----- Original Message ----- From: "Godfrey DiGiorgi"
Subject: Re: flash on *istDs (was: Survey D and DS result)
--- Kostas Kavoussanakis <[EMAIL PROTECTED]> wrote:What? The built-in flash does not do TTL with pre-F lenses? Is this a joke and if yes whose idea of a joke is it?
The built in flash on the *istDS does P-TTL and operates with all lenses from the manual focus A-series onwards. With M series and prior lenses, it operates as a simple manual flash, I use it with the camera in Manual exposure mode.
I suppose it might work with pre-A series lenses in Av exposure mode, I haven't tested that. It might just think the lens is at full aperture because it doesn't stop down an M series or prior lens in that mode even for ambient light use and it does meter correctly at full aperture.
With the camera in manual, the built in flash, and I presume also, an external TTL flash, is output controlled by the camera when an M lens is mounted.
William Robb
