Originally posted by justtakingpics But since I am using manual super takumar lenses, ....
Note that p-TTL does NOT work with manual lenses. If you set the flash/camera at p-TTL mode, the flash will fire at full power.
Same thing applies if you use a flash unit on cameras of different brand. Whatever-TTL is dedicated to one brand. For example, if I use a flash in i-TTL mode (Nikon) with a Pentax K-7 body, the flash will fire at full power.
This is why I did not and will not buy a flash without auto-mode.