R-D1 using a Pentax Flash?

[krisliu77]

I've got a pentax af220T flash, and set on camera to try to using it.

And it works! But I am afraid if it will harm for my rd1.

Any ideas guys?

Cheers

Kris

 

[Jim Watts]

The af220T is not listed on Botzilla: http://www.botzilla.com/photo/strobeVolts.html (200 & 280T are), but most Pentax flashes are below 8 volts so should be OK.

 

[krisliu77]

The af220T is not listed on Botzilla: http://www.botzilla.com/photo/strobeVolts.html (200 & 280T are), but most Pentax flashes are below 8 volts so should be OK.

Thx mate, just wondering, if it's not ok to put a pentax flash on rd1, will it harm for rd1 or the flash?

Cheers

 

[Jim Watts]

It's only the trigger voltage thats an issue. Some early flash guns have trigger voltages over 600 volts. Most modern digtal cameras will only cope with about 25 volts (some 250). Any more will 'fry' the the camera circuits :bang:, but the flash gun should be OK 😀

 

[krisliu77]

It's only the trigger voltage thats an issue. Some early flash guns have trigger voltages over 600 volts. Most modern digtal cameras will only cope with about 25 volts (some 250). Any more will 'fry' the the camera circuits :bang:, but the flash gun should be OK 😀

This flash use 4 AA batteries, it might be fine. Thanks man.

 

[usayit]

Don't make the assumption that a flash powered by small AA batteries are not capable of high trigger voltages.

 

[krisliu77]

Don't make the assumption that a flash powered by small AA batteries are not capable of high trigger voltages.

I can't find any information about how much volt this flash got. I don't want destroy my r-d1.

 

[Axel]

I can't find any information about how much volt this flash got. I don't want destroy my r-d1.

You can measure the trigger-voltage yourself between the big contact in the middle and the (or one of the) outer contacts that connect to the case of the hotshoe.
A simple multimeter in AC-mode works for this. Remember that the flash has to be "on" and fully loaded.

Regards, Axel

 

[Matthew Allen]

It's easy enough to measure your flash's trigger voltage:

http://www.botzilla.com/photo/g1strobe.html

Matthew

EDIT: Axel beat me to it - but surely you mean DC mode don't you?

 

[ChrisN]

Don't make the assumption that a flash powered by small AA batteries are not capable of high trigger voltages.

Yep! I have a small flash with just two AA batteries. The trigger voltage measures at 177V! 😱