Sven asked about his S-M-C Takumar 35/2.0 producing a yellow color tint on the *istD.
I've got a Super Tak 35/2.0 (model 2) with the same problem. Apparently it is pretty common for the glass in that lens to go yellow with age in the S/T and S-M-C versions. J.C. O'Connell suggested that the cure is to expose it to ultraviolet light which will clear the yellowing. I put mine under a blacklight at about 4" range for the life of the blacklight bulb (several weeks) and that DID help. The sun, of course, puts out pretty strong UV light so if you've got a sunny window that might be faster. J.C. also says that the older Super Takumar 35/2.0 (67mm filter version, much bigger lens) doesn't get this problem, and indeed my copy of this older 35 does not. I also find the older lens a bit sharper at the corners too, at the expense of no SMC and a lens the size of an 85/1.8. Thanks to J.C. for his advice! It is almost certainly NOT the *istD and would show up on film too. You might be able to compensate on film by putting a "cooling" light blue color correction on film. You should be able to compensate with the *istD by setting the color balance to something like "incandenscent" (something lower than 5500 K anyway) so that it expects the yellow shift that the lens produces. Photoshop might be able to compensate too--I've got my curves automated to the point where I don't have to color balance much anymore. DJE
