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FORUMS Canon Cameras, Lenses & Accessories Canon Lenses 
Thread started 22 Dec 2008 (Monday) 23:57
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soft 17-40mm F4L lens?

 
AlanU
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Dec 23, 2008 11:20 |  #16

I just recently purchased the 17-40L and its a gem for the price. On my XTI the lens performs just aswell as my Sigma 18-50EX except the sigma is f/2.8. The sharpness wideopen is absolutely amazing for a zoom IMO. On the 5d its an ultra wide lens (reason for purchasing) and it give a "fun" fisheye look at 17mm -2xmm due to barrel distortion.

When I first put my new lens on my XTI at the camera store I tested it wideopen hand held in real life walkaround useage. The eyelash detail when photographing my 2yr old daughter was very impressive. What impressed me the most was the colour/contrast of the photos straight out of the camera. Stopping my copy to f/4.5 the sharpness increased dramatically which is already extremely impressive at f/4.


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jtfoto
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Dec 23, 2008 17:04 as a reply to  @ AlanU's post |  #17

I have had a 17-40 for quite a number of years and rarely use it.
There is no getting away from the fact that my copy IS just SOFT.
It is soft throughout the entire range. I have compared it to 2 other copies - they were fine.

It does not appear to miss-focus in any way it is just has a hazy softness to it right through the entire zoom range.
About to send back to Canon and see if they can help.
And before anybody comments, it has been tried on 10D, 2x30D's, 1D11n and a 5D.


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Canon 50 f1.8, Canon 17-40 f4 L, 70-200 f2.8 L IS,300 f4 L IS, 24-105L IS, 16-35 f2.8L, Extender EF 1.4, 3 x EX 58011's plus heaps of odds and ends
www.pro-imagephotography.com.a​u (external link)

  
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Mike55
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Dec 23, 2008 18:01 |  #18

perryge wrote in post #6932073 (external link)
The 17-40L is known for being a lot sharper at 17mm than at 40mm. This is consistent with my copy, which I'm really happy with. At 17mm, it's frighteningly sharp - it gives my 200L a run for its money, which is INSANE. At 40mm, it's good, but certainly nowhere near as impressive as it is at 17mm.

Yup. Prime-like at 17mm.


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sapearl
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Dec 23, 2008 18:37 |  #19

If it's been such a problem on so many different bodies over a period of years, why haven't you sent it back sooner? Hopefully they'll make some sort of adjustment at no charge, but the fact that you've held it so long may weaken your case.

jtfoto wrote in post #6934815 (external link)
I have had a 17-40 for quite a number of years and rarely use it.
There is no getting away from the fact that my copy IS just SOFT.
It is soft throughout the entire range........About to send back to Canon and see if they can help........it has been tried on 10D, 2x30D's, 1D11n and a 5D.


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Denton
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Dec 23, 2008 20:53 |  #20

Did some testing this morning....apparently had the camera set wrong for some reason.
The lens seems to be only very very slightly softer than my 24mm f2.8 prime lens...which I think is acceptable. Stopped down to about 5.6 and the difference is negligable.
I will know more in a couple of weeks....wife gave me to go ahead to get a 5D...so get to do a little online shopping. Was also looking at the 5D mark 2, but those are too pricey for my blood.




  
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sapearl
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Dec 23, 2008 21:50 |  #21

Overexposure? Underexposure? Congrats on the go-ahead for the 5D purchase..... marvelous little machine :D.

Denton wrote in post #6935986 (external link)
Did some testing this morning....apparently had the camera set wrong for some reason........


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sgamuk
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Dec 23, 2008 23:18 |  #22

pics??? where's the sample?


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kolok
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Dec 27, 2008 10:08 |  #23

I had a couple of softies before finally got a nice sharp one on the third try. Guys at the cam shop agreed that it was a bit too soft for their liking as well and were very accommodating in getting a sharper one. Nevertheless, with a little photoshop the images (even on a softer lens) sharpen up very nicely!


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Denton
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Dec 30, 2008 12:07 as a reply to  @ sapearl's post |  #24

Got my 5D...super nice camera and I am happy! The 17-40 F4L lens is fairly sharp stopped down and compared to my 24mm f2.8 prime lens indicates very little difference in color and sharpness. Thanks to all that replied.




  
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sapearl
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Dec 30, 2008 12:12 |  #25

Glad to hear it worked out for you Denton - we like success stories and happy shooters :D. I feel the same way about my combo.

Denton wrote in post #6970308 (external link)
Got my 5D...super nice camera and I am happy! The 17-40 F4L lens is fairly sharp stopped down and compared to my 24mm f2.8 prime lens indicates very little difference in color and sharpness. Thanks to all that replied.


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soft 17-40mm F4L lens?
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