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Is to avoid a circular image with a DSLR?

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Old Tuesday 14th June 2016, 11:45   #1
Martin van Gog
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Join Date: May 2016
Location: Almere, Flevoland
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Is to avoid a circular image with a DSLR?


If I make a picture with my DSLR by my spotting scope, I always get a circular image.
Outside the circle is all black.

I can, of course, with an editing to make a crop.

Or does anyone know a way to prevent a circular recording already while shooting?
Zoom can obviously not, because there is no lens attached to the camera.

In contrast to the use of a compact- or system-camera.

With regards, Martin.

Almere, the Netherlands.
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Old Tuesday 14th June 2016, 21:11   #2
Lisa W
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Hi Martin, I'm no expert but most photos I have seen taken through a scope have the circle. Hopefully an expert will come along and give a better answer.
Actually found a you tube video which might help:
"A bird doesn't sing because it has an answer, it sings because it has a song" - Joan Walsh Anglund

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Old Wednesday 15th June 2016, 17:12   #3
Paul Corfield
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Is there an eyepiece on the scope? I presume that you have the dslr (minus lens) attached to the eyepiece and you are doing eyepiece projection onto the dslr sensor? Increasing the distance of the camera to the eyepiece should get rid of the black circle but it might also increase magnification too much. This could make photography difficult unless you had a low power eyepiece.

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