New answers tagged sharpness
Any photo you're never going to use again is taking up "unnecessary" space, and frankly no matter what happens to image processing technologies in the future, you're probably not going to go back and reprocess some low quality photos from 10 years ago. On the other hand, disk space is cheap (unless you're Google, Amazon, etc). Very roughly, my SLR has a ...
There might indeed be technologies (like deconvolution, eg. Focus Magic) that can restore some information from those unsharp images. This will probably improve in the future, so you might regret discarding your larger files. Plus, storage is really cheap nowadays.
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