How does slide film work without a mask?

AgX · Oct 5, 2022

Steven Lee said:
This is an extremely strange and narrow definition of a common phenomena. Color crossover simply means colors casts in certain luminosity range (highlights, mids, shadows, etc).

I understand "crossover" that there is wrong colour reproduction at two(!) locations, shadows and lights.
Otherwise that term crossover would make no sense!

And that this strict wording is understood literally by us Europeans you can see here:

Color crossover - an illustration

IMO elimination of all crossover merely produces a technically perfect result like billions of others that could have been taken with any half decent phone. In my view it is preferable that pictures taken on film should not look like digital. Alan this is not meant as a "smarty pants" question...

www.photrio.com

To put you at ease: in Germany we do not even use the term crossover as generic term as you, but a german term that is less strict and indeed also includes a single-side deviation.

So you English speakers might reconsider your terminology... to avoid arguing...

koraks · Oct 5, 2022

Steven Lee said:
This is an extremely strange and narrow definition of a common phenomena.

As a definition it's actually a rather good one. As a causal analysis, it's evidently not really complete as it doesn't explore any causes of the phenomenon.

Steven Lee said:
"choking and preventing the flow of oxygen by applying pressure to the neck are not the same thing!" Yes indeed they are.

No, they are NOT the same thing. The latter causes the former. They're still conceptually distinct.

Things get really, really muddy once you start mixing up concepts and causal relationships.

pentaxuser · Oct 5, 2022

RPC said:
To summarize and hopefully clarify some of what has been said, and to add some...

The dyes in slide film, color negative film, and color print materials all have impurity problems.

Slides are meant to be projected or viewed directly, while color negatives are meant to be printed.

When a slide is viewed, you are only seeing dyes used once, and the impurities do not show significantly, and reasonable quality results. But with a printed color negative, dyes are effectively seen twice because the print material has dyes as well, and the dye impurity problem would compound, and degraded color would result, if not corrected. The job of the mask is to cancel the dye impurities in the negative, so they do not transfer to the print. Thus, only the print dye impurities are seen, and as in a slide, are not significant enough to be noticeable and reasonable quality results.

Optical prints from slides are in general inferior to prints from color negatives due to the lack of a mask, and also due to the high contrast of slides compared to negatives.

Thanks for this I was tearing out the non existent hair on my head trying to find an answer to Steven Lee's question until I read your post above

pentaxuser

DREW WILEY · Oct 9, 2022

Way way too many generalities on this thread. It's a big subject. No color film or color paper ever invented is perfect with respect to its color repro characteristics or native hue palette, and none ever will be. The point is to play to the specific strengths and weaknesses of any given combination. I've made Cibachromes printed directly from chromes as well as RA4 prints from color negs where even pro lab owners couldn't tell which was which. Just depends on how much commitment one is willing to put in. But overall, my advice is to dance with your chosen color medium, and let it lead.

How does slide film work without a mask?

AgX

Color crossover - an illustration

koraks

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pentaxuser

DREW WILEY

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