I did find the Metadata documentation which explained a bit about how exif data is handled.  The documentation I found refers to branch 1.3 and 1.4.  Is the documentation that old or is it supposed to refer to 2.3 and 2.4?  In any event the information was helpful but it just confirms what I have always found, that the base functionality isn't sufficient (which is why I always loved the Advanced Metadata extension).

I'd have to do a lot of additional coding to use the base functionality.  I have photos from multiple cameras and the exif data is different for all of them.  As an example, my Nikon camera uses a bizarre notation for shutterspeed, with everything being a multiple of ten, like 10/600 instead of 1/60s.  I'd have to put a calculation in the code for that, but since I have multiple cameras I'd have to do determine the model, and then do a different calculation for each one.  I'm not a programmer and I've seen in other galleries such as Gallery2 and Gallery3, how the exif code is written, and that's definitely not something I'd want to tackle, mostly due to lack of time rather than lack of interest.  Not a big deal but I hope the Advanced Metadata plugin gets updated for 2.4!

Vern