Canon EOS 350D with Carl Zeiss Sonnar T* 2.8/135mm

Veijo Vilva

(Page under Construction)

FOV corresponds to a 215mm lens on a 35mm camera
very sharp at f/5.6, somewhat softer at f/2.8

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 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, 2.6Mb)
A crop from the edge at f/5.6:

A crop from the edge at f/2.8:

(Full-size, 2.2Mb)

Test Photos at Full Aperture (f/2.8)
Note: All shots hand-held
Note: the crops have been converted from unsharpened raw files

A 100% Crop:

Levels adjusted, local contrast enhanced (Full-size original, 1.1Mb)

A 100% Crop:

A 100% Crop:

A 100% Crop:

Canon EOS 350D with Carl Zeiss Sonnar T* 2.8/135mm

Veijo Vilva

A NOTE CONCERNING THE BOOKSHELF TEST PHOTOS

Test Photos at Full Aperture (f/2.8)

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