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#11
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Digital to film
Rob Novak wrote:
On Sat, 01 Apr 2006 20:08:56 -0800, David Nebenzahl wrote: Don't know exactly how to do this, but one piece of advice I can offer: if you find a service bureau that can make film from your file, have them do it on something larger than 35mm. No point in limiting the resolution of the film if you can use something larger (like 6x8, 6x9, etc.). Putting the image on bigger film does not magically create more detail and resolution. Nor would the vast majority of digital images tax the capabilities of even 35mm film. If you're talking about captures from a D2x, a EOS 1Ds-MkII, or a Hassy/Leaf/etc. medium format back, you would be at the edges of even the finest grained 35mm slide stock at 12, 16, 22 megapixels, with the last probably requiring a larger negative to express. This is a fairly complicated area, there is loss of information going from digital to film or film to digital. It takes a fairly larger digital image not to degrade the information in a good high resolution 35mm slide but it also take a large piece of film not to add noise to a 8 MP digital image. But even when dealing with detail film does not do all that well with low contrast fine detail and so to keep this in tack it would take a fairly large piece of film. It would be an interesting experiment to transfer a 8 MP digital image to a 35mm slide and then scan it back and see how much loss there is, I am betting the scanned image would be no better then a 3MP image. Scott |
#12
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Digital to film
Tom Gardner wrote:
Is there a slick way of putting digital images on film other than a copy stand and shooting film of a print? I have a number of digital images that I have photochoped or want as transparencies or negs, preferably on 120. I can still do things in the darkroom that I can't do digitally and vise-versa. Has anyone tried printing a digital image onto acetate sheets (the kind used with overhead projectors), and making a contact print in the darkroom? I don't know how well it would work, but it would be an interesting experiment. -Tim |
#13
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Digital to film
"Tim" wrote
Has anyone tried printing a digital image onto acetate sheets (the kind used with overhead projectors Yes, called a 'digital negative' or some such. I have wanted to try to produce contrast masks - not 'unsharp' masks [that are actually sharp] - but fuzzy masks that sit above the negative in the light path, out of focus, and do a precise and repeatable dodge/burn for the negative. Can also do contrast control with yellow and magenta areas. There was an article in PT in the recent decades about doing this with pencils and Mylar drafting film. -- Nicholas O. Lindan, Cleveland, Ohio Consulting Engineer: Electronics, Photonics, Informatics. Remove blanks to reply: n o lindan at ix . netcom . com f-Stop enlarging timers: http://www.nolindan.com/da/fstop/ |
#14
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Digital to film
"Tim" wrote in message ... Tom Gardner wrote: Is there a slick way of putting digital images on film other than a copy stand and shooting film of a print? I have a number of digital images that I have photochoped or want as transparencies or negs, preferably on 120. I can still do things in the darkroom that I can't do digitally and vise-versa. Has anyone tried printing a digital image onto acetate sheets (the kind used with overhead projectors), and making a contact print in the darkroom? I don't know how well it would work, but it would be an interesting experiment. -Tim I've done this with B&W photo restorations. Scan in the old/damaged original, do the artwork, and print it out as a negative on overhead transparency material. Contact print as if it were a negative. It works well. In my experience (YMMV), it uses a lot of ink, and the 'negative' has a short life-- within weeks, the blacks became lighter density magenta. I've tried it with color: doing a straight negative reversal and printing with a light source filtered thru a piece of blank color film so as to get the correct orange color mask. I haven't been very successful in this effort. -- Ken Hart |
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