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Maybe I'm missing something, but most of your comments seem to be focused on limitations of the sensor, not on the lens itself. (It's hard for me to picture how
by Steuard 13y ago
Maybe I'm missing something, but most of your comments seem to be focused on limitations of the sensor, not on the lens itself. (It's hard for me to picture how a lens would behave differently at low light intensity than at high intensity: the light rays all bend the same way regardless, right?) Your point about diffraction-limited resolution is well taken, but for two lenses with the same aperture projecting onto identical sensors it sounds like this technique could make low-end products more competitive with high-end ones. (Let me know if I've missed your point.)
- jakobe 13y agoThis method tries to correct specific lens errors. To do this, you need very good intensity resolution. If you have poor intensity resolution, information is lost and the lens errors cannot be corrected anymore. In low light, the signal to noise ratio will lead to poor intensity resolution, and the lens errors become irreversible. A better sensor will only get you so far; since light is quantized (a ray consists of individual photons), there are physical limits to the intensity resolution possible at low light. Once information is lost, there is no way to recover it. And that's why you just can't make up for a crappy lens with sofware.