Originally posted by thepedant Most of my photography is done with the K1 mk II set on Aperture Priority and that's what it says in the EXIF most of the time - with an occasionall 'Manual', 'Shutter Priority', 'Auto' here and there. But I have just noticed that there are quite a few shots in my archive where the EXIF data says Exposure Program 'Not Defined'. In one particular case this is quite annoying because I would really like to know what the setting was when the shot was taken. Does anyone know what setting causes Exposure Program to say 'Not Defined' please?
This can be down to the software being used not "understanding" the codes used by Pentax, so returning a null string. Alternatively, maybe the EXIF has been modified by some third-party software. Some programs appear to "adjust" the EXIF to suit their own ends, leaving it unusable, in part at least, by other programs … (bin there, done that!)
I'd double-check using the latest version of the supplied "Digital Camera Utility" … if that doesn't understand Pentax, then nothing will!