Wide Angle 180 Stitching Tests

As I said in my previous post, I thought it'd be a wise idea to test shoot some 180 degree panoramas with the 10-20mm lens I intend to use. I thought a great test for this was the coregated metal fence on my back garden due to all of the intersecting lines. I thought this would be a real challenge for Photoshop to stitch.

To see which focal length produces the best results I shot the same panorama 3 times, each with a different focal length:

10mm

Photoshop didn't really know what to do with these images because the distortion was too great. I did expect this due to the research I've done. Most recommend shooting at 15mm and upwards.

15mm

I was quite suprised to see that Photoshop had no problem stitching these photos. I quite like the distorted effect it creates.

20mm

Of course these ones stitched together just fine, it seems obvious to me I'm best to stay between the 15-20mm range to create a successful panorama. Common focal lengths recommended online seem to be either 16mm or 18mm.