My take on the RF 800mm f/11 DO IS STM for birds

Started 3 months ago | Discussions thread
(unknown member) Regular Member • Posts: 217
Re: Reduce light hitting sensor.

J.K.T. wrote:

MyDog Is Incharge wrote:

If you just crop, the diffraction does not change either

Oh yes it does. Crop out the middle 10% of any image and make it the same size as the original. Notice how unsharp it looks and all the noise, etc.? By you logic I could take any FF image and display it at 10% on my monitor and declare it has more MORE DR and LESS diffraction.

No, it does not. You just magnify it when blowing the image up.

Yep, that why M43 images are as good as FF when you put a FF lens on an M43 camera.   You just blow up the smaller image and everything end up the same. 

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