Sigma f/2.8 EX DC OS HSM Lens Canon, 17-50mm
Sigma's 17-50 mm F2.8 EX DC OS HSM large-aperture standard zoom lens covers a focal length from 17 mm wide angle and offers a large aperture of F2.8 throughout the entire zoom range, making it ideal for many types of photography especially portraiture and landscapes. The OS, Sigma's anti shake feature offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. The OS feature allows Sony and Pentax users the option of viewing a stabilized image in the viewfinder, a feature offered only by Sigma. HSM provides fast and quiet AF. Sigma's own FLD glass elements, which have performance equal to fluorite along with two glass mold and one hybrid aspherical lens, provide excellent correction for all types of aberrations. The super multi-layer coating reduces flare and ghosting. This lens boasts superior peripheral brightness and provides sharp, high contrast images even at the maximum apertures. With a minimum focusing distance of 11 inches throughout the entire zoom range and a magnification ratio of 1:5. If you need to be ready for any photographic opportunity, even low light, then this Sigma lens is perfect. Compact and light weight, it's a necessary addition to your camera bag.
Sigma's 17-50 mm F2.8 EX DC OS HSM large-aperture standard zoom lens covers a focal length from 17 mm wide angle and offers a large aperture of F2.8 throughout the entire zoom range, making it ideal for many types of photography especially portraiture and landscapes. The OS, Sigma's anti shake feature offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. The OS feature allows Sony and Pentax users the option of viewing a stabilized image in the viewfinder, a feature offered only by Sigma. HSM provides fast and quiet AF. Sigma's own FLD glass elements, which have performance equal to fluorite along with two glass mold and one hybrid aspherical lens, provide excellent correction for all types of aberrations. The super multi-layer coating reduces flare and ghosting. This lens boasts superior peripheral brightness and provides sharp, high contrast images even at the maximum apertures. With a minimum focusing distance of 11 inches throughout the entire zoom range and a magnification ratio of 1:5. If you need to be ready for any photographic opportunity, even low light, then this Sigma lens is perfect. Compact and light weight, it's a necessary addition to your camera bag.
Sigma's 17-50 mm F2.8 EX DC OS HSM large-aperture standard zoom lens covers a focal length from 17 mm wide angle and offers a large aperture of F2.8 throughout the entire zoom range, making it ideal for many types of photography especially portraiture and landscapes. The OS, Sigma's anti shake feature offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. The OS feature allows Sony and Pentax users the option of viewing a stabilized image in the viewfinder, a feature offered only by Sigma. HSM provides fast and quiet AF. Sigma's own FLD glass elements, which have performance equal to fluorite along with two glass mold and one hybrid aspherical lens, provide excellent correction for all types of aberrations. The super multi-layer coating reduces flare and ghosting. This lens boasts superior peripheral brightness and provides sharp, high contrast images even at the maximum apertures. With a minimum focusing distance of 11 inches throughout the entire zoom range and a magnification ratio of 1:5. If you need to be ready for any photographic opportunity, even low light, then this Sigma lens is perfect. Compact and light weight, it's a necessary addition to your camera bag.
Sigma's 17-50 mm F2.8 EX DC OS HSM large-aperture standard zoom lens covers a focal length from 17 mm wide angle and offers a large aperture of F2.8 throughout the entire zoom range, making it ideal for many types of photography especially portraiture and landscapes. The OS, Sigma's anti shake feature offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. The OS feature allows Sony and Pentax users the option of viewing a stabilized image in the viewfinder, a feature offered only by Sigma. HSM provides fast and quiet AF. Sigma's own FLD glass elements, which have performance equal to fluorite along with two glass mold and one hybrid aspherical lens, provide excellent correction for all types of aberrations. The super multi-layer coating reduces flare and ghosting. This lens boasts superior peripheral brightness and provides sharp, high contrast images even at the maximum apertures. With a minimum focusing distance of 11 inches throughout the entire zoom range and a magnification ratio of 1:5. If you need to be ready for any photographic opportunity, even low light, then this Sigma lens is perfect. Compact and light weight, it's a necessary addition to your camera bag.
in 21 offers
The lowest price for Sigma f/2.8 EX DC OS HSM Lens Canon, 17-50mm right now is $252.57 at eBay.com.au, compared across 4 retailers.
The all-time low was $189.42 on 12 Feb 2026 — today's price is 33% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 10 June 2026.
