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Archive 2010 · New Sigma 17-50mm f/2.8 EX DC OS HSM

  
 
rmackphoto
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p.1 #1 · New Sigma 17-50mm f/2.8 EX DC OS HSM


I just ordered one and will be posting my thoughts once I get it (tuesday).

Anyone used it yet? There is a review of the Canon version here: http://www.photozone.de/canon-eos/531-sigma1750f28os

I have owned a Tamron 17-50 2.8, but the AF speed and noise were disappointing. Hopefully the HSM motor will be an improvement.

Edited on Aug 15, 2010 at 03:51 PM · View previous versions



Aug 14, 2010 at 10:29 PM
misanthropic a
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p.1 #2 · New Sigma 17-50mm f/2.8 EX DC OS HSM


I think you meant:
http://www.photozone.de/canon-eos/531-sigma1750f28os
A very interesting lens, hopefully it works well and doesn't suffer from Sigma's sometimes problematic QC.



Aug 15, 2010 at 03:36 PM
rmackphoto
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p.1 #3 · New Sigma 17-50mm f/2.8 EX DC OS HSM


Wow, don't know how I screwed up that link. Yeah that's what I meant. I'll post some quick test shots, and if it's a dud I'll return it. Haven't seen many people talk about it yet.


Aug 15, 2010 at 03:51 PM
davidnholtjr
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p.1 #4 · New Sigma 17-50mm f/2.8 EX DC OS HSM


rmackphoto wrote:
Wow, don't know how I screwed up that link. Yeah that's what I meant. I'll post some quick test shots, and if it's a dud I'll return it. Haven't seen many people talk about it yet.



I think it's really new and thats why no one is talking about it.

Post some pics when you can. Would like to see them.



Aug 15, 2010 at 04:04 PM
dj dunzie
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p.1 #5 · New Sigma 17-50mm f/2.8 EX DC OS HSM


Looks like photozone thinks very highly of it. Keep us posted.

And for the record I've owned 6 Sigma lenses and 2 Tamrons and never had a QC issue with any, and yet I've returned 3 Nikkors for 2nd copies. Go figure.



Aug 15, 2010 at 04:09 PM
Jammy Straub
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p.1 #6 · New Sigma 17-50mm f/2.8 EX DC OS HSM


Interesting performance at the Photozone link. I wonder if the border/corner softness will be relevant in use, it seems very similar to the Tamron with VC. It's disappointing no one can touch the performance of the discontinued non VC Tamron at the borders except the Canon offering.


Aug 15, 2010 at 04:15 PM
rmackphoto
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p.1 #7 · New Sigma 17-50mm f/2.8 EX DC OS HSM


I don't think the corner sharpness will be too much of an issue unless you're doing landscapes wide open. At least that's what I'm hoping.
I noticed this lens actually tests quite a bit sharper than the Nikkor 17-55 although they tested that with a D200, so I'm sure that factors in.



Aug 15, 2010 at 04:24 PM
side1021
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p.1 #8 · New Sigma 17-50mm f/2.8 EX DC OS HSM


plz keep us posted! Nikon's 17-55 is bit too expensive for me, thus i'm hoping that this new sigma 17-50mm can be a good alternative.


Aug 16, 2010 at 12:14 AM
VTHokiEE06
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p.1 #9 · New Sigma 17-50mm f/2.8 EX DC OS HSM


I'm very interested in this also, keep us posted!


Aug 16, 2010 at 07:36 AM
firewireguy
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p.1 #10 · New Sigma 17-50mm f/2.8 EX DC OS HSM


If it had proper HSM full time manual override focusing like the 10-20 and every other EX Sigma I've had I would be a lot more interested in this lens.


Aug 16, 2010 at 09:20 AM
kusoiyaro
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p.1 #11 · New Sigma 17-50mm f/2.8 EX DC OS HSM


I am glad I waited on ordering the Tamron 17-50 VC. Please let me know how this compares to the tamron optically. I have a feeling I will end up picking up this lens simply because of the AF speed.


Aug 17, 2010 at 11:21 PM
rmackphoto
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p.1 #12 · New Sigma 17-50mm f/2.8 EX DC OS HSM


OK, some preliminary results: I am mostly happy with the lens. The AF is definitely faster and quieter than the Tamron 17-50. There is some CA as you can see in the full images at the bottom. As for sharpness, I'll let you guys decide on that.
Here are a few shots, all at 2.8 and 17 or 50mm, because that's where I usually shoot. pretty much every lens nowadays is good stopped down. Bicubic reduction in Photoshop, no sharpening:

17mm:
http://rmackphoto.com/sigma/bokeh.jpg

http://rmackphoto.com/sigma/flower2_17.jpg

http://rmackphoto.com/sigma/pot17.jpg

50mm:
http://rmackphoto.com/sigma/fire50.jpg

http://rmackphoto.com/sigma/flower.jpg

http://rmackphoto.com/sigma/rocks.jpg

http://rmackphoto.com/sigma/flower2_50.jpg

quick AF test:

http://rmackphoto.com/sigma/af1.jpg

http://rmackphoto.com/sigma/af2.jpg

http://rmackphoto.com/sigma/af3.jpg


And for you pixel peepers.. I am too lazy to do 100% crops of certain areas, etc. So these are full sized images straight out of a D300.

