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2 votes

What is causing the camera to have pincushion distortion in air and then barrel distortion in water?

What is causing the camera to have pincushion distortion in air and then barrel distortion in water? In your own question, your speculation is exactly correct: "Currently I am thinking that a ...
scottbb's user avatar
  • 33.1k
1 vote

What lens would suit an A4 large format camera

Alternatively to an enlarger lens, you could use a lens from an 8x10 large format camera. The image circle is probably close enough to mostly work. You might also try adding a fresnel lens or similar,...
davolfman's user avatar
  • 491

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