Last updated at 10/06/2026 00:44:38
Sigma Macro 50 Mm F/2.8 Ex Dg Lens For Canon Ef [n Mint] W/hood From
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Sigma 50mm F/2.8 Ex Dg Macro Lens For Canon
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
【app Mint】sigma17-50mm F/2.8 Ex Dc Os Hsm Zoom Lens For Nikon From
Delivery $62.70
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
[almost Unused] Sigma 17-50mm F2.8 Ex Dc Os Hsm Zoom Lens For Nikon F
Delivery $62.70
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Sigma EX EX DC OS HSM 17-50mm f/2.8 OS HSM DC Lens
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Sigma 17-50mm F/2.8 Ex Dc Os Hsm For Nikon F Mount
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
【 Almost Mint 】sigma 17-50mm F/2.8 Ex Dc Os Hsm Lens For Nikon From
Delivery $62.70
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
[near Mint W/hood] Sigma 17-50mm F/2.8 Ex Dc Os Hsm Lens Canon Ef
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Near Mint-sigma 17-50mm F/2.8 Ex Dc Os Hsm Fld Standard Zoom Lens For
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
[almost Unused] Sigma 17-50mm F2.8 Ex Dc Os Hsm For Canon Ef Mount
Delivery $62.70
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
originally posted on ebay.com
Very good stabilization. Low distortion across the lens. Auto-focus starts to really struggle in low light but still not bad. Still manages to catch low-light shots that I would not expect to catch. Received the lens in good condition and works flawlessly.
originally posted on ebay.com
This is not a light weight lens but it's great quality and feels solid. It's pretty sharp wide open at F2.8 in the corners and better in the centre, and even better at F4 or 5.6. I'd be happy shooting wide open if I had to, and the fast aperture helps in low light. It comes with a lens hood but it's worth noting it doesn't have full time manual focusing, turn the focus ring in autofocus mode and you could damage the motor. You must switch to manual focus before using the manual focus ring. The lens is designed for crop sensor cameras and isn't compatable with full frame. It also focuses fairly close but not as close as the Sigma 17-70mm (which is crazy close focus) but thats not a fixed 2.8. All in all a great lens for the money.
originally posted on webuy.com
This is an APS-C EF lens. I don't have an APS-C camera - I have an EF mount camera but it's full frame and this would vignette on it something rotten (it doesn't have an APS-C mode) - I didn't buy it for that camera.I bought it for my Micro Four Thirds camera which is a 2x crop, and I mount it using a Viltrox EF-M2 focal reducer which gives a 0.71x magnification.This means that mounted onto my GH5 I have an equivalent of 12-35mm zoom at F2 (which has the full frame equivalent of a standard zoom at 24-70mm). Taking the cameras crop into account, the field of view on the GH5 with this set up is very similar to what you would get on a APS-C camera (slightly wider).OK, so it is larger and heavier than the Lumix 12-35mm F2.8 but it ends up as a faster lens and ... MoreThis is an APS-C EF lens. I don't have an APS-C camera - I have an EF mount camera but it's full frame and this would vignette on it something rotten (it doesn't have an APS-C mode) - I didn't buy it for that camera.I bought it for my Micro Four Thirds camera which is a 2x crop, and I mount it using a Viltrox EF-M2 focal reducer which gives a 0.71x magnification.This means that mounted onto my GH5 I have an equivalent of 12-35mm zoom at F2 (which has the full frame equivalent of a standard zoom at 24-70mm). Taking the cameras crop into account, the field of view on the GH5 with this set up is very similar to what you would get on a APS-C camera (slightly wider).OK, so it is larger and heavier than the Lumix 12-35mm F2.8 but it ends up as a faster lens and quite a bit cheaper (even if I had to by the Viltrox, which I didn't) and provides me with a decent, sharp lens with autofocus working fine, although the motor is noisier than the usual Panasonic motor so if used in video it would be picked up by on camera mics. That's why it dropped a star.
