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jmeyer

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AlanF

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At last a small bird I could take with the 400 DO II + 2xTC on the 5D IV. The starlings are active and I caught this one while cycling back from the lab this afternoon.

Someone posted that you need 30% of the frame to get a sharp photo. The starling in this crop occupies 866x1566 pixels, 4.5% of the total area.
 

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AlanF

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Jack Douglas said:
Alan, how do you think this fared compared to the 5DSR?

Jack

The 5DS R gives ~30% more linear resolution than the 5D IV. The 400mm DO + 1.4xTC on the 5DS R is very similar to the 400 + 2xTC on the 5D IV. Both are noticeably sharper and less noisy than 560mm on the 7D II. 800mm on the 5DS R gives the best resolution of all. The advantage of the 5D IV should be in BIF. So, far I have been hardly able to test the 5D IV, but the preliminary evidence looks good.
 
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tron

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AlanF said:
Jack Douglas said:
Alan, how do you think this fared compared to the 5DSR?

Jack

The 5DS R gives ~30% more linear resolution than the 5D IV. The 400mm DO + 1.4xTC on the 5DS R is very similar to the 400 + 2xTC on the 5D IV. Both are noticeably sharper and less noisy than 560mm on the 7D II. 800mm on the 5DS R gives the best resolution of all. The advantage of the 5D IV should be in BIF. So, far I have been hardly able to test the 5D IV, but the preliminary evidence looks good.
Alan, in another thread you had said that: 400mm DO II + 1.4xTC 5DS R is similar to 400mm DO II + 2xTC on 5DS R. It seems a little contradictory...
Now as far as: "Both are noticeably sharper and less noisy than 560mm on the 7D II. " I guess I will have to send you the bill eventually ;D
 
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AlanF

Desperately seeking birds
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Aug 16, 2012
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tron said:
AlanF said:
Jack Douglas said:
Alan, how do you think this fared compared to the 5DSR?

Jack

The 5DS R gives ~30% more linear resolution than the 5D IV. The 400mm DO + 1.4xTC on the 5DS R is very similar to the 400 + 2xTC on the 5D IV. Both are noticeably sharper and less noisy than 560mm on the 7D II. 800mm on the 5DS R gives the best resolution of all. The advantage of the 5D IV should be in BIF. So, far I have been hardly able to test the 5D IV, but the preliminary evidence looks good.
Alan, in another thread you had said that: 400mm DO II + 1.4xTC 5DS R is similar to 400mm DO II + 2xTC on 5DS R. It seems a little contradictory...
Now as far as: "Both are noticeably sharper and less noisy than 560mm on the 7D II. " I guess I will have to send you the bill eventually ;D

Under ideal conditions 800mm on the 5DS R does give the highest resolution. But, in practice for most of the time 560mm on the 5DS R gives better results.
 
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tron

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Nov 8, 2011
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AlanF said:
tron said:
AlanF said:
Jack Douglas said:
Alan, how do you think this fared compared to the 5DSR?

Jack

The 5DS R gives ~30% more linear resolution than the 5D IV. The 400mm DO + 1.4xTC on the 5DS R is very similar to the 400 + 2xTC on the 5D IV. Both are noticeably sharper and less noisy than 560mm on the 7D II. 800mm on the 5DS R gives the best resolution of all. The advantage of the 5D IV should be in BIF. So, far I have been hardly able to test the 5D IV, but the preliminary evidence looks good.
Alan, in another thread you had said that: 400mm DO II + 1.4xTC 5DS R is similar to 400mm DO II + 2xTC on 5DS R. It seems a little contradictory...
Now as far as: "Both are noticeably sharper and less noisy than 560mm on the 7D II. " I guess I will have to send you the bill eventually ;D

Under ideal conditions 800mm on the 5DS R does give the highest resolution. But, in practice for most of the time 560mm on the 5DS R gives better results.
Thanks :)
 
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