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Message:: [QUOTE="desertgem, post: 4457428, member: 15199"]The three things to remember when acquiring a camera/ scope for photographing any small entities, such as RPMs, DD, or other flea specks is : Focus and resolution, Focus and resolution, Focus and resolution.  Every other difficulty can be overcome, but if those are not there, the photo will be pixelated and /or out of focus.  The focusing mechanism on it should be easily adjusted but stay in focus during time it is used. 5mp resolution is about the lowest usable for details except for whole coins. DO NOT believe the ads that say "Up to 1600X" or any magnification above about 30X. Yes mathematically they say that , but it involves interpolation of non-existent data points. So the higher the magnification, the more fake pixels are added to fill the photo. If you are photographing a common subject like the weave of a cloth, you won't notice it, but if you are looking for a tiny part of an "S" under an overlying "D", the fake pixels may hide or distort it. It is hard to find a decent ( although more expensive) USB camera today due to remote learning, meetings, work, Zoom, etc. grabbing them very quickly, but it also means China is making better ones more actively. IMO, Jim[/QUOTE]