On Dec 23, 2005, at 10:39 AM, Jack Davis wrote:
Thanks for the comprehensive answer. A silly final question on the subject: In the case of "A" lenses, must the lens be set to "A" for the pre-flash aperture reading to be detected? No..right?
A KA or KAF mount lens set to anything other the the "A" position on the aperture ring operates as if it were a K mount lens with respect to the exposure system.
Therefore, to obtain P-TTL flash metering (pre-flash), you must lock A lenses to the "A" position on the aperture ring and control the aperture with the body's controls.
Godfrey
