distances to get 1:1 macro. Something longer and you are too far and harder to compose or keep steady. Canon EF 100mm f/2.8 USM Macro Lens (make sure you are get USM version which cost only little more than non-USM) has USM focus motor which is fast, quiet, and accurate. While many people tend to focus manually and on a tripod for macro, USM makes this lens more convenient as it has focus manual override, meaning you can af and still manually fine tune. Also, it makes it pleasurable to use for other uses like portraits which it is excellent at. With 100mm with fast f/2.8 aperture gives you very nice bokeh and subject separation. The images are very sharp even wide open at f/2.8, comparable to quality prime lenses stopped down to f/2.8. There is one better lens than this lens which is Canon EF 100mm f/2.8 L USM IS Macro Lens. I have used that lens and ended up selling that lens to go back to this lens. Here are my reasons. Image quality wise, they are so comparable. There really isn't much to improve upon the image quality ofUSM non-L version. L is better but so marginally that image quality isn't a good reason for upgrade. Two biggest reason for upgrade is weather sealing/build quality and image stabilization. I didn't need either of those. I don't shoot macro shots in the rain or snow. USM version build quality is more than good enough. As for image stabilization, it's great for non-macro low light situations. I found it still difficult to hand hold even with image stabilization for critical macro shots under less than ideal light. You still want to use a tripod even with image stabilization for sharpest reliable results. (Perhaps I just have too unstable hands ...) I also found that I don't really need image stabilization under normal situations to get sharp images using 100mm f/2.8 handheld especially with modern cameras. Now there are other reasons, perhaps more important reasons for the L version than the two mentioned. It looks very nice. It's much more attractive looking lens than the USM version. Also, since it a "L" lens with the red ring, you can take pride in the fact that you are shooting with the very best that Canon is offering. Peace of mind with no other macro lens to upgrade to on an EF mount. (Until you "need" to get the RF version...) Well, there you have it. Since none of the reasons really attractive me to the L, I got rid of it and got 135mm f2 L USM and 100mm f/2.8 USM Macro instead. Thanks for reading and hope "my opinion" and experience help with your buying decisions~

samimpl originally posted on ebay.com
Excellent
12 October 2021

I was debating in my mind for a while which 70-200mm lens to go for. I have a Canon 100-400 f4.5-5.6 IS II L Lens which is an absolutely brilliant lens. However, it is heavy to carry around. So, do I go for f2.8 lens which would add further capabilities with creativity with depth of field, in addition to my 100-400 lens? Especially, when the excellent Canon 70-200 f2.8 IS II second hand price has dropped since the version III, and price is comparable (£150-200 more compared to Canon 20-200 f4 IS II version second hand). At the end, after much thought, I went for the f4 lens, due to it being compact, easy to carry around and low weight during cityscapes and landscapes photography, which is my main interests. I didn't want to end up with two heavy lenses. I had ... MoreI was debating in my mind for a while which 70-200mm lens to go for. I have a Canon 100-400 f4.5-5.6 IS II L Lens which is an absolutely brilliant lens. However, it is heavy to carry around. So, do I go for f2.8 lens which would add further capabilities with creativity with depth of field, in addition to my 100-400 lens? Especially, when the excellent Canon 70-200 f2.8 IS II second hand price has dropped since the version III, and price is comparable (£150-200 more compared to Canon 20-200 f4 IS II version second hand). At the end, after much thought, I went for the f4 lens, due to it being compact, easy to carry around and low weight during cityscapes and landscapes photography, which is my main interests. I didn't want to end up with two heavy lenses. I had researched both version 1 and version 2 lenses of f4 - version 2 lens is a significant upgrade to the version 1 lens, with 5 stop imaging stabilizer, and better image quality. Also, version 2 has shorter minimum focusing distance. i buy second hand only, and version 2 is rarely available second hand at wex website. Keeping a close eye on the wex website for a second hand lens, as I was not in any rush to buy, and as soon as it was available, I bought it. As mentioned previously, the version 2 has shorter minimum focusing distance, and this produces beautiful bokeh. when focusing at minimum distance....I am pleased I did not go for f2.8 as I have a Canon 135mm f2 lens which is a good combination for use with the portable 70-200 f4 for events and portraiture. So far, I have been impressed with the image quality of the lens.

Photographer originally posted on wexphotographic.com
Extremely high quality lens
21 October 2021

This is one of the finest lenses that canon has ever made. If you want to shoot stock photography and are willing to use an DSLR instead of a mirrorless body, pair this with a 5D Mark IV and you will have one the best full frame Canons out there. That combination is a very good choice for low light. Distortion and chromic aberration is virtually nil. If you want to shoot for the pixel counters you have to have top drawer equipment. Add a Canon EF 24-70mm f/2.8L II USM Lens and you have the basis of a very solid camera system that covers medium wide angle to medium telephoto. No, it is not the newest cutting edge tech. But it will do almost everything that the new mirrorless cameras will, and do it cheaper. And it doesnt overheat! Having to stop shooting to let your ... MoreThis is one of the finest lenses that canon has ever made. If you want to shoot stock photography and are willing to use an DSLR instead of a mirrorless body, pair this with a 5D Mark IV and you will have one the best full frame Canons out there. That combination is a very good choice for low light. Distortion and chromic aberration is virtually nil. If you want to shoot for the pixel counters you have to have top drawer equipment. Add a Canon EF 24-70mm f/2.8L II USM Lens and you have the basis of a very solid camera system that covers medium wide angle to medium telephoto. No, it is not the newest cutting edge tech. But it will do almost everything that the new mirrorless cameras will, and do it cheaper. And it doesnt overheat! Having to stop shooting to let your $3,000 mirrorless body cool down so it wont melt, can wreck a photoshoot.