50mm:
@ 2.8
http://rmackphoto.com/sigma/50mm/2_8.JPG
@3.5
http://rmackphoto.com/sigma/50mm/3_5.JPG
@4.0
http://rmackphoto.com/sigma/50mm/4_0.JPG

Backyard, 17mm: I think CA is definitely a weak spot wide open. By f/4 it's good though.
2.8
http://rmackphoto.com/sigma/CA17mm/28.JPG
3.2
http://rmackphoto.com/sigma/CA17mm/32.JPG
3.5
http://rmackphoto.com/sigma/CA17mm/35.JPG
4.0
http://rmackphoto.com/sigma/CA17mm/4.JPG

17mm @ 2.8, showing distortion and vignetting.
http://rmackphoto.com/sigma/DSC_5814.JPG

50mm 2.8
http://rmackphoto.com/sigma/DSC_5827.JPG

http://rmackphoto.com/sigma/50mm/2_8.JPG





Aug 18, 2010 at 02:49 PM
Jammy Straub
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p.1 #13 · New Sigma 17-50mm f/2.8 EX DC OS HSM


Looks totally usable.

The boke character really gives it some 3D umph in the 1st fruit photo and the 1st dog photo.

Looks like it could use some sharpening and you just have to remember to stop down if you want sharp edges. The sharpness falloff on the garage door is rather extreme, all of the sudden it's just blurry. That could get you into trouble if you don't compose with that in mind.

Thanks for sharing! Enjoy your new lens! Post some people photos when you get a chance



Aug 18, 2010 at 03:20 PM
kusoiyaro
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p.1 #14 · New Sigma 17-50mm f/2.8 EX DC OS HSM


Thanks for the update! Looks like I will be picking up this lens very soon. Does anyone know if Sigma offers rebates and if they do, how often do they do it?


Aug 18, 2010 at 09:45 PM
rmackphoto
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p.1 #15 · New Sigma 17-50mm f/2.8 EX DC OS HSM


Well I've never owned a VR / OS lens, but is this typical? At 17mm the rear element is flush with the lens mount area.. but at 50mm it's retreated quite a ways into the lens, leaving a gap which exposes what I am assuming are the innards of the OS system.

http://rmackphoto.com/sigma/DSC_5976.jpg



Aug 19, 2010 at 12:05 PM
Jammy Straub
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p.1 #16 · New Sigma 17-50mm f/2.8 EX DC OS HSM


rmackphoto wrote:
Well I've never owned a VR / OS lens, but is this typical?


It's typical of this type of zoom lens, you can't see circuitry on all of them or anything like that, but rear elements do move. Something in there has to move as you zoom about!



Aug 19, 2010 at 12:13 PM
VTHokiEE06
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p.1 #17 · New Sigma 17-50mm f/2.8 EX DC OS HSM


I don't recall seeing that on the 2 VR lenses I own, guess one should remove the lens at 17mm . This lens looks good, I think I may give it a try also. I really would like to speed up the old 18-55mm VR.

Does the focus ring turning during AF bother you at all or affect the handling?



Aug 19, 2010 at 12:15 PM
rmackphoto
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p.1 #18 · New Sigma 17-50mm f/2.8 EX DC OS HSM


VTHokiEE06 wrote:
Does the focus ring turning during AF bother you at all or affect the handling?

Not really. The lens is not that big, and doesn't require much support. Most of the time I'm barely touching it. I do wish it didn't move though, and had full time MF over-ride. Oh well, it's easy enough to flip the switch.



Aug 19, 2010 at 12:24 PM
absolutic
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p.1 #19 · New Sigma 17-50mm f/2.8 EX DC OS HSM


Sigma HSM are always faster than Tamron, and Tamron 17-50 just in general is slow autofocus lens.


Aug 20, 2010 at 01:32 AM
rmackphoto
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p.1 #20 · New Sigma 17-50mm f/2.8 EX DC OS HSM


Well, some disappointing news. The AF simply stops working once in a while, and the lens needs to be re-seated for it to work again. The lens hood was also so loose it would fall off sometimes. I'm returning it to Amazon, and haven't decided whether I will buy another or look for something else. I really hoped this would be my new every-day lens..


Aug 22, 2010 at 06:36 PM
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