| Angle of View | 72.4° - 27.9° |
| Autofocus | Yes |
| Dimensions | Approx. 3.3 x 3.6" (8.38 x 9.14 cm) |
| Focal Length | 17 - 50 mm |
| Groups/Elements | 13/17 |
Sigma Macro 50 Mm F/2.8 Ex Dg Lens For Canon Ef [n Mint] W/hood From
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Sigma 50mm F/2.8 Ex Dg Macro Lens For Canon
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
【app Mint】sigma17-50mm F/2.8 Ex Dc Os Hsm Zoom Lens For Nikon From
Delivery $62.70
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
[almost Unused] Sigma 17-50mm F2.8 Ex Dc Os Hsm Zoom Lens For Nikon F
Delivery $62.70
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Sigma EX EX DC OS HSM 17-50mm f/2.8 OS HSM DC Lens
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Very good stabilization. Low distortion across the lens. Auto-focus starts to really struggle in low light but still not bad. Still manages to catch low-light shots that I would not expect to catch. Received the lens in good condition and works flawlessly.
This is not a light weight lens but it's great quality and feels solid. It's pretty sharp wide open at F2.8 in the corners and better in the centre, and even better at F4 or 5.6. I'd be happy shooting wide open if I had to, and the fast aperture helps in low light. It comes with a lens hood but it's worth noting it doesn't have full time manual focusing, turn the focus ring in autofocus mode and you could damage the motor. You must switch to manual focus before using the manual focus ring. The lens is designed for crop sensor cameras and isn't compatable with full frame. It also focuses fairly close but not as close as the Sigma 17-70mm (which is crazy close focus) but thats not a fixed 2.8. All in all a great lens for the money.
This is an APS-C EF lens. I don't have an APS-C camera - I have an EF mount camera but it's full frame and this would vignette on it something rotten (it doesn't have an APS-C mode) - I didn't buy it for that camera.I bought it for my Micro Four Thirds camera which is a 2x crop, and I mount it using a Viltrox EF-M2 focal reducer which gives a 0.71x magnification.This means that mounted onto my GH5 I have an equivalent of 12-35mm zoom at F2 (which has the full frame equivalent of a standard zoom at 24-70mm). Taking the cameras crop into account, the field of view on the GH5 with this set up is very similar to what you would get on a APS-C camera (slightly wider).OK, so it is larger and heavier than the Lumix 12-35mm F2.8 but it ends up as a faster lens and ... MoreThis is an APS-C EF lens. I don't have an APS-C camera - I have an EF mount camera but it's full frame and this would vignette on it something rotten (it doesn't have an APS-C mode) - I didn't buy it for that camera.I bought it for my Micro Four Thirds camera which is a 2x crop, and I mount it using a Viltrox EF-M2 focal reducer which gives a 0.71x magnification.This means that mounted onto my GH5 I have an equivalent of 12-35mm zoom at F2 (which has the full frame equivalent of a standard zoom at 24-70mm). Taking the cameras crop into account, the field of view on the GH5 with this set up is very similar to what you would get on a APS-C camera (slightly wider).OK, so it is larger and heavier than the Lumix 12-35mm F2.8 but it ends up as a faster lens and quite a bit cheaper (even if I had to by the Viltrox, which I didn't) and provides me with a decent, sharp lens with autofocus working fine, although the motor is noisier than the usual Panasonic motor so if used in video it would be picked up by on camera mics. That's why it dropped a star.
Review written May 24, 2016. Camera used on Nikon D7000. Professional photographer (Weddings, Studio/Location Portraits) Needed for low light environments such as Churches, reception halls and locations which prohibit flash. Headshot capability to separate subject from the background. Primarily prefer prime lens but needed the zoom capability. Normally shoot with a full frame and Crop sensor (Nikon DX) cameras. We are 100 % sure we will always have DX cameras so decided to buy dedicated professional lenses to give us close focal lengths to the full frames lenses so we bought Sigma 17-55 OS version and the Sigma 50-150 non OS to reduce weight. The Sigma 17-55 is a wonderfully sharpe and fast lens (we don't shoot sports) With OS on its great. No need to have it on all ... MoreReview written May 24, 2016. Camera used on Nikon D7000. Professional photographer (Weddings, Studio/Location Portraits) Needed for low light environments such as Churches, reception halls and locations which prohibit flash. Headshot capability to separate subject from the background. Primarily prefer prime lens but needed the zoom capability. Normally shoot with a full frame and Crop sensor (Nikon DX) cameras. We are 100 % sure we will always have DX cameras so decided to buy dedicated professional lenses to give us close focal lengths to the full frames lenses so we bought Sigma 17-55 OS version and the Sigma 50-150 non OS to reduce weight. The Sigma 17-55 is a wonderfully sharpe and fast lens (we don't shoot sports) With OS on its great. No need to have it on all the time. Images are sharpe and clear with very accurate color in both JPEG and Raw (will need to tweak the raw if you use Lightroom or non Nikon software). We still use the white balance card and color checker passport in our workflow. Images are as good or slightly less than my primes but you get the zoom capability. Would recommend to any professional who has decided to stick with Crop Sensor cameras in your tool box. For pleasure shooting of landscapes etc it's great and can be used as all day walk around lens if you only wanted to take one lens. Enthusiast will see the quality of there pictures take a leap if they are already doing everything else right. This lens will take you to another level.
