Originally posted by Andrews Does Metz 58 decide flash power output by itself ('smart auto' mode) or decision made by camera ?
What if there are two wireless slave's (Metz 58 and 360FGZ ), who/how total exposure calculated ?
Andrew
You have different modes:
– Pentax P-TTL: the camera controles the flash or the flashes, mounted on the camera or wirelessly. This is possible with the Metz 58 or the MZ54-4i with the dedicated SCA-adapter and some more Metz flaash guns
– Metz Auto-Mode, basically the good old Thyristor control – but with the added convenience, that the Metz flash gun reads out the camera settings (aperture, ISO setting and focal length to adjust the reflector) and can dial in the sync-speed on the camera. This is quite as easy to use as P-TTL, but the flash measures the light output, not the camera.
– in Metz Auto-Mode there is also the possibility to use a special "Metz wireless" mode, which only works with Metz flash guns and where one flash is the master, which controles all the other ones.
In my experience Metz Auto mode works better at near distances than P-TTL, but P-TTL can lead to better results if the object is farther away.
All in all, it is a good alternative to P-TTL, because it doesn't need the pre-flash, P-TTL affords. That means, you don't have that long delay between pushing the shutter release button and the actual image taking, which you have in P-TTL. Also, the pre-fllash is something which often disturbs the object, especially when photographing portraits. I often find, that People's eyes are closed on the actual image, when shooting in P-TTL...
Ben