Originally posted by Eder I have a Metz 52 and I allways use it on Manual. I want to try "automatic" but I can't understand how this works.
If i set my camera on manual and i set whatever ISO, speed, and f, and lets say is one step under, If I shoot on PTTL the falsh will shoot a couple of mini flashes then will evaluate the amount and then magic! a nice exposure. Is it like this?
Or do i need to set the camera on auto also and then my flash wil sync with my camera with PTTL and i will have a nice exposed photo?
Yep, that's how it works. It shoots a pre-flash, looks at the exposure of that, calculates the correct exposure, then shoots the actual flash.
Originally posted by Eder What are the settings and circumstances when you have to use PTTL? Also if I tilt the flash gun or if I use any difuser or the white card, does PTTL recognized it?
PTTL HSS, what is the maximum speed that HSS can work, I know that my model (kr) Sync speed is 180, my manual says:
"High-speed flash sync is available only when the shutter speed is grater than 1/180 sec" So, what's the max value?
Metz manual says "Various cameras support automatic highspeed synchronisation (see the camera’s operating instructions)" So, is an info loop
If I bounce the flash lets say shooting to the ceiling does PTTL recognize it?
I think PTTL is harder than manual, please some one illuminate me a little bit.
There aren't any circumstances when you
have to use PTTL. Its an auto mode that you can choose to use or not. The camera will automatically set the flash into PTTL mode when you are using an auto mode on the camera body, such as Av.
If you tilt, swivel or use a diffuser, the flash still uses a pre-flash and measures through the lens (TTL) to adjust its power automatically. It will
attempt to give you a correct exposure, though, it may not have the power to always do so (like bouncing onto a black ceiling).
HSS works by using short bursts instead of one fast flash. Its basically like using a bright flashlight. So, you can use it at higher shutter speeds, but the amount of light will get lower with the faster shutter. I think the fastest speed is probably somewhere around 1/4000, but by then you are cutting out so much light, its not very effective anyway.
Its basically just a green auto mode for flash. Do whatever you want on camera, the flash will try to make the correct exposure