I'm a quickly-learning, very-interested amateur photographer. I shoot in low-light indoor conditions a lot, and I'm taking tons of pictures of my kids. Before I got this lens, I had a Canon 18-135mm f/3.5-5.6 but that wasn't nearly fast enough. I picked up a cheap Canon 50mm f/1.8 and it was fantastic as a fast lens for my situation. The only problem was that it didn't zoom, and it didn't allow me to take wider angle shots. There were SO many shots I just simply didn't get--group shots, whole-room shots, etc. The 50mm focal length is great for individual portraits of a single kid playing in the living room, but it's extremely limiting when there's more going on in the room that you want to capture. I had my eye on the Canon 18-55mm f/2.8, but that runs you around ... MoreI'm a quickly-learning, very-interested amateur photographer. I shoot in low-light indoor conditions a lot, and I'm taking tons of pictures of my kids. Before I got this lens, I had a Canon 18-135mm f/3.5-5.6 but that wasn't nearly fast enough. I picked up a cheap Canon 50mm f/1.8 and it was fantastic as a fast lens for my situation. The only problem was that it didn't zoom, and it didn't allow me to take wider angle shots. There were SO many shots I just simply didn't get--group shots, whole-room shots, etc. The 50mm focal length is great for individual portraits of a single kid playing in the living room, but it's extremely limiting when there's more going on in the room that you want to capture. I had my eye on the Canon 18-55mm f/2.8, but that runs you around $700. I couldn't bring myself to put down the money. Enter the Sigma 17-50mm f/2.8 that you're now looking at. The price point, even brand new from other sites, is around $300. It seemed like a deal that was too good to be true. The lens really does live up to every expectation, though. Sigma creates lenses that are durable with a very solid, high-quality look and feel. The photos are very clear and beautiful. And most important, the lens is both FAST and VERSATILE enough for my needs. I anticipate that I'll probably never swap this lens out in favor of either of my old lenses. If you're an amateur photographer like me, I highly recommend this lens. It will be a significant upgrade to your collection! For a more comprehensive review, check out The Digital Picture.
I'm using this lens an a Sony a6000 with LA-EA3 adapter. The lens will not auto-focus with this set-up, I would need the LA-EA2 or LA-EA4 to achieve that. It's a large system when put together, especially in comparison to the sony E-mount lenses I've been using. However, the build is fantastic and holding it feels very nice even on a small mirrorless system. The focus ring is very short, which allows me to MF quickly, but obtaining tack sharp images requires me to use the focus peaking and focus magnification tools in the camera. Since the ring is so short it's easy to miss focus by a small amount. When I do obtain focus I have taken some amazingly sharp photos. With the built in OS and the min. aperture of 2.8 I can hand hold the camera and take some great photos ... MoreI'm using this lens an a Sony a6000 with LA-EA3 adapter. The lens will not auto-focus with this set-up, I would need the LA-EA2 or LA-EA4 to achieve that. It's a large system when put together, especially in comparison to the sony E-mount lenses I've been using. However, the build is fantastic and holding it feels very nice even on a small mirrorless system. The focus ring is very short, which allows me to MF quickly, but obtaining tack sharp images requires me to use the focus peaking and focus magnification tools in the camera. Since the ring is so short it's easy to miss focus by a small amount. When I do obtain focus I have taken some amazingly sharp photos. With the built in OS and the min. aperture of 2.8 I can hand hold the camera and take some great photos in very poor lighting. I had read that the edges of this lens can be very soft between f/2.8-5.6 or even f/8, which I have noticed. I did take note of this and have been taking photos in the center of the frame and cropping to follow the rule of thirds if needed. With it's incredible sharpness in the center, wide aperture throughout the focal length and OS built in I have really enjoyed using this lens. Despite it's size factor on my sony a6000 and MF only I have started using this as my everyday workhorse. For the price I paid (under $300) I couldn't ask for more.
