wwp@yahoogroups.com:
Re: Yes but!
Fulvio Senore 2005-Jan-17 18:42:00
It depends on the software. Older software had problems if the sky was
not exposed in the same way between shots, causing visible seams. For
this reason it is usually recommended to shoot with fixed exposure.
Newer softwares like Enblend for Panorama Tools can blend exposures
exceptionally well, so small exposure differences do not cause visible
seams.
Some time ago I made a test with strong exposure differences between
shots and Enblend worked really well:
http://www.fsoft.it/temp/enblend_test.htm
Keep in mind that you will have better results if you use many images
(longer focal) because you are likely to have smaller exposition changes
between shots. If you are using a fisheye you are likely to have greater
exposition changes between shots.
Fulvio Senore
mark1schuster ha scritto:
>
> Yes but!
> The pundits say one should use the same exposure setting for each
> individual projection of a complete panorama. Yes, but why? They
> say to make it easier for software to even out the apparent exposure
> throughout the finished panorama. Yes, but not in my limited
> experience it don't. Not from bright sunshine to deep shadow. Left
> to its own devices in auto mode, the camera does most of the work
> for the software before merger.
> Incidentally, I have an Olympus digital camera which in panorama
> mode takes the first image with automatic exposure then locks this
> setting for all the rest of the images. The otherwise reasonably
> good Olympus Camedia software can't handle big differences in
> brightness between images.
> What's wrong with my logic? If I'm right then the experts are wrong
> and I find this hard to believe.
> Mark.
>
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