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Putting the Sharpness of the 30mm and 85mm in Perspective

Started Jan 22, 2017 | Discussions thread
OP ttbek Veteran Member • Posts: 4,869
Re: Putting the Sharpness of the 30mm and 85mm in Perspective

MikeDPR wrote:

You can't assume perfect scaling of a given lens sharpness to higher resolution sensor.

I know, but it was for the sake of making some tentative generalizations/guesstimate.   Nothing to be taken too seriously.

But I do agree that the NX 30mm (and probably the 85mm) is probably among the sharpest cropped lens out there.

DXO measures 14 PMP (perceptive mega pixels) for the NX 30mm which is extremely good on NX20's anti-aliasing filtered 20MP sensor, so we might reasonably suspect that it was a sensor limited measurement, not lens limited. But how high it will go up with additional sensor pixel density is anyone's guess. Given how high it was on AA-filtered 20MP sensor and my image samples on NX1, I'm guessing at least 18 PMP or higher on NX1/NX500's 28MP sensor which may be the sharpest for any crop system.

In comparison, Sony E 35mm f1.8 measures only 11 PMP on A6000's 24MP sensor (w/ weak AA filter). 11 PMP out of 24MP sensor is pretty low and one can reasonably conclude that this is most likely a lens limited resolution, not sensor limited. Thus, you most likely will see little or no additional resolution by pairing with a higher resolution sensor.

My research along this line was actually how I got myself into the NX system.

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