I have been through two Tamron 17-50 f/2.8s They both had the same problems staying connected to my camera's system They did not make good electrical contact and would shut down my camera in mid shooting....VERY BAD!I needed a 17-50 anyway. For me it is my all around go-to lens. So While I was in the market for a new lens anyway I decided to look at this Sigma 17-50mm f/2.8 EX DC OS HSM Auto Focus Wide Angle Zoom Lens. I had a really good experience shooting with an old Sigma 70-200 /3.5-5.6 many years ago and I remembered the glass in a Sigma Lens.As far as I'm concerned, The APO (Apochromatic) glass that Sigma has used forever in their lenses closely hedges up behind a Carl Ziess in quality. That is only my opinion, But I am sticking to it. With the Flourine ... MoreI have been through two Tamron 17-50 f/2.8s They both had the same problems staying connected to my camera's system They did not make good electrical contact and would shut down my camera in mid shooting....VERY BAD!I needed a 17-50 anyway. For me it is my all around go-to lens. So While I was in the market for a new lens anyway I decided to look at this Sigma 17-50mm f/2.8 EX DC OS HSM Auto Focus Wide Angle Zoom Lens. I had a really good experience shooting with an old Sigma 70-200 /3.5-5.6 many years ago and I remembered the glass in a Sigma Lens.As far as I'm concerned, The APO (Apochromatic) glass that Sigma has used forever in their lenses closely hedges up behind a Carl Ziess in quality. That is only my opinion, But I am sticking to it. With the Flourine coating added to the lens elements, Sigma has developed lenses that are crisper and tack sharp. Chromatic aberration is almost totally eliminated and lens flareing is less pronounced when it does happen . Sigma lenses stay crisp to the edge of the image.When my lenses arrived, I was a little chagrined ... Everything was jostling around inside the shipping box..When I opened the box there was only one strip of packing bubbles between the three boxes. I was getting worried..But when I opened the lens box I found a beautiful well padded and zipped lens carrying case. Very sturdy and rugged.The first thing I noticed was that this Sigma17-50 is nearly identical to the Tamron in lens barrel size and outside design. The only real difference is the distance scales are different, and the Sigma Lens diameter is 77mm vs. Tamron's 72mm. All the difference lies inside the bodies.Sigma's Hypersonic motor faster and quieter. And I already mentioned the glass.The best part of the whole deal was that I was able to purchase two premium quality Lenses; this Sigma 17-50mm f/2.8 EX DC OS HSM Auto Focus Wide Angle Zoom Lens along with the 70-200mm f/2.8 EX DC OS HSM Auto Focus Telephoto lens bundled with the 2x converter for less price than 1 Canon 70-200 f/2.8LUSM IS The only difference between the Sigma Lenses and Canon series L lenses (besides price) is that sigma isn't waterproofIt's all about the glass anyway.
This lens is equal in sharpness to my two 30mm and 50mm f1.4 prime lenses. At f2.8 the sharpness matches both primes stopped down to f2.8. Honestly its an amazing lens and the autofocus is great through the viewfinder and Live View (DPAF) on my 80D. And Servo AF works fine as well since some were saying they had problems. I think if your camera has DPAF, youll find that this lens is amazing on live view for photos and videos even with continuous auto focus. Must buy! Only issue i have is the focus ring moving with the AF but thats an issue literally everyone else has. Also, the lens has pretty strong focus breathing, fortunately though, when at the wide end, it breathes down to about 15mm at the closest focusing distance so you still get the full 17mm focal length ... MoreThis lens is equal in sharpness to my two 30mm and 50mm f1.4 prime lenses. At f2.8 the sharpness matches both primes stopped down to f2.8. Honestly its an amazing lens and the autofocus is great through the viewfinder and Live View (DPAF) on my 80D. And Servo AF works fine as well since some were saying they had problems. I think if your camera has DPAF, youll find that this lens is amazing on live view for photos and videos even with continuous auto focus. Must buy! Only issue i have is the focus ring moving with the AF but thats an issue literally everyone else has. Also, the lens has pretty strong focus breathing, fortunately though, when at the wide end, it breathes down to about 15mm at the closest focusing distance so you still get the full 17mm focal length when zoomed to infinity, so you arent losing any focal range, youre indeed gaining a few mm if focusing closer than infinity at the wide end of the zoom.
