Hmm, I'm not sure what you are describing as the light source. On my transparency adapter, the unit fits on top of the flatbed (it replaces the normal lid) and plugs into the back of the unit. It has its own independent light source. The surface area of the light source is 4x5 inches - quite a bit larger than the 58 mm you describe. Are we discussing two different units?
-- Brian
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Solution #2
posted on Aug 01, 2007
herself - usenet poster
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... SNIP
Actually it is a staggered 1200 ppi scanner, meaning that it has an MTF that's better than of a 1200 ppi CCD and a resolution that is also somewhat higher.
Filmchoice depends on the subject, although a lot can be done in postprocessing. For a 13 x 17 inch print at 300 ppi you need 3900 x 5100 pixels. However, in an attempt to avoid aliasing and noise, scan at the max resolution, then downsize.
Bart
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Solution #3
posted on Aug 01, 2007
Odud - usenet poster
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You are wrong about the Epson Perfection 1650 Photo. It comes with a light source about 2-1/4 inches wide by 10-3/4 inches long and is designed to scan only 35 mm film (negatives or slides). You may be able to scan most of a 120 or 620 size negative. To scan a 4x5 you need the purchase the accessory light.
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Solution #4
posted on Aug 01, 2007
Riddle - usenet poster
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"Brian P." < ...
Brian,
I wonder, how do you manage to scan 4x5 negs on the 1650? I recently got one (Perfection 1650 Photo), and am trying to (also) scan my medium format b&w negs with it. The lightsource is only 58 mm however, and this shows also in the Epson scan software, so I'm missing a small part of the 120 neg all the time. Makes me wonder how you do it. Could there be a difference in the transparency-units, are they different (larger) when bought seperately? -- vriendelijke groet/regards Willem Falhaber b&w gallery: #
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Solution #5
posted on Aug 01, 2007
Bray - usenet poster
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I am working myself up to do 4 x 5 photography. I intend to use color negative film, have it developed commercially, and scan it with my Epson 2450. I have been getting good results with medium format and that scanner, scanning at 2400 ppi. But 2400 ppi scans of 4 x 5 film will produce enormous files, particularly if done at 16 bits per channel.
Which films would you recommend for such work? What resolution is adequate for high quality images which might be enlarged to 13 x 17 inch prints?
-- Leonard Evens 847-491-5537 Dept. of Mathematics, Northwestern Univ., Evanston, IL 60208
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