"The best camera is the one you have with you," said photographer Elliott Erwitt. That may be why smartphones are so popular, stealing the show from classical cameras. This could hardly be due to their photographic quality… or could it?
The cameras integrated in smartphones fulfill all the prerequisites for bad photographs. Although technical writers have reason to assume that new developments in camera technology cannot overcome the basic laws of physics, the snapshot quality of current devices is impressive. Can these devices really be used for the challenging technical object photography in user manuals? The surprising result: Yes, it is possible, and with just a few limitations and attention to a few tips.
First, some basics
The sensor size and the quality of the lens play a crucial role in the quality of photographs using digital cameras. Manufacturers continually reduce both these parameters, primarily due to cost.
Physically, smaller sensor sizes lead to a smaller area per phototransistor (“pixel”) for the same number of megapixels. For instance, there is a difference of factor five in the pixel diameter ...
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