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1 vote

What happens when you attach a fisheye lens in reverse with a reversing ring?

Optics can be viewed from either end. I.e. the subject can become the sensor, and the sensor can become the subject; the functional light paths/ray traces remain the same. What a camera lens does is ...
Steven Kersting's user avatar
4 votes

What happens when you attach a fisheye lens in reverse with a reversing ring?

Generally you can't. Most fisheyes have convex/bulgy front elements and no filter threads. E.g., the Samyang/Rokinon 8mm f/3.5: It can't take any screw-on filters. Which means there's no way to screw ...
inkista's user avatar
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1 vote

What is wrong with my 0.15x fisheye adapter, by Weltblick, a Kenko/Soligor/Spiratone clone (or not)?

Perhaps the OP's situation is different. For other people who come across this post seeking to understand : If the intermediate lens (ie the lens between the Weltblick/Spiratone auxiliary lens and the ...
David's user avatar
  • 11
0 votes

What is wrong with my 0.15x fisheye adapter, by Weltblick, a Kenko/Soligor/Spiratone clone (or not)?

I had what looks to be the same issue. The aperture of the intermediate lens is vignetting the image. Shoot in full manual and set your intermediate lens to max (f1.8 or so), and the image circle and ...
David's user avatar
  • 11

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