I would like to use this thread to compile a list of quality-degrading factors in video, how much they are relevant to sport analysis, which component are involved, and how we may improve upon them.
This list should be general and relevant to anything that can provide a stream of image and store it on-device or transmit it to a computer (DSLR, Industrial camera, USB camera, IP camera, Smartphone, etc.). The trigger for this topic though, is the advent of high-quality, interchangeable, small lenses for surveillance-type cameras. We are now very near a day where little USB cameras can be considered serious imaging devices.
Please add your input, illustrative images, comments, remarks, additional degrading factors, formatting suggestions, etc.
Maybe at some point we can create a PDF or something. It should be useful for evaluating new hardware on the market and as a buyers guide.
Here are some topics that could be covered:
limited resolving power - lack of focus.
limited resolving power - long exposure.
limited resolving power - pixel count and lens resolution.
limited resolving power - image processing and JPEG compression.
spherical distortions - wide and ultra wide angle lenses.
vignetting - mechanical and optical.
noise.
flares.
limited temporal sampling granularity - low framerate.
temporal distortion - rolling shutter.
limited illuminance - low aperture.
limited dynamic range.
limited depth of field.
chromatic aberrations.
unfaithful color reproduction.
