I was reading this paper which states that
My question is in regards to the first paragraph. I was first imagining, that if I were to try to take the same photo on a smaller sensor as on a large sensor, I would obviously need to use a wider-angle lens, to obtain the same AOV. This would also, as they mention, lead to the sensor needing to resolve more detail per millimeter on the sensor. However, they then mention that the sensor must have a higher resolving power and from my knowledge, when talking about spatial resolving capabilities of a lens (spatial frequency) it has solely with its pixel count.
So when I read the statement, to me it reads that the smaller format sensor needs a higher k value (pixels) than the larger sensor. However, wouldn’t the same K value suffice to obtain the same resolution as limited by the Nyquist limit, albeit as mentioned the SNR will be worse.
Edit: I was also thinking about it that measuring the same resolution (lines/mm) in real life, would lead to more lines/mm on the smaller sensor compared to the larger sensor, but with this thinking the resolution of the real life object imaged is still the same, so idk why we would describe the smaller sensor to have a higher resolving power.
I’m sure there is something I’m misunderstanding, perhaps it relates to the fact that I did ignore contrast or rather assumed both to have equal contrast. I also added an image from Edmund optics to perhaps help show what I was talking about.