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Tips for Mastering In-Camera,Double Exposure Portraits
In article , Eric Stevens
wrote: Most of us, who take other than line prints, end up with shades of gray in there images. which is the result of individual silver halide crystals being exposed or not exposed. The size of the developed silver crystal depends upon the number of atoms which were originally sensitised. Normally it takes at least 4 but it can be many more. Image density depends upon both the number of crystals developed/sq mm and the size of the crystals. otherwise known as film grain. faster film has larger crystals, resulting in grainier images. Don't bother ... i will anyway. To your regret. See http://www.tmax100.com/photo/pdf/film.pdf "The purpose of this complex essay is to demonstrate the following: €Fundamental film particles (silver particles) are distinct from film grain €Silver particles are an order-of-magnitude smaller than common film grain €Film grain is a perceived property; due to visual clumping of smaller particles through emulsion €Resolution of film is related to the size and distribution of fundamental particles in the emulsion €Film grain limits the ability of the smaller ³fundamental particles² to resolve image detail €Imaging film grain is an inadequate method of determining the resolution of a film." Film grain and crystals are not synonymous. i didn't say they were. But then you always knew that ... or else it's wrong. i do, except it isn't the issue. Don't bother. oh, but i will. once again, you don't understand what is being discussed, so you argue against something else entirely. it's very simple: silver halide crystals are either exposed or they're not, and after being developed, they're black or their not there (removed by fixer). in other words, binary. on or off. 1 or 0. |
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