Good day.

I've tested Fujinon SF 250mm lens and if anyone is interested.

Conditions:
Lens was fixed at Wisner Technical Field 5x7

At the back of the camera I set Nikon D2Xs (half frame 12mPx DSLR)

In front of Wisner was set mannequin called Frosya :-)

Distance between Frosya and lens was 9 ft.



There are apertures from 5,6 to 22 marked at the lens, but You can close it up to f90, so what I have done )

Now You can see actual pixels crop 300x300 of Frosyas eye at different apertures.



without disk
http://o0.imgsrc.ru/b/babavaga/6/13361656jAi.jpg

with red disk
http://o0.imgsrc.ru/b/babavaga/7/13361657aYA.jpg

Unfortunatelly I do no have Yellow disk yet.

I hope it was interesting to look throught.