Lens 'resolving power' vs sensors.

[jrista]

Happy to help. It's just a hobby, really...well, a hobby that assists me in my other hobby, really. I like to know everything about what I do, so as a photographer, well, I had to know how sensors and lenses worked. So I researched it.

Just wanted to point out that the lp/mm for each sensor posted way above are only correct if you have monochrome sensors with tiny pixels (low fill factor) without microlenses and without an AA filter. If you have a Bayer sensor with real pixels and an AA filter, you're going to need at least 2.5 and maybe closer to 3 pixels per line pair.

If you actually read my post, I stated as much.

You made a passing reference to this in a different post and then posted wrong numbers and proceeded to reference those wrong numbers. If you knew this, why not just use more correct numbers?

What wrong numbers? I stated that they assumed a monochrome sensor. Why did I assume monochrome, rather than something else? Because there are a lot of factors that greatly complicate "reality", and I preferred to keep things simple, as not everyone is a mathematician or an engineer. It's easy enough to approximate after the fact to account for other blurring factors. You may care that everything is 100% perfectly exact...most people don't. And when my goal is just to get across the concept, absolute exactitude doesn't matter.


BTW, I did not make a passing reference to the fact that I assumed mono in another post. I made a direct reference in the post I made in this thread:

Real-world resolution can differ a bit when you factor in bayer interpolation, low pass filters, bayer array layout, etc.