Canon EOS 350D with Super-Multi-Coated Takumar 3.5/135mm

Veijo Vilva

(Page under Construction)

FOV corresponds to a 215mm lens on a 35mm camera

a very sharp lens
very good multicoating
very high quality, all metal construction
very smooth focusing

the lens is mounted with an M42-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!

Who Would Complain About the Sharpness? (Full-Size High Quality JPEG, 2.7Mb)
ISO400, f/5.6, 0.3s. Raw image converted with dcraw (Auto White Balance).
A 100% crop from near the upper right corner:

Test Photos at f/3.5
Note: All shots hand-held

(compare with a photo taken with a Schneider-Kreuznach Radionar 4.5/105)
The bokeh isn't quite as nice probably due to over-correction of the lens.
The here rather faintly visible colour aberrations can get rather nasty.

(A full size copy)

(compare with a photo taken with a Schneider-Kreuznach Radionar 4.5/105)

(compare with a photo taken with a Schneider-Kreuznach Radionar 4.5/105)
A 100% crop from the above photo:

(compare with a corresponding crop from the Schneider-Kreuznach Radionar photo.
This crop looks worse because of the shallower DOF, unfavourable bokeh effects,
and the purple and green aberrations completely missing in the Radionar crop.)

A 100% crop displaying the rather bad bokeh of an over-corrected lens

Canon EOS 350D with Super-Multi-Coated Takumar 3.5/135mm

Veijo Vilva

A NOTE CONCERNING THE BOOKSHELF TEST PHOTOS

Test Photos at f/3.5

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