Dear Trygve Jensen, >> 1)What does the functions (a1,a2,md,m,ttl) stand for,how do they >>work,and is it possible for the F3 to utilize ttl blitz-metering? [snip] NO TTL-metering with F3 and it indicates this by flashing. It will give full power at TTL. So does M. MD stands for MotorDrive and gives 1/16 of full power. Nice feature! Much faster flash and recycling and basic power reduction for manual fill flash. The manual states that a cooling-down period should be considered after several flashes (5-10 ?) in fast succession. A1 and A2 give automatic flash regulated by the SB 22 itself, with different apertures set, as indicated on the back of the device. >> 2)There is also a light which reads bounce.Is it only a warning to >>compensate aperture for the greater travelling distance,smaller amount >>of light reaching the subject,or does it have a function? ..Indeed, a warning. >> 3)online manual? [snip]? >> 4)use it on a Pentax 67?[snip]? The SB 22 never let me down and is therefore one of the most appreciated pieces of equipment in my 'bag'. Good luck,