200-400 VR does not equal prime lens sharpness?

Started Nov 2, 2006 | Discussions thread
wilkman Senior Member • Posts: 1,872
Test picts

Maybe this will help...

First shot is the entire frame just so we know what we are looking at ... box on a pool table with a dollar bill stuck to it, about 25 ft from camera. The 40 inch mark is the plane of focus .... IMO, 'sharpness tests' are absolutely 100% worthless unless you verify the plane of focus ...

The second and third shots are 100% crops from the 200-400 at f4, and then the 300VR at f4.

Tripod, mlu, manual exposure the same, normal sharpening, no post, resize only, camera square to target, etc. As laboratory as I can make it short of verifying 300mm on the zoom is actually 300mm.

entire frame

100% crop, 200-400 @ f4

100% crop 300VR @f4

IMO, the 300 shot wins by a little ... in real world usage I'll say it over and over, whichever one was lucky enough to nail focus on any particular shot, that one will look the best.

later, mark

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