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calder
member
Reged: 12/13/05
Posts: 81
Loc: Schuylkill County, PA
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Re: Thoughts on wide-field film astrophotography
06/28/08 11:20 PM
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I believe that film still has the advantage, especially for wide field images and enlargements but the gap is narrowing. I think the key here is the resolution and sizes of the chips in DSLRs. Until a digital camera's chip can match a 35mm negative in size and can match the resolution of ASA/ISO 50 film in resolution, film will hold the edge. I recently read on the DSLR forum about how someone said that 35mm film has more noise than a DSLR. I was shocked by that. Film does not have noise it has grain. Generally the slower the ISO a film has, the finer and tighter the grain structure is. In a DSLR you reduce noise by dropping to a lower ISO. The difference between the two is that with film, the photons are still being recorded in the granularity where as in a DSLR noise represents lost information. Other advantages of film cameras when compared with DSLRs are film has no dead or bad pixels. Most film cameras do not need batteries to operate. Film cameras are more durable. Film cameras do not have all the unnecessary unwanted and unneeded menus and options DSLRs have (keep it simple stupid let us be creative on our own). DSLRs are still evolving and I personally don't want to get on the same merry-go-round path of having to buy a new camera every three to five years because of improvements that make the old DSLR obsolete. Perhaps the DSLR manufacturers will get wise and design a camera with replaceable upgradeable chips rather than having to buy a new camera every time there is an improvement. I doubt it because there is less money to be made making cameras with upgradeable chips.
Just my 3 cents...now I'd better duck and cover!
Bob
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Stiletto
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