About lens distortion and correction

Started May 27, 2010 | Discussions thread
Andrew Westlake Senior Member • Posts: 2,928
Re: About lens distortion and correction

aperture 56 wrote:

Does viewfinder and LCD display of MFT cameras automatically corrects the lens distortion look when shooting RAW format?


Interesting, when in camera engine or later editing software corrects lens distortion, the field of view of the image slightly changes as well... so, is it still 20mm lens view equivalent to 40mm FF ?

The focal length printed on the lens takes into account the distortion correction.

maybe the lens is a bit wider to start with, leaving the room for narrowing the view a bit after correction ?...

That's the correct way of looking at it. You don't lose any field of view after distortion correction, as you get exactly what you composed. If you don't correct you run the risk of getting unwanted elements in your picture.

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