There's an amazing panaroma generator called hugin - it does automatic
layout and stitching of images. I wouldn't be surprised if the next
version takes the photos for you as well.
When you load images, though, it asks for either the HFOV (horizontal
field of view) or the Focal Length Multiplier.
Surprisingly, after much googling, I couldn't find any reference
to what the HFOV was for the iPhone 4 camera. I tried the method
for measuring HFOV in the hugin tutorials, but it didn't give reliable
results, so instead I took a bunch of photos that were very easy to
automatically stitch together and optimized the camera settings and
came up with:
iPhone 4 camera HFOV = 54.77
iPhone 4 camera focal length = 33.46
That may be a bit off, let me know if you get anything different!
iPhone 4 Camera HFOV for hugin
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