Prontor Professional flash sync?

[Larsengrafi]

Hi,

I'm a total newbie, so I hope you will bear with me here.

Info on Prontor shutters is hard to find, so I wonder if anybody could help me regarding max sync speed on the Prontor Professional 1. Speeds are 1 s to 1/125 s, but with no clue to sync speed.

Tom

[Bob Salomon]

1/125 it is a leaf shutter so all speeds are x synched.

[Steve Smith]

All leaf shutters (as far as I am aware) will sync. with flash right up to their fastest speeds.


Steve.

[Bob Salomon]

All leaf shutters (as far as I am aware) will sync. with flash right up to their fastest speeds.


Steve.
X synch, yes. M synch, maybe, if the shutter has a x/m switch or contacts.

[Sevo]

It should work, in theory. But M (or any other bulb sync) exposure at short times will depend on whether the burn properties of the bulb still match the table printed onto the box - at short times, you are closing the shutter before the bulb has burned down, and if age has caused the bulb's curve to drift from the specification, you'll be off in a unpredictable way. Given the age of most flash bulbs, it may be wiser to use them at or near their full burn duration (i.e. the longest time given for them).

[Larsengrafi]

Thanks to all!

I picked 1/60 for some macro shots. Developing the film tonight... :)

Tom.