DREW WILEY
Member
- Joined
- Jul 14, 2011
- Messages
- 13,689
- Format
- 8x10 Format
Kodak color films are balanced to 550K. If the lighting if colder than that, or if parts of the scene have a higher, bluer color temp, then the repo of blue and cyan tones, especially at the extremes of the film latitude, is going to be poorly replicated. Then, if you try to correct the overall color balance afterward, your readjustment will affect everything, not just the portion which is specifically off. This might sound like a minor issue, but it's the difference between a Jack In the Box hamburger and a good steak.
The advice which seems to be missing so far is that the spec sheets don't tell you everything unless you're really good at interpolating them. For decades Kodak published and frequently updated very useful handbooks on Color Photography, Wratten Filters, and other key topics. These included the relevant spec sheets; but those were just a small portion of the overall valuable information. Pro photo academies also routinely taught these things, including correct color balancing. It was essential to successful studio work. High quality color temp meters were routine in studios.
The need for these extra helps is not at all negated by today's own film selection. The only difference is that Kodak has no longer has surplus budget to keep that kind of publication going, especially now that digital is dominating both pro and amateur photography. But you can still find many of these publications at used bookstores and reference them for general information, even though the specific films have changed.
In other words, what was once routine and mandatory information for pros has now been forgotten, but at considerable loss to final image quality. Fortunately, you don't need a lot of filters to correct for the problem, and most can still be found.
Now... my own difficult learning curve. Before I learned the necessity of color temp balancing, I took what I surmised were some outstanding 8x10 shots under deep blue shade and assumed they would print just like my chromes had in Cibachrome days. They didn't. Blue and turquoise and even violet came out almost indistinguishable, the dead opposite of traditional color neg films, where it's very difficult to resolve different tones of yellow, orange, and warm tan - everything tries to jump into the same bin of "fleshtone" because those film are engineered to do exactly that. But once I adopted the specific procedures for Ektar I've been trying to describe, suddenly the prints sprang to life - extraordinarily clean, very well differentiated hue nuances in that same category of color which made me go nuts before. Frankly, some of the best color I've ever seen shy of dye transfer printing. Of course, the best match in terms of RA4 paper selection is important too; but that can always be changed, whereas the initial exposure cannot.
I certainly agree with Koraks. But he emphasized another important factor - don't push your luck to the limits of Ektar's contrast latitude, or you'll pay the crossover penalty regardless of the lighting. It doesn't have anywhere near the latitude as Portra films. Expose it as carefully as you would a slide film. But it does have at least a half stop more latitude both directions than typical chrome film before you start encountering issues. It's a great product, but by no means perfect.
The advice which seems to be missing so far is that the spec sheets don't tell you everything unless you're really good at interpolating them. For decades Kodak published and frequently updated very useful handbooks on Color Photography, Wratten Filters, and other key topics. These included the relevant spec sheets; but those were just a small portion of the overall valuable information. Pro photo academies also routinely taught these things, including correct color balancing. It was essential to successful studio work. High quality color temp meters were routine in studios.
The need for these extra helps is not at all negated by today's own film selection. The only difference is that Kodak has no longer has surplus budget to keep that kind of publication going, especially now that digital is dominating both pro and amateur photography. But you can still find many of these publications at used bookstores and reference them for general information, even though the specific films have changed.
In other words, what was once routine and mandatory information for pros has now been forgotten, but at considerable loss to final image quality. Fortunately, you don't need a lot of filters to correct for the problem, and most can still be found.
Now... my own difficult learning curve. Before I learned the necessity of color temp balancing, I took what I surmised were some outstanding 8x10 shots under deep blue shade and assumed they would print just like my chromes had in Cibachrome days. They didn't. Blue and turquoise and even violet came out almost indistinguishable, the dead opposite of traditional color neg films, where it's very difficult to resolve different tones of yellow, orange, and warm tan - everything tries to jump into the same bin of "fleshtone" because those film are engineered to do exactly that. But once I adopted the specific procedures for Ektar I've been trying to describe, suddenly the prints sprang to life - extraordinarily clean, very well differentiated hue nuances in that same category of color which made me go nuts before. Frankly, some of the best color I've ever seen shy of dye transfer printing. Of course, the best match in terms of RA4 paper selection is important too; but that can always be changed, whereas the initial exposure cannot.
I certainly agree with Koraks. But he emphasized another important factor - don't push your luck to the limits of Ektar's contrast latitude, or you'll pay the crossover penalty regardless of the lighting. It doesn't have anywhere near the latitude as Portra films. Expose it as carefully as you would a slide film. But it does have at least a half stop more latitude both directions than typical chrome film before you start encountering issues. It's a great product, but by no means perfect.
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