[EMAIL PROTECTED] a �crit :
Hello,
I just bought Pentax AF 360 FGZ flash for my Pentax MZ-6 camera, and I've got some quastion about it. First one (and most interesting for me) concerns to P-TTL mode. The quastion is: how the lite after "pre-flash" is measured? Is it measured by the sensor that measure reflected from the film lite, or is it measured by the main sensor? - My opinion is that it is measured by the main sensor. If it is true - then the new quastion arrise: How dose the camera separetes the ambient lite and lite from flash for calculating right flash impuls ammount?
Second quastion is about P-TTL mode with the wireless mode. The
quastion is about how camera controls flash ammount (using built-in
flash)? Dose it use built in flash to transfer the nessessary
information or dose it uses some kind of radio relays? (Such relays
should be present because of the existence of different channels on
camera and flash). If such channels present then why camera gives the
commands to the flash by the pulses of bilt-in flash??? Why just not
to transfer the information by radio if it already used for some
purposes (instead of built in flash)? This is one of the most
confusing me.
See explanation for wireless sequence on owner manual p. 37 No radio, only flashes for transmission body - flash
Third quastion is about "M" (manual) mode on the camera. Is it ok to use manual mode on the camera together with the flash (on camera and wireless)? Dose any one have the expierence with this? (i.e. I have 50mm lense. When using "A" mode (aperture priority) then camera always set the expose time to "45", and I whant to use, say "90" with the same value of apperture (say "8.0") - then I can switch to "M" mode - and set all parameters as I need ("90/8.0") - will flash operates ok under such conditions?) (If I switch to shurter speed priority and set "90", camera will always set the minimum diaphragm (when the lite is not enough, say in the room in the evening)).
