03-09-2012, 08:41 AM
I want to know whether MTF curve of a lens can be tested.
The sharpness of a lens is a combination of resolution and contrast.
Subjectively a lens with great contrast but rather mediocre resolution looks more snappy, maybe even sharper than a low-contrast lens with a high resolution.
MTF50 is not a measurement for sharpness but a measurement for resolution. It cannot show contrast of a lens.
But MTF curve (not MTF50, they are two different concepts) can show the contrast of a lens. Some lens manufacturers offer MTF curve of their lenses, but some don't.
Can someone tell me whether MTF curve of a lens can be tested?
Le Kuai
The sharpness of a lens is a combination of resolution and contrast.
Subjectively a lens with great contrast but rather mediocre resolution looks more snappy, maybe even sharper than a low-contrast lens with a high resolution.
MTF50 is not a measurement for sharpness but a measurement for resolution. It cannot show contrast of a lens.
But MTF curve (not MTF50, they are two different concepts) can show the contrast of a lens. Some lens manufacturers offer MTF curve of their lenses, but some don't.
Can someone tell me whether MTF curve of a lens can be tested?
Le Kuai