hil_3916 originally posted on ebay.com
Great lens
12 February 2023

I purchased this lens a couple months ago and have used it more then any other lens I own. Sharp and crisp photos and the auto focus is super fast on my 1D X Mark II and 5D Mark IV. One complaint I have noticed from others is it does not feel like a $1300 lens and I would agree. It doesn't feel as heavy duty as some other Canon lens but I don't know if that really matters as long it produces sharp photos. I have a Canon 70mm to 200mm and a Canon 100mm to 400mm and I know they will be damaged just as this lens would be if dropped. If you want an awesome macro lens, the Canon EF 100mm f/2.8 macro IS USM lens is the way to go in my opinion.d

Michael originally posted on bhphotovideo.com
High-Quality Detail
21 April 2023

First time out in the field with this lens and it stood up well to the cold temps, sideways rain, and wind that Spring tends to bring to the Skagit Valley Tulip Festival.It was easy to use, even for an amateur like me.After considering this purchase for quite a while I'm happy to have made the investment. I can hardly wait to take this lens hiking and be able to capture the finer details of the forest. What a great addition to my already-found love of landscape/nature photography.Photos were taken with a Canon EOS 6D Mark II, which was also purchased through B&H.

Jolene originally posted on bhphotovideo.com
Love The Images - Crossing My Fingers On Durability
17 January 2022

Bought this used in very good condition, durability remains to be seen. Some of these lenses acquire a slippage in the focus ring that can eventually make them unusable. First lens I bought had the early signs of this problem and was returned. That said, I've also seen lots of reviews from long time owners that make no mention of this issue so apparently it doesn't happen to all of them. What I can say at this point, the focus ring on the lens I have now doesn't have any slip, the focus is almost instant and the images are beautiful. This is also the first lens I've owned with IS and I already LOVE the added possibilities that brings. Amazing really. Bottom line, I have a full frame 5D and shoot mostly people and critters, and I'm expecting this will be the only ... MoreBought this used in very good condition, durability remains to be seen. Some of these lenses acquire a slippage in the focus ring that can eventually make them unusable. First lens I bought had the early signs of this problem and was returned. That said, I've also seen lots of reviews from long time owners that make no mention of this issue so apparently it doesn't happen to all of them. What I can say at this point, the focus ring on the lens I have now doesn't have any slip, the focus is almost instant and the images are beautiful. This is also the first lens I've owned with IS and I already LOVE the added possibilities that brings. Amazing really. Bottom line, I have a full frame 5D and shoot mostly people and critters, and I'm expecting this will be the only lens on that camera on most days from this point on. Just wish I would've bought one sooner.

ricdeco-0 originally posted on ebay.com
Miles better than the 45mm TS-E!
17 October 2022

After extensive side-by-side evaluation, as much as I wanted to be ok with the 45mm TS-E, the 50mm was just so much better I couldn't be ok with the older design. In addition to being *much* sharper, it has virtually zero chromatic aberration, better color rendering and no distortion-all issues with the 45mm lens. The 45mm also has some bad flaring issues that crop up, especially at night with light sources near the corners of the frame.In fact, 50mm TS-E resolves better than any other L-series lens I own, including my RF 24-70, & the 24mm and 17mm EF TS-E lenses. It practically embarrasses the 24mm TS-E and definitely makes me anxious for an update to that lens. I use it adapted to the EOS R5.My only complaints with this lens are of no fault of its own-50mm is ... MoreAfter extensive side-by-side evaluation, as much as I wanted to be ok with the 45mm TS-E, the 50mm was just so much better I couldn't be ok with the older design. In addition to being *much* sharper, it has virtually zero chromatic aberration, better color rendering and no distortion-all issues with the 45mm lens. The 45mm also has some bad flaring issues that crop up, especially at night with light sources near the corners of the frame.In fact, 50mm TS-E resolves better than any other L-series lens I own, including my RF 24-70, & the 24mm and 17mm EF TS-E lenses. It practically embarrasses the 24mm TS-E and definitely makes me anxious for an update to that lens. I use it adapted to the EOS R5.My only complaints with this lens are of no fault of its own-50mm is a tough focal length for architectural photography, and the macro magnification isn't enough to scan film with. Despite those very personal complaints I still love this lens and relish any chance to bust it out.

Colin originally posted on bhphotovideo.com
You can't find a better lens in this range.
27 October 2021

There is just no comparison to this lens in this range. I have tried many different lenses and still come back to the 100-400L. It is by far the fastest and sharpest lens you can get in this range. I shoot a lot of sports and action photography as well as air shows and the success rate I have with good sharp photos with this lens is better than any other lens I have tried. I have put it against the Sigma 150-600 both the contemporary and the sports version. I have also tried the Tamron 150-600. They are good lenses and offer a slightly better reach but I find with the Canon lens I can always crop in on the image if needed because the quality of the image is good enough.I waited for years to finally make the purchase because of the cost but I definitely do not ... MoreThere is just no comparison to this lens in this range. I have tried many different lenses and still come back to the 100-400L. It is by far the fastest and sharpest lens you can get in this range. I shoot a lot of sports and action photography as well as air shows and the success rate I have with good sharp photos with this lens is better than any other lens I have tried. I have put it against the Sigma 150-600 both the contemporary and the sports version. I have also tried the Tamron 150-600. They are good lenses and offer a slightly better reach but I find with the Canon lens I can always crop in on the image if needed because the quality of the image is good enough.I waited for years to finally make the purchase because of the cost but I definitely do not regret it. If you want the best and can afford it this is the lens for you.

RYAN originally posted on adorama.com

Specification

Lens system
Closest focusing distance2.5 m
Maximum aperture number2.8
Number of diaphragm blades9
Viewing angle, horizontal5.3°

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