why signal to noise ratio is defined by mean and sigma?
greeknerd1
I'm wondering why it makes sense that photons arrive in a Poisson distribution. Why do we model photons using this distribution? Are there other distributions we could use that would be equally effective and accurate?
phoebeli23
The SNR formula reveals that noise decreases as the number of photons / brightness level increases.
hyang23333
photons arriving in a Poisson distribution might be caused by photons generated by an atom generally modeled by a Poisson distribution.
melodysifry
Other than aperture, what other camera settings can change the SNR? It seems like the sole relevant decider of the SNR is the mean number of photons arriving. By this logic, would anything that increases the exposure (like increasing shutter duration) also have the same effect on SNR?
why signal to noise ratio is defined by mean and sigma?
I'm wondering why it makes sense that photons arrive in a Poisson distribution. Why do we model photons using this distribution? Are there other distributions we could use that would be equally effective and accurate?
The SNR formula reveals that noise decreases as the number of photons / brightness level increases.
photons arriving in a Poisson distribution might be caused by photons generated by an atom generally modeled by a Poisson distribution.
Other than aperture, what other camera settings can change the SNR? It seems like the sole relevant decider of the SNR is the mean number of photons arriving. By this logic, would anything that increases the exposure (like increasing shutter duration) also have the same effect on SNR?