Sensor vs lens resolution Q or how many pixel needed to resolve 1 LP ?

Started Jun 13, 2012 | Discussions thread
Peter 13
Veteran MemberPosts: 8,301
Re: Sensor vs lens resolution Q or how many pixel needed to resolve 1 LP ?
In reply to Al_10D, Jun 13, 2012

Al_10D wrote:

Peter 13 wrote:

Al_10D wrote:

The best Canon lenses resolve abput 60 lp/mm (according to DXOMARK) or 1440 lp per height and 2160 lp per width of FF sensor.

That is whatever lines per mm on some particular sensor.

I'm talking about resolution of the lens, 60 lp/mm lens should resolve no more than 1440 x 2160 lp on any FF sensor. (60 lp/mm * 24mm) x (60 lp/mm * 36 mm).

They do not measure resolutions of lenses, as simple as that. They measure the combined resolution of lenses mounted on a specific body.

My question actually is: how many pixel needed to resolve 1 lp ? 2? 3? 4?

This question has no meaning, really. As I explained, above, you always get some improvement, and when you set some limit of acceptable loss, you get your numbers. It is like in statistics - how many people do you need to poll to get a correct answer who will win if the elections were held today? Well, all of them. But if you accept a margin of error, say, 2%, then you get a reasonable number.

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