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To avieve the retrieval of "hidden" data in traditional film requires a
minimum I would think of 3 near identical frames, quite apart from the
hardware and software. Not practical for most of us. I don't think you can say that film is not inherently resolution limited. Since the sensitive material in traditional films is size limited by silver halide crystals, there is, ultimately, a clear physical limit to what can be resolved. Personally I don't dislike grain in a photograph. With digital sensors, I agree with your point. And digital noise is, especially if large, unpleasant. Nevertheless in everyday situations the question is effectively academic. If a picture looks sharp and detailed, then to the vast majority of viewers it is sharp and detailed. I see no value in the argument, other than at an academic level of saying "ah but in reality..." if you can't observe it. With regard to your description of "patently obvious" it still needs someone to realise it and put it into practice! Perhaps that's why I'm not a billionaire... Howard Qkano wrote: <<It was interesting to hear a development in technology, whereby the grain and noise are removed from negative photographic materials to reveal even finer detail that the (camera or film) was apparently able to record. >> Howard. I can hardly see why this merits any real surprise: it is patently obvious. The real, physical, difference between film and digital is that film is not "inherently" resolution limited. That is not to say that digital images from a digital camera - supported by inbuilt post-capture sharpening etc - don't look sharper but that the regular arrangement of pixels is just that, regular. With both random arrangements and random particle sizes of grains in film sub-grain information leaves a trace, confounded in individual frames by the individual unique make up of that frame. A second frame of exacly the same scene adds to the detail whereas with most digital applications the second frame would be almost identical. There are real differences between how an ordered sensor (regular pixel grid) and a randomly arranged medium will capture and represent scenes containing very fine detail. Random arrangements never fall foul of the "false resolution" resulting from aliasing of detail below the grid spacing. Or sommat like that ;o) |
