The body obtains the specific lens information from the lens' ROM. I
believe it only gets this level of data from SMC Pentax- F, FA, DA
and D-FA series lenses.
Sigma and other third party manufacturers reverse engineer the Pentax
lens mount and lens ROMs, so the EXIF metadata with them often does
not indicate the correct lens.
Godfrey
On Mar 23, 2006, at 12:44 PM, Roman wrote:
I wonder how Pentax determines attached lense type. I can read
Lens Type : smc PENTAX-FA J 75-300mm F4.5-5.8 AL
in EXIF for example which is correct. Does it only apply for Pentax
SMC lenses or other, Sigma lense has coding recognized by the camera?
