Forum: Photography


Subject: cd image

delboyo opened this issue on May 08, 2003 ยท 4 posts


DHolman posted Thu, 08 May 2003 at 3:21 PM

All things being equal (same scanner used to scan directly into Photoshop or saved as file that is burned onto a CD), the quality should be the same. I say should because there may be a difference depending on what they save the file as. Ask them what format they use. If it's a lossy format like JPEG then you will lose image data when they save it. If it's a lossless format like TIFF (LZW or ZIP) or PSD then it will be exactly the same as if you'd scanned it directly into PS. If it's a decent scanner (2700dpi or greater) then they are probably compressing with JPEG. My film scanner is 2720dpi and creates ~50MB TIFF image from a 35mm frame. At 17Mb, it sounds like they are using either JPEG or TIFF in Zip mode (and since most apps don't support the Tiff Zip mode right now, I'm gonna guess JPEG). -=>Donald