Stitching images shot at different focal lengths

Stitched Panorama

This is a test. This is a test… The boring panorama of my apartment building is a stitch of two frames, on the left a full-frame shot from a Canon 5D3 with an 18mm lens, on the right a crop sensor frame from a 7D at 10mm (16mm equivalent). The only point is that it works! My stitching software (Autopano Pro) combined two frames, taken on different cameras with different pixel scales using lenses of different focal lengths, with no problems. (It seems to interpolate to the smaller pixel scale, so I ended up with an enormous 66 MP image.) The panorama here has a horizontal field of view of about 120 degrees, but that was with a lot of overlap, and in theory with these two lenses you can get close to 180 degrees horizontally.

Normally of course you’d shoot a panorama like this with one camera. I’m testing using two cameras because I want to try shooting star trail panoramas, for which the left and right frames have to be shot simultaneously. Originally I feared this would need two identical cameras and lenses (which I don’t have), but at least for a scene like this the software can cope with different cameras and lenses without difficulty. A plate to mount two cameras to my tripod is on order, and once it arrives I’ll see how it works with the night sky…

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