Yes, indeed if you look at the greyscale, there's a huge crossover. It's clearly visible in the thumbnails.
And actually, if you compensate the loss of saturation by adding some digitally, the crossover becomes very evident.
But now, is this crossover visible in real pictures with no grayscale? It depends. In some cases, it may make the image worse, sometimes it will make it better. Or most likely, it won't matter.
It's still worth noticing that the one processed at 77 F would be quite usable (at least for me), even with a whopping temperature error of 23 F. So, we can probably deduce that error in the range of 5F or so are near to perfect. C-41 is quite robust. (But for right contrast, you have to manually compensate the development time, so what's the point processing a few degrees off on purpose?)
And, if you want to lower a saturation of a given film, processing at really low temperatures might do the trick easily, if the crossover is not a problem.
But I suppose David has not really understood how nitpicks some analog photographers really are. They really can tweak some 0.01 density error for YEARS and yes they really can see it! Most of them are B&W zone system maniacs, but it's good to remember that everyone has their own standards and very different threshold for seeing "errors".
But indeed, it is very useful information that these processes can take enormous amount of mistreatment and still produce images many if not most people are completely satisfied with.
BTW, I just made 21 contact sheets with a RA-4 developer mixed 1,5 years ago; now, the fun point is that the unopened, factory sealed concentrates of the very same batch have already gone bad, but the mixed developer is perfectly fine. The blix mixed at the same time was fine too. Which is fun, because Tetenal's blix didn't make it even after that 9 months from the factory to me.
Last edited by hrst; 04-19-2012 at 08:07 PM. Click to view previous post history.