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This seems closely related to How does a lens affect the saturation of a picture?.

Some older lenses I've seen contain the word "Color" in the name, such as Color-Yashinon and Color-Skopar (the latter is still made by Cosina Voigtländer). Does this mean the lens is optimized for color film? Can a lens that produces good results with black-and-white film exhibit poor performance when used with color film?

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Not what you asked for, but as a free bonus: The term "Apochromat" or "APO" indicates a lens that is particularly well color-corrected. You don't see it often these days, but Cosina Voigtländer has at least one. Just in case you wondered :) And I might also point out that some older lenses gave a rather nasty overall color cast to the image, not particularly relevant for b&w film but obvious with colour film. I'd certainly expect a lens with "Color" in its name to be free of this defect. –  Staale S Jul 11 '12 at 21:19

3 Answers 3

up vote 7 down vote accepted

I have a feeling that the "Color" portion of the name is simply marketing, as the lenses in question were released at a time when color film was not as common.

If there were any technical differences, they would probably be focused on reducing chromatic aberration (CA). Reducing CA is done by modifying the lens design and/or materials so that different color wavelengths all have the same focal point. While this is beneficial for black and white photography as well, because it increases the sharpness, it is not a cheap problem to fix. However, since the fringing effects are more noticeable for color photography, the extra cost would be more easily justified.

The following is an example of the difference of chromatic aberration for b/w vs color:

Converted to black and white

Purple fringing

The first (while not a fantastic image) is decent, while the color version has clear flaws.

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This best answers the question, though I ended up upvoting all of the answers. :P –  DragonLord Jul 11 '12 at 16:53

The word "Color" in the name does indeed refer to color film. In the case of Yashinon, it does not necessarily mean it is "optimized" for color film, simply that it is capable of being used with color film. The lens is also fully capable of producing black and white photographs as well. At the time, in the 1960's and early 1970's, Yashica cameras were more widely used for black and white photography, so explicitly calling out viable color film compatibility was kind of a big deal.

It wasn't until the 1970's that color film really came into common use, and COLOR-Yashinon lenses started appearing before that time. It seems one of the more popular Yashinon lenses was the COLOR-Yashinon DX 1:1.7 f=45mm lens, commonly paired with the 1973 Yashica Electro 35 GSN.

I don't have a lot of information at hand for the Color-Skopar, and there seem to be "classic" as well as modern lenses that bear that name but are not related to one another outside of the reuse of the name in a modern Leica lens design. I gather, however, that the classic versions came out of the 1950's (an even earlier era for color consumer film), and I assume the purpose of the word Color was the same as in Yashinon lenses.

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Although jrista answers the question in a basic way, he does not explain WHY a lens may be optimised for colour.

As far as I'm aware any given lens will produce an 'adequate' image on both colour and B&W film, as its the same focusing plane and film area, however chromatic aberration is far more prominent in colour (its very hard to spot in B&W, and appears as a mild blur)

Therefore a colour optimised lens will have a more correction-based design, hence the marking.

(I have not seen a modern 'colour' marked lens so must assume all are to some degree colour optimised now)

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