Exposure Compensation with Flash

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

David Balfour - 23 Feb 2005 22:31 GMT

Hi all,

I can't get my head round what I need to do here, please can somebody
confirm I have this the right way round.

Say I'm taking a photo of somebody in a dark room with flash (external). My
Olympus OM-2 (full frame average metering, OTF flash metering) will fire too
much flash by default, so I need to underexpose the frame.

I would therefore turn the exposure compensation dial towards the minus
numbers? This would help in reducing the overexposure of the person, because
the camera will shut the flash off earlier?

Have I got that right?

Thanks!

David

Reply to this Message

Mark Dunn - 25 Feb 2005 10:09 GMT

If you mean the compensation dial on the camera, I don't think so. I think
you need to set the ISO on the flash higher, so it thinks you're using
faster film.

> Hi all,
>
[quoted text clipped - 14 lines]
>
> David

Reply to this Message

Willy Eckerslyke - 25 Feb 2005 10:44 GMT

> If you mean the compensation dial on the camera, I don't think so. I think
> you need to set the ISO on the flash higher, so it thinks you're using
> faster film.

Not sure about the OM-2, but on some cameras (eg. Contax 139), the
compensation dial is directly connected to the film speed dial, so doing
either would have the same effect

Reply to this Message

David Balfour - 25 Feb 2005 14:22 GMT

>> If you mean the compensation dial on the camera, I don't think so. I
>> think
[quoted text clipped - 4 lines]
> compensation dial is directly connected to the film speed dial, so doing
> either would have the same effect

Yes, the OM-2 is like this. The flash is fully automatic, so the camera ISO
speed effectively needs to be adjusted. Just wasn't quite sure I had it in
the
right direction - although once I'd typed it all out it seemed to make a lot
more sense!

Thanks for your input,

David

Reply to this Message

Peter - 26 Feb 2005 09:59 GMT

> > If you mean the compensation dial on the camera, I don't think so. I think
> > you need to set the ISO on the flash higher, so it thinks you're using
> > faster film.

There is no ISO setting on the flash as thiss is controlled by the camera
with TTL OTF metering so yes set the compo on the control on the camera.

Pete

Reply to this Message