Canon EOS 350D with Carl Zeiss Planar T* 1.7/50mm

Veijo Vilva

(Page under Construction)

FOV corresponds to a 80mm lens on a 35mm camera
very sharp at f/5.6, slightly softer at the edges at f/1.7

the lens is mounted with an Contax/Yashica Bayonet-to-EOS adapter
manual focus
AV (aperture priority) or M (manual)

A NOTE CONCERNING THE BOOKSHELF TEST PHOTOS

my test procedure isn't very rigorous
bad results may be caused by bad focusing as manual focusing in dim lighting isn't any too easy when the DOF for this level of expected sharpness is just a few millimeters in either direction
the backs of the books aren't at exactly the same depth, the maximum difference is about one inch. Only a few books at the center and at the upper right-hand corner have been aligned - roughly.
the test only shows that the specific tested lens is at least as good as my results -- even that individual lens might be better, and others of the same make and model may be better or worse
anyhow, the equivalent magnification of the 100% crops is just plain sick, i.e. about 48x on a typical 17", 1024x768 CRT. Normally, 8x has been considered a reasonable maximum for critical sharpness from film. At 48x magnification, a 35mm film frame would be about 172cm (68") wide, and even a 1.6x crop factor dSLR frame would be 107cm (42") wide!

At f/5.6:

At f/5.6 everything is quite sharp, even at the edges. (Full-size)
A crop from the center at f/5.6:

A crop from the edge at f/5.6:

A center crop at full aperture (f/1.7):

At f/1.7 the result is sharp in the center, slightly softer at the edges.
A crop from the edge at f/1.7:

At f/4
Note: All shots hand-held

Canon EOS 350D with Carl Zeiss Planar T* 1.7/50mm

Veijo Vilva

A NOTE CONCERNING THE BOOKSHELF TEST PHOTOS

At f/4

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