Ben Weinstein Posted May 14, 2007 Share Posted May 14, 2007 In a discussion of push processing with a German DoP friend of mine, he mentioned that some German cinemtographers had done extensive tests pushing 5218, and found that it did not lead to a brighter image, only a more contrasty one, (a darker black) resulting in a perception of added brightness, but no real benefit. Any one ever hear of such a study, or take part in it? B Link to comment Share on other sites More sharing options...
Premium Member David Mullen ASC Posted May 14, 2007 Premium Member Share Posted May 14, 2007 Push-processing increases the density of the negative, so if you exposed normally and then push-processed, you'd get more density than normal as a result. But usually push-processing is combined with underexposure to end up with normal density. So the image, if underexposed by one stop, and then pushed one stop, wouldn't end up "brighter", it should end up normal in brightness, more or less. But the result would also be increased contrast and more graininess, plus some color shifting and perhaps color in the blacks. Pushing doesn't increase sensitivity -- it can only take what was captured by the emulsion and increase its density after processing. Link to comment Share on other sites More sharing options...
Ben Weinstein Posted May 14, 2007 Author Share Posted May 14, 2007 Well put, thank you. What about Fuji 500T Eterna pushed one vs. 5218 pushed one? For grain? DOe one handle a push better? b Link to comment Share on other sites More sharing options...
Premium Member David Mullen ASC Posted May 14, 2007 Premium Member Share Posted May 14, 2007 They both handle a one-stop push well -- I've done it to both stocks on different features. However, I haven't done a side-by-side test. Link to comment Share on other sites More sharing options...
william koon Posted May 18, 2007 Share Posted May 18, 2007 They both handle a one-stop push well -- I've done it to both stocks on different features. However, I haven't done a side-by-side test. David, What happens if I overexpose the stock by 1 stop and pull 1 stop in processing? Does it mean it decreases the density and lessen contrast? Thanks Link to comment Share on other sites More sharing options...
Premium Member David Mullen ASC Posted May 18, 2007 Premium Member Share Posted May 18, 2007 David, What happens if I overexpose the stock by 1 stop and pull 1 stop in processing? Does it mean it decreases the density and lessen contrast? Thanks The net density is normal because you would normally have gotten extra density from the overexposing, but you pulled the processing by the same amount to compensate and thus ended up back to normal density. Pull processing reduces density. However, you'd end up with less grain, less contrast, softer blacks and colors. Link to comment Share on other sites More sharing options...
william koon Posted May 19, 2007 Share Posted May 19, 2007 The net density is normal because you would normally have gotten extra density from the overexposing, but you pulled the processing by the same amount to compensate and thus ended up back to normal density. Pull processing reduces density. However, you'd end up with less grain, less contrast, softer blacks and colors. thanks David Regards Link to comment Share on other sites More sharing options...
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