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<p>[QUOTE=&quot;moreotherstuff, post: 575315, member: 56&quot;]Silver gelatin are the most common black and white photographs.&nbsp; It&#039;s the type of film used for snapshots before color.&nbsp; Of course, it was used professionally as well.&nbsp; Silver salts were embedded in a thin gelatin layer applied to a clear acetate film for negatives, or an opaque paper for positives.</p><p><br /></p><p>From a purely artistic standpoint, I don&#039;t think the medium should be the determining factor, but there were (are) many different media and techniques that can be used to produce photographs.&nbsp; Some of them are more obscure than others and no doubt there are people who collect on that basis.</p><p><br /></p><p>Some techniques - ambrotypes, tintypes, etc. - may be indicative of antique periods, but I&#039;ll bet you could find modern practitioners of any given method.[/QUOTE]</p><p><br /></p>

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