[ptx] Getting EXIF data from coolpix 950 jpgs using hugin

[Pablo d'Angelo]

Hi all,

Glenn Barry wrote:
> Hi Habi,
> 
> I've got a few different figures here for you to ponder.
> 
> Carl Zeiss Vario Tessar "folded" (internal) 3X Optical, 6.7 – 21mm
> (38-114mm equivalent)
> 
> Is listed on the site you linked
> 
> From the lens figures:
> 
> Now if you simply divide the equivalent focal lengths by the actual
> focal lengths I get 5.4285714285714285714285714285714 at the long end
> and 5.6716417910447761194029850746269 at the short end. So lets say 5.55
> which sits about the middle.


Yes, I'd use just this. Often you optimize the hfov (v) anyway, so the
initial focal length (and thus hfov) values entered do not need to be
very precise.

Beware that the CCD size given in inches (for example 2/3") is neither
the diagonal nor the longest dimension of the active image area of the
CCD chip. Is the diameter of an equivalent TV camera tube... Its hard to
believe but true.

See
http://www.dpreview.com/learn/?/Glossary/Camera_System/Sensor_Sizes_01.htm
for more details.

ciao
  Pablo