Hi Jostein - I'm shooting with a 50mm just reverse mounted on tubes / bellows. Because it is reverse mounted, there's not communication with the camera at all. TTL can deal with that, P-TTL can't. The AF360FGZ defaults to TTL mode, and does a good job with exposures.
In theory are you reverse mount a 50mm on another lens it's just like using a close-up filter and should have no effect on exposure. Maybe because the setup effectively reduces the focal length of the primary lens (which is feeding info to the flash) it results in the flash initially sending out the wrong amount of power. Since the old TTL relies on a fast cut-off when the appropriate exposure is reached, being out of kilter at the start might cause a problem. Just a guess - the TTL works pretty well with a simple reverse mounted rig. - MCC Jostein Øksne wrote: > Mark C., > > May I ask which lens combinations you have used for reversals? > > In my experience, the *istD TTL flash metering would give strong > overexposure with reverse mounted lenses when the straight-mounted > lens was an FA, but correct exposure with older lenses. > > Jostein -- - - - - - - - - - - - - - - - - - - - - Mark Cassino Photography Kalamazoo www.markcassino.com - - - - - - - - - - - - - - - - - - - - -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
