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How to Adapt a Door Viewer "Fish-eye Lens" on to a Full-size Camera

Step 2Assessing and Modifying Your Reducer/Adapter

Assessing and Modifying Your Reducer/Adapter
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  • 02.JPG
  • 02a.JPG
  • 03.JPG
  • 03a.JPG
As shown in the first picture, the narrow portion of the reducer coupling is actually a little bit longer than the barrel length of the door viewer.

The second picture illustrates what this looks like from the wide-end of the reducer, which is also where the end of your camera lens will be resting. As the setup stands right now, there are over two inches in distance from the end of the camera lens to the end of the door viewer lens, which wastes the majority of the picture area with blank space. In order to bring door viewer lens closer to the camera lens, the reducer will have to be shortened on each end.

Begin by sawing off the first thread ring on the narrow end of the reducer, using its ridge as a natural guide. (Picture 3.)

CAUTION! The saw blade gets quite hot from the friction. Avoid touching it right after completing a cut.
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