John Francis:
I'm back to my occasional hobby of peering into the Pentax digital image file format. My latest discovery has been to identify where Pentax hide the code to identify the lens (which isn't available in the standard EXIF information).
This is interesting. I just wrote a program to remove te MakerNote when publishing pictures on the web, but I also am interested in what info this section really contains.
[If anybody cares, it's a two-byte code in subtag 63]
At what offset is it? Either from the start of the file, from the TIFF Header, or from the start of the MakerNote itself. Tell and I'll check with a binary editor.
If anybody has an image taken with an autofocus lens not on the above list I'd appreciate any help you'd care to give.
I have taken a lot of pictures with a Soligor 19-35mm AF f/3.5-4.5 that's not on either your list or the extensive list just posted by Michel Carrère-Gée.
Apart from examining the MakerNote, there also is some extra information in the Exif SubIFD proper as well. Nine tags all starting with A40x that I can't really sort out what they're for. I think that A408 records the contrast setting, A409 the colour saturation setting and A40A the sharpness setting, with 1 being low, 0 being mid and 2 being high. A403 may have to do with white balance. The rest are still mysteries to me, though.
anders ------------------------- http://anders.hultman.nu/ med dagens bild och allt!
