allmac said:
Two questions from one new to digital photography:
1) How would the digital "photo to CD" option compare to scanning from negatives? In other words, what is the best resolution that could be obtained when developing photographic film and having the developer at that same time create the digital .jpeg, .tiff, etc. files? (and is there better quality available from some of these processors, using different equipment?)
The photo CD's ARE scans from negs. Many of the automtic machines don't do direct prints anymore. They scan the negs and usa a laser to expose the paper. So they just save the digital data for you. I don't know the file size but I'd expect a dust and scrtach free scan. I suspect different services might givr you diferent file size. Full 4800DPI scans in TIFF are huge, like 100MB per image. You could only fit 6 per CD. So they would have to compress them somehow as the 100MB files are pointless anyways
allmac said:
2) Is this ranking of formats and associated "Best to Worst" resolution correct:
Best/Highest resolution possible:
4 x 5 film
35mm slide
35mm negative
Good resolutions:
scanned 35mm slide
scanned 35mm negative
10 megapixiel DSLR
5 - 8 megapixel DLSR or "point & shoot"
Lower resolutions:
scanned photograph
2-5 megapixel point & shoot
Polaroid
1) I think Negs win over slides. They have much greater range of tones I'm not sure about details but 100 ISO color neg film is good
DSLR vs. point and shoot: a 6MP Nikon DSLR completely blows away a typical 8 or 10MP P&S camera. The P%S will have very noticable noise in the image and typically much poorer optics
Some Polaroid images are absolutly outstanding. However many consummer level Polaroid camera had cheap plastic lens and sold for like $25. Profesional level camera loaded with
Polaroid film make greatimages. I had a Pol. back for my Mamyia RB67. When you place a $1,600 lens in front of the Polaroid film the results are ultra-sharp. Same applies for Pol. filmholders on view camera.
In 1979, Ansel Adams used 20 x 24 inch Polaroid film and an oversized camera to make a portrait of Jimmy Carter. Carter chose Adams and the Poleriod for his "officeal" portrait.
However the camera (and 20x24 film) was really designed for photographing museum artwork