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Thread started 28 Feb 2006 (Tuesday) 02:28
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Canon EF 70-200mm f/4L USM

 
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Aug 03, 2010 18:19 |  #2866

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V-Wiz
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Aug 03, 2010 23:44 |  #2867

Still looking for an answer please .What aperture is the "sweet Spot" for this lens, The sharpest/best IQ.


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kissel
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Aug 04, 2010 00:28 |  #2868

V-Wiz wrote in post #10658147 (external link)
Still looking for an answer please .What aperture is the "sweet Spot" for this lens, The sharpest/best IQ.

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Roy ­ Mathers
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Aug 04, 2010 04:49 |  #2869

I'm a little confused by these charts - how can a 70-200mm lens be tested at 280mm?




  
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misty66
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Aug 04, 2010 05:02 |  #2870

Roy Mathers wrote in post #10659116 (external link)
I'm a little confused by these charts - how can a 70-200mm lens be tested at 280mm?

Using a 1.4 extender maybe..?!


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Roy ­ Mathers
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Aug 04, 2010 05:08 |  #2871

I thought that, but then it wouldn't be a test only of the lens would it?




  
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Aug 04, 2010 05:16 as a reply to  @ Roy Mathers's post |  #2872

the sweet spot is wide open..:D


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Aug 04, 2010 05:54 |  #2873

David83 wrote in post #10659169 (external link)
the sweet spot is wide open..:D

I second this motion.


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Aug 04, 2010 07:41 as a reply to  @ post 10563057 |  #2874

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Aug 04, 2010 09:44 as a reply to  @ tschzay's post |  #2875

wide open :D

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Aug 04, 2010 10:50 |  #2876

Thanks for the chart but i dont know how to read this, what do these mean. :o

kissel wrote in post #10658426 (external link)
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Gripped 5D Mark II l 24-105 F/4 L l 70-200 F/4 L l Tokina 12-24 F4 l 50mm 1.8 l Sigma 600 Mirror l B+W KSM CPL l B+W 6stop ND filter l Hitech 0.6 GND l YN-468 Flash l Kenko Pro 300 1.4 TC l Induro Tripod, Vanguard 250 Ballhead.

  
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Aug 04, 2010 13:11 |  #2877

basically the more the better, so according to the chart, 5.6. Although I usually shoot mine at f/4 and it rivals my 100mm f/2


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V-Wiz
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Aug 04, 2010 13:41 |  #2878

I see, okay thanks.


Gripped 5D Mark II l 24-105 F/4 L l 70-200 F/4 L l Tokina 12-24 F4 l 50mm 1.8 l Sigma 600 Mirror l B+W KSM CPL l B+W 6stop ND filter l Hitech 0.6 GND l YN-468 Flash l Kenko Pro 300 1.4 TC l Induro Tripod, Vanguard 250 Ballhead.

  
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In2Photos
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Aug 04, 2010 13:44 as a reply to  @ V-Wiz's post |  #2879

V-Wiz wrote in post #10658147 (external link)
Still looking for an answer please .What aperture is the "sweet Spot" for this lens, The sharpest/best IQ.

Why does it matter? Choose your aperture based on the DOF and or shutter speed you are after. This lens works just fine at all apertures.


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Madweasel
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Aug 04, 2010 13:46 |  #2880

The fact that all the columns are about the same height backs my own experience that "sweet spot" doesn't really apply to this lens - it is equally good across all settings.


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Canon EF 70-200mm f/4L USM
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