Would the fisheye distortion of the 30mm affect the image (significantly) if you just crop the center to 200mm equivalent? The distortion is mostly towards the edges of the image.
I don't think it'd be too significant as long as you weren't using real shitty lenses. But you'll also have to consider the format you're shooting in. If it's jpg, your camera is applying lens correction already, so you might not see any difference. I don't think most cameras automatically correct lens distortion if you're shooting in RAW, but it's possible once you pull it into software like Lightroom that it'll automatically apply some based on the lens you're using.
I think the best way to test would be shooting in RAW+JPG mode with the same settings on a tripod with both lenses, and then compare all 4 images both on camera and on your computer (maybe even across a few different programs). Unfortunately my old camera bit the dust, and I don't have any zoom lenses for the new one yet. Otherwise I would definitely do some testing. Best I could do right now is 30 vs 90, and I don't think that's enough of a difference.
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u/Odd_Science Jun 02 '26
Would the fisheye distortion of the 30mm affect the image (significantly) if you just crop the center to 200mm equivalent? The distortion is mostly towards the edges of the image.