r_hofland Posted March 15, 2005 Share Posted March 15, 2005 The idea is to scan for either end of the OD range of the film (about 4 total) and then interpolate the extremes into the final image. I don't see why this can't be done in digital imagery using a computer program to sample a series of bits from nearly identical scans (just different tonal depths and then filtering out the artifacts). I suspect it would take a fair amount of time and thus not be worth it for most images, but for the few of great interest or value, why not? Link to comment Share on other sites More sharing options...
r_hofland Posted March 16, 2005 Share Posted March 16, 2005 Says: Troy Ammons , mar 12, 2005; 04:22 p.m. the 10000 has an optical resolution of 600 dpi. FYI-- Epson states: Epson Expression 10000XL- Photo $3,199.99 * 2400 x 4800 dpi * 3.8 Dmax, Transparency Unit * Hi-Speed USB 2.0, FireWire? (IEEE 1394) The stated resolution is hardware since I find this on the specs page: E10000XL-PH Our Price: $3,199.99* Product In Stock Product Information Overview Features & Benefits Specifications What's in the Box? Software Accessories Warranty Technical Support Buy Now Where to Buy Specifications Scanner Type * Flatbed color image scanner Photoelectric Device * Color Epson MatrixCCD? line sensor Optical Resolution * 2400 dpi Hardware Resolution * 2400 x 4800 dpi with Micro Step Drive? technology Maximum Resolution * 12,800 x 12,800 dpi with software interpolation Effective Pixels * 87,840 pixels/line (2400 dpi) Color Hardware Bit Depth * 48-bits per pixel internal, 48-bits per pixel external (External bit depth is selectable to 48 bits depending on the image editing software.) Grayscale Hardware Bit Depth * 16-bits per pixel internal, 16-bits per pixel external (External bit depth is selectable to 16 bits depending on the image editing software.) Optical Density * 3.8 Dmax Scaling (Zoom) * 50% to 200% (1% increments) Brightness * 7 levels Focus Control * AutoFocus optics system (CCD and lens unit) I DON'T KNOW HOW ITS IMAGE QUALITY WILL COMPARE TO THE NEW Perfection 4990 WHICH STILL IS NOT LISTED ON THE U.S. WEBSITE. I believe the 4990's resolution will be the same as the 4870-- 4800x9600: Scanner Type * Flatbed color image scanner with Digital ICE? technology for Film and Photo Prints Photoelectric Device * Color Epson MatrixCCD? line sensor Optical Resolution * 4800 dpi Hardware Resolution * 4800 x 9600 dpi with Micro Step Drive? technology Maximum Resolution * 12800 x 12800 dpi with software interpolation Effective Pixels * 40,800 x 51,600 (4800 dpi) Color Hardware Bit Depth * 48-bits per pixel internal, 48-bits per pixel external (External bit depth is selectable to 48 bits depending on the image editing software.) Grayscale Hardware Bit Depth * 16-bits per pixel internal, 16-bits per pixel external (External bit depth is selectable to 16 bits depending on the image editing software.) Optical Density * 3.8 Dmax Link to comment Share on other sites More sharing options...
r_hofland Posted March 16, 2005 Share Posted March 16, 2005 Epson 4990 now at B&H! Dynamic Range= 4.0 Dmax http://www.bhphotovideo.com/bnh/controller/home?O=productlist&A=details&Q=&sku=371657&is=REG Link to comment Share on other sites More sharing options...
michael_briggs2 Posted March 16, 2005 Share Posted March 16, 2005 Don't take the manufacturer's specs for resolution and dynamic range as gospel truth. The manufacturers are notorious for being "optimistic" with these numbers. Link to comment Share on other sites More sharing options...
michael_chmilar Posted March 16, 2005 Share Posted March 16, 2005 There are (in order): <OL> <LI>Lies. <LI>Damned Lies. <LI>(Consumer level) Flatbed scanner specs. </OL> Link to comment Share on other sites More sharing options...
kelly_flanigan1 Posted March 16, 2005 Share Posted March 16, 2005 When I got our one and a half thousand dollar 600 and 1200 dpi class professional flatbeds about a decade ago; conventional thought was that flatbeds would peak at a real 1200 ppi in resolution; when compared to high end drum scan. Today my "amateur" Epson 2450 and 3200 scanners better this barrier; but not by much. The decade old "scanner" seminar I attended seemed to give a decent guess on the future; and warned of specs that are bloated; and add little real resolution. Link to comment Share on other sites More sharing options...
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