35mm slide scanner for mac9/15/2023 ![]() ![]() Some scanners won't be able to read certain types of files, so you'll need to convert them to another format before scanning. For print purposes, we recommend at least 3000 dpi for web purposes, between 6 dpi is enough. When scanning images, image quality depends on the size of the original picture. Some scanners also offer 32-bits per channel (96 bits total) and 64-bits per channel (192 bits total), which give you 2^10=1024 shades of gray If you really want to see how low you can go, try 16-bits per channel (48 bits total), which gives you 1 billion shades of gray. With such low resolution, you won't get any details about what was actually captured, so you should avoid using too much contrast. That means each pixel will only contain 256 levels of gray. When you're scanning photos, you'll probably want to stick with 8-bits per channel (24 bits total). As far scanning settings go, there are two main factors you should be aware of: bit depth and image size. ![]() Scanning settings dictate the final output of your scans, especially when you print out the results later on. ![]()
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