So then my golf course pano did not suffer from this because by dumb
luck the lens to subject distance did not change much as I rotated the
camera?
Cheers,
Nathan
Nathan Wajsman
Alicante, Spain
http://www.frozenlight.eu
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On Jun 4, 2009, at 7:04 AM, Moose wrote:
> Nathan Wajsman wrote:
>> Thanks for looking, Moose. There was no barrel distortion on the
>> individual images, the cigar distortion in the picture must
>> therefore be the result of the tripod not being perfectly level
>> (and the degree of un-levelness changing as I rotated the tripod
>> head). I need to get a dedicated panorama head which will allow me
>> to align things more precisely and to ensure that the camera
>> rotates around the optical node.
>>
>
> All a perfectly good idea, except it will not fix the cigar
> distortion.
>
> If you read my rant reply to AG, I go into more detail. Or look up
> cigar
> distortion on the web, where there are discussions and examples. It's
> simple optical geometry. It will continue to happen with a perfectly
> level head and perfect rotation around the lens node.
>
> The solution is in stitching software that corrects for it. Or using
> an
> ultra wide lens
>
> Moose
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