F
FarQinell
Guest
Could you not make do with the slightly smaller image size given by the Canon 300/2.8 IS version 1?
Arguably one of the sharpest lenses Canon ever made.
Very sharp wide open with huge 107mm nominal aperture.
Resolving power is proportional to aperture (there are other things to consider of course - before anybody chips in!).
For the 400/4 DO you have to stop down to f5.6 to get half decent results from what I have read.
400/5.6 equates to only 71mm aperture - so less detail in your image. In fact the little 400/5.6 prime performs just as well as the DO and is much much cheaper.
With the 300/2.8 you get a very good 420mm with a 1.4TC.
The only thing going for the 400/4 DO is its relatively light weight.
Plenty of 300/2.8 version 1 coming on the market as rich folk trade up to version 2!
Arguably one of the sharpest lenses Canon ever made.
Very sharp wide open with huge 107mm nominal aperture.
Resolving power is proportional to aperture (there are other things to consider of course - before anybody chips in!).
For the 400/4 DO you have to stop down to f5.6 to get half decent results from what I have read.
400/5.6 equates to only 71mm aperture - so less detail in your image. In fact the little 400/5.6 prime performs just as well as the DO and is much much cheaper.
With the 300/2.8 you get a very good 420mm with a 1.4TC.
The only thing going for the 400/4 DO is its relatively light weight.
Plenty of 300/2.8 version 1 coming on the market as rich folk trade up to version 2!
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