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I have Tamron 18-270 Lens F3.5-6.3 on a new Canon RP camera. I bought the Commmlite adaptor to use my old lenses.

I am getting a black ring around my photos (I can see this in the viewfinder)

I am new so please forgive the question if it is obvious.

enter image description here

brentwpeterson
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1 Answers1

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It seems your lens is for APS-C format cameras, and your camera is full frame.

So, it's not the adapter itself, but the sensor size: Your lens projects an image big enough for APS-C sensors, but too small for the sensor of your camera.

vsis
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