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----- Original Message ----- From: "Phil.Lippincott" <email@example.com> To: <firstname.lastname@example.org> Sent: Tuesday, June 11, 2002 5:40 AM Subject: Re: Digicam vs. Scanner resolutions > Kennedy, > I'm sorry this isn't an academic discussion. Aztek has clients doing bill > boards from crops within 35mm. No there is no visible grain on the print I > referred to. Drum scanners do not use an optics lens to see or reproduce images. > The concept is like a laser spot taking each individual pixel as round (not > square) individual and controllible samples. Because the spot is consolable > independently of dpi the grain is manageable also. By the way 8000 3 micron spots > is approximately inch. The smallest spot I ever measured on a CCD scanner with > lenses was 6 micron or about 4000 dpi equivalent spot. I included this print as > one example of scan to print file sizes at my DIMA PMA 2002 Scanning Technology > Round Up presentation at Orlando in March. These kinds of scans are being > performed by the thousands daily at hundreds of Labs and high photographer studio > equipped with suitable scanners. Does it matter what kind of scanning technic is used when the image resolution is already reached ? For 35 mm this could mean that you have to go to grain level and get all the image resolution + disguising the grain as can be done so clever on a drum scanner. But even then you will not get more information than what was written down in grain. It may look good but the same applies to a well done upsampling of a digital image. For 645 fine grain and lens may be equal on image resolution, above that you will only find the coarser grained films that will give a similar equal resolution or grain limited resolution. Sticking to blow ups of 35 mm on a drumscanner as an example for the qualities of film when comparing film/scanning and digicam seems a bit restricted. BTW, is there a list of filmsizes, general lens resolutions, grain size/filmspeed etc so you could use a combination where the image resolution is always near the grain resolution ? I know this is more a thing you have to learn while doing it but there must be someone with an urge to publish that. Ernst - Turn off HTML mail features. Keep quoted material short. Use accurate subject lines. http://www.leben.com/lists for list instructions.