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1280 * 1024 * 10 / 8 = 1638400 bytes. 640 * 480 * 10 / 8 = 384000. Anything smaller than that must be compressed. Specifically, if you see varying file sizes depending on image content, you know that some compression is going on. But really, if you want to do something with the data, you have to know the image format anyway and if you know how to decode ...


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It is likely that scaling down the image in post-production will remove as much noise as the in-camera processing. But in one case all you have is the low-res picture, and in the other you (or someone else with more experience with raw files or image editing) can go back to the full image if necessary. Of course the 90D may have ore pixels, but: for the ...


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Corel PhotoPaint will convert JPG files to RAW. Comparing file sizes shows the degree of data loss in JPG. However, if the size of the JPG file is large -- a function of the number of megapixels and the color variation in the photo, and many other factors -- could not the JPG be converted to RAW to 'hold' the original so it does not deteriorate with ...


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