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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 02 Apr 2008 (Wednesday) 18:30
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Sharpness of lenses???

 
rennwerkes
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Apr 02, 2008 18:30 |  #1

I know this is a totally newbie question but it's driving me nuts!:cry:
I've got a 16-35 2.8 L lens that just doesn't look as sharp as I'd like it to be at 2.8.
Are wide angle lenses typically "soft" compared to say a 24-70 wide open?
I've got a 17-35 2.8 L that's giving me similar results. Or am I just unlucky to have two lenses in need of adjustment?
Thanks!:D




  
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ooo
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Apr 02, 2008 18:30 |  #2

Post pictures =D


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rennwerkes
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Apr 02, 2008 18:36 |  #3

ooo wrote in post #5247721 (external link)
Post pictures =D

Sorry, I'm picture posting handicapped!:cry:




  
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philthejuggler
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Apr 02, 2008 18:38 |  #4

Although pictures I take on my 17-40 L look good on screen, they never impress pixel-peeping to the same degree that longer lenses do.


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TheHoff
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Apr 02, 2008 18:39 |  #5

Is the 16 zoom the mark II version? If not, both of those are a bit older and not as sharp as the latest one... but it is still a very nice lens. I remember envying my friend's 20-35 in school, which is older than those.

And yes, the wider you go, the softer a lens will be wide open (generally speaking -- it is easier to build normals and telephotos to be sharp).


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ooo
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Apr 02, 2008 19:30 |  #6

Here are the OP's shots.


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rennwerkes
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Apr 02, 2008 20:58 |  #7

TheHoff wrote in post #5247782 (external link)
Is the 16 zoom the mark II version? If not, both of those are a bit older and not as sharp as the latest one... but it is still a very nice lens. I remember envying my friend's 20-35 in school, which is older than those.

And yes, the wider you go, the softer a lens will be wide open (generally speaking -- it is easier to build normals and telephotos to be sharp).

No, the 16-35 is the Mk I version.




  
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Apr 02, 2008 21:12 as a reply to  @ rennwerkes's post |  #8

If you have filters over your lenses take them off and reshoot to see how sharp they are.


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timnosenzo
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Apr 02, 2008 21:14 |  #9

So in the pictures above, what did you focus on? It looks like you're using a polarizer (looking at the vignetting at the edges).... is it a high quality polarizer or something generic? Any other filters on the lens?


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rennwerkes
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Apr 02, 2008 21:15 as a reply to  @ timnosenzo's post |  #10

Nope, no polarizer, only a Heliopan UV on it.




  
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rennwerkes
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Apr 02, 2008 21:16 |  #11

timnosenzo wrote in post #5248631 (external link)
So in the pictures above, what did you focus on? It looks like you're using a polarizer (looking at the vignetting at the edges).... is it a high quality polarizer or something generic? Any other filters on the lens?

Focus was on the blue windows.




  
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Sharpness of lenses???
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