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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 12 Dec 2016 (Monday) 17:20
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Canon 70D + Canon 17-55 2.8 - How is it wide open?

 
HeWithNoLightWithin
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Dec 12, 2016 17:20 |  #1

Hi All

New guy here, about to make the jump back to Canon from a Panasonic M4/3 system ( for various reasons!).

I'm definitely going for a 70D which for my uses (general family stuff, Urbex, newborn portraiture, and some non professional video) seems like an excellent body and it is within my budget. To accompany this I will am contemplating getting the Canon 17-55 2.8, but I have heard some reports of softness at 2.8 ( which is where a lot of my shooting generally is). Does anyone here have this lens, and even better would be if anyone was using it on a 70D? How does it hold up at 2.8?

I realise that some of the non Canon equivalents may be technically as sharp or sharper, but over the years I've had many issues with 'bad' 3rd party lenses ( focus issues, soft sides, etc) and have often gone through many copies to find one that performs as it should. On the contrary any Canon lens I have shot with has performed as it should and also has that 'Canon look' that is often missing from other brands, so this time I'm hoping to go straight for the Canon even if it's a little more expensive. But before I pull the trigger I would love to hear feedback from you wonderful people :)




  
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trailblazer
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Dec 12, 2016 17:23 |  #2

I used a 17-55 paired with a 7d for 6 years. Great combination. I found my copy was very sharp at 2.8, especially after micro adjustment.




  
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Wilt
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Post edited over 2 years ago by Wilt. (2 edits in all)
     
Dec 12, 2016 17:24 |  #3

http://www.photozone.d​e …s/425-canon_1755_28is_50d (external link)

"The resolution figures are among the very best for an APS-C standard zoom lens. The center resolution is generally excellent even on the EOS 50D and the borders can keep a very good quality level. "

The MTF at f/2.8 are nearly as high as they are at f/4, and generally about the same as f/5.6...hardly an indication of softness


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nqjudo
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Dec 12, 2016 18:15 |  #4

Used the 17-55 for a long time. No issue wide open. Very sharp.


No photographer is as good as the simplest camera. - Edward Steichen.

  
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JeffreyG
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Dec 12, 2016 18:55 |  #5

It's been a long time since I used a 17-55, but I did own one for a couple years (2007-2008 I think) and sharpness was never a concern for me. The lens is sharp and has very fast focus. AF accuracy is good and very much on par with the best lenses of that era.

I did have one somewhat minor complaint about the 17-55, and that is that the lens is a bit more prone to veiling flare than most zooms in the same range. This isn't something that shows up all that often, but if you shoot a lot of sunsets etc. with a strong light source in the scene you might run into it.


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mikepj
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Post edited over 2 years ago by mikepj.
     
Dec 12, 2016 22:48 |  #6

Like others have said, the 17-55 is very sharp. Sharper than the 24-70 v1 (which was current back in the day), and sharper than the 24-105mm L, even when comparing f2.8 on the 17-55 and f4 on the 24-105. The current 24-70 f2.8 v2 is sharper, but at a cost.

Stopping down to f4 will definitely give you a little more sharpness, but I never hesitated to shoot my 17-55 at f2.8. Such a sweet lens. The only drawback is the build quality isn't quite that of an L lens. That being said, I never had any problems with mine for the few years I had it.


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trailblazer
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Dec 13, 2016 16:04 |  #7

Op, buy with confidence. It's a great lens and sharp at 2.8




  
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Canon 70D + Canon 17-55 2.8 - How is it wide open?
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