[Leica] OT: Technical Question- Panning vs WA Lens

[henningw at archiphoto.com (Henning Wulff)]

Pretty well all stitching programs can correct for this, including 
Photoshop. Also for variations in illumination.



>One other comment. I am not discussing the question of how to rotate 
>the camera so that there is perfect stitching. This is an area I 
>have never learned anything about. However, there is one interesting 
>point. If a lens is distortion free (a theoretical ideal never fully 
>realized), then the image of an item in left field should have the 
>same perspective as if it were in the center by aiming the camera at 
>it. So I surmise, that since lenses are not perfect re distortion, 
>and small discrepancies would be apparent at a stitch, that there 
>does exist a procedure that minimizes such effects. Am I making 
>sense?
>
>
>>Bob,
>>
>>The perspective depends on where you are, not on the focal length of
>>the lens. There is a conception that a wide-angle lens produces an
>>exaggerated perspective. Not true. The exaggeration is because, for
>>the same image size, you photograph from closer with a WA. However,
>>if you use a WA, you are wider both vertically and horizontally, so
>>for a pan effect, you are forced to crop out foreground and sky. For
>>the same size final picture, therefore, you should be better off
>>panning and stitching with a longer lens. More work, of course.
>>
>>I say all this based on theory. I've never tried stitching--I assume
>>that's a Photoshop operation.
>>
>>Herb
>>
>>
>>
>>>I am trying to understand if I can take a wide angle photo using
>>>panning/stitching with a normal lens that would look like it was
>>>taken with a WA
>>>lens. My specific question is if I can get the same coverage and 
>>>perspective
>>>using an 80mm Hassy lens and panning/stitching 3 or 4 overlapping shot as 
>>>I
>>>could with the 40mm Hassy.
>>>
>>>If so how would this best be accomplished? Standing back further with the 
>>>80
>>>than with the 40 or just at the same spot with the panning. Would 
>>>the image's
>>>perspective be the same?
>>>
>>>Thanks to all who can help,
>>>Bob
>>>   Bob Adler
>>>Palo Alto, CA
>>>http://www.rgaphoto.com
>>>
>>>_______________________________________________
>>>Leica Users Group.
>>>See http://leica-users.org/mailman/listinfo/lug for more information
>>
>>--
>>Herbert Kanner
>>kanner at acm.org
>>650-326-8204
>>
>>Do not meddle in the affairs of cats,
>>for they are subtle and will pee
>>on your computer!
>>
>>_______________________________________________
>>Leica Users Group.
>>See http://leica-users.org/mailman/listinfo/lug for more information
>
>--
>Herbert Kanner
>kanner at acm.org
>650-326-8204
>
>Do not meddle in the affairs of cats,
>for they are subtle and will pee
>on your computer!
>
>_______________________________________________
>Leica Users Group.
>See http://leica-users.org/mailman/listinfo/lug for more information

-- 

       Henning J. Wulff
  Wulff Photography & Design
mailto:henningw at archiphoto.com
   http://www.archiphoto.com