As others have mentioned I was sceptical of the potential quality at such relative low price for spec. Comparing to Canon equivalent at more than twice the cost I feared the lens would not cut it but gave it a punt. I am pleased I did!Lens performs superbly in all respects, colour, sharpness, contrast. Build is adequate and probably better than price would suggest with the exception of the desperately poor lens hood. Even engaged correctly the hood was lost on first 40 min walk and not found.At £30 RRP I wasn't prepared to incur this level of consumable running costs every time out. Like most I use hood for protection of lens from damage as well as flares from sunlight and not prepared to shoot without.I contact Sigma UK and expressed my concern. Fair play to ... MoreAs others have mentioned I was sceptical of the potential quality at such relative low price for spec. Comparing to Canon equivalent at more than twice the cost I feared the lens would not cut it but gave it a punt. I am pleased I did!Lens performs superbly in all respects, colour, sharpness, contrast. Build is adequate and probably better than price would suggest with the exception of the desperately poor lens hood. Even engaged correctly the hood was lost on first 40 min walk and not found.At £30 RRP I wasn't prepared to incur this level of consumable running costs every time out. Like most I use hood for protection of lens from damage as well as flares from sunlight and not prepared to shoot without.I contact Sigma UK and expressed my concern. Fair play to them they have posted me out a free replacement as a good will gesture. They suggested I will have likely not fitted correctly which I can assure anyone I did and have never lost a hood before. When replacement received I will look to modify the clip feature to increase retention somehow. It is well documented there are issues with this hood Sigma need to sort this.Shame about hood, otherwise a 5* lens for me, be careful with it and this is a no brainer for a top value std zoom.
I was originally skeptical of this lens, having owned older Sigma lenses with less than satisfactory results.The 17-50mm f/2.8 is a different story. This is a great general zoom that is reasonably sharp at f/2.8 given that it's ~1/3 the price of the Nikon 17-55mm f/2.8.I'm using it on a D7100, and the size and and weight excellent for a general carry around lens. While I've not fully put this lens through the paces, so far low light handling is excellent at both the 17mm and 50mm focal lengths. The optics are great, and are on par or better than my Nikkor 50mm f/1.4 prime. The optical stabilization indeed works incredibly well, I was able to hand hold a 1/15th shutter without much practice.One comment I will make, that I'm not sure if it's an issue or not yet, ... MoreI was originally skeptical of this lens, having owned older Sigma lenses with less than satisfactory results.The 17-50mm f/2.8 is a different story. This is a great general zoom that is reasonably sharp at f/2.8 given that it's ~1/3 the price of the Nikon 17-55mm f/2.8.I'm using it on a D7100, and the size and and weight excellent for a general carry around lens. While I've not fully put this lens through the paces, so far low light handling is excellent at both the 17mm and 50mm focal lengths. The optics are great, and are on par or better than my Nikkor 50mm f/1.4 prime. The optical stabilization indeed works incredibly well, I was able to hand hold a 1/15th shutter without much practice.One comment I will make, that I'm not sure if it's an issue or not yet, however the HSM motor "whines" if your fingers happen to be in the wrong spot while focusing. I think a little more practice with using this lens will train myself from having my fingers in the wrong spot. It's a shame this lens doesn't have a combined M/A setting which would prevent this all together.Another thing to be aware of, if you are predominantly a Nikon Zoom owner, the lens zoom and focus control is counter clockwise, as opposed to Nikon which is clockwise. This may be of concern for certain types of users that rely on muscle memory for their shots if all other lenses in your bag are Nikon.I could deduct half I star, it would be in regards to the lens' build quality. This lens does have metal couplings, which is greatly appreciated, however, the general 'feel' of the lens body, hood, and lens cap feels of cheap plastic. The hood being quite flimsy I think only enhances this cheap feeling - maybe a sturdier third party hood could be used to rid this uneasiness. This could be a deal breaker for the professional or semi-pro (combined with counter-clockwise zoom).
| Angle of View | 72.4° - 27.9° |
| Autofocus | Yes |
| Dimensions | Approx. 3.3 x 3.6" (8.38 x 9.14 cm) |
| Focal Length | 17 - 50 mm |
| Groups/Elements | 13/17 |
