Minolta MC 28mm f/2.5 Yellowing

I just finished shooting a roll of HP5 in a Minolta SR-T 102 using my Minolta MC 28mm f/2.5 lens; first time I've used this lens in years. I noticed that the image through the viewfinder appeared to be somewhat "yellow." I've since learned on the internet that some MC Minolta lenses including the 28mm f/2.5 have a "problem" with yellowing due to the composition of one of the elements, the second from the front I believe. Remedies appear to include exposing the lens to sunlight for a period of time. However, no mention online (at least that I could find) on the effect of this yellowing on film. I would assume that color film might be adversely affected, particularly slide film, but I wonder about the impact on B&W. I suppose I'll find out when I process the film, but I'm wondering what other users might have experienced with this lens particularly with B&W film. Thanks for inputs/comments.

Haven't had any Rokkors to "yellow" but a Pentax 50mm f 1.4 Takumar that someone gave me has yellowed enough to be noticeable and I've used it with black & white. To my eye it seems to have like a pale yellow filter (much less effect than the common K2 yellow).

I personally tried various versions of the sunlight/UV exposure and nothing made any difference that I could see.

 

There used to be a "repair" page for the yellowed Takumars by Brian Ayling, but that is no longer available that I can find.

He used a sledge hammer to "repair" the lens....

I haven't had a Minolta lens go yellow, but I've had others that did. Exposure to sunlight helps, but isn't a miracle cure, It lightened the yellowing of my lenses, but didn't completely clear them.

 

You raise an interesting point, regarding B&W. I wonder if the yellowing has the same, though probably milder, effect as a yellow filter.

I personally tried various versions of the sunlight/UV exposure and nothing made any difference that I could see.

 

There used to be a "repair" page for the yellowed Takumars by Brian Ayling, but that is no longer available that I can find.

He used a sledge hammer to "repair" the lens....

Lol! :D

By the bye, in today's world, the color cast from the thorium or whatever can be corrected easily in scanned color work, and --of course-- it doensn't really do anything "bad" in B&W.