Canon 10D can’t triger Bowens with flash !?!

[misaj*]

Today I buy Bowens Esprit II 500 & 1000Ws. And I still have to buy Bowens infrared triger, they don’t have one on the shelves now.
I try to sync via PC Socket on 10D, it’s OK, but when I try to trigger Bowens with 10D’s internal flash, Bowens fire, but photo is underexposed, ie., flash light was not captured.

But what is funny, when I try same setting on G2 (M 1/250 --> 1/60 f8.0), these good old camera works perfectly.

I don’t understand, what’s wrong. Is it Canon 10D to fast or what.

Both cameras are on Manual, same settings, ISO 100 & 50 (G2) and preflash is off, but only G2 fire well.

Thanks!

[mattchase]

Unfortunately, with the 10D there is no way to turn off the preflash of the built in flash. If you have an EX (or any center pin manual flash), you could use that on the 10D to trigger your slaves. I have used a Vivitar 283 in the past for such a setup, either on low power or bouncing it off a wall or ceiling so that it wouldn't affect the exposure.

[misaj*]

Thanks!

But as I know, in (M)anual mode, there is no preflash ?!? Or I'm wrong...

Quote from the manual:


" M: Select mode to set the shutter speed and the aperture
The main subject is exposed properly by the flash. The
according to the shutter speed and aperture settings."


According to this, even "M" mode is not full manual....

I appreciate Canon's care for me to always have OK exposed picture, but I would like to have full manual control in manual mode....

[daveh]

misaj* wrote:
But as I know, in (M)anual mode, there is no preflash ?!? Or I'm wrong...


Yes but that's referring to the flash being in Manual mode. The quote you referenced was about the camera. In the EOS system, the ambient light (camera) exposure and the flash exposure are independent. The 10D's internal flash doesn't have a manual mode. An external flash like the 550EX can be set in manual. (Or just use the sync cable.)

[misaj*]

daveh wrote:
misaj* wrote:
But as I know, in (M)anual mode, there is no preflash ?!? Or I'm wrong...


Yes but that's referring to the flash being in Manual mode. The quote you referenced was about the camera. In the EOS system, the ambient light (camera) exposure and the flash exposure are independent. The 10D's internal flash doesn't have a manual mode. An external flash like the 550EX can be set in manual. (Or just use the sync cable.)



Yes' now I’m understand issue.

I don't have enough EOS background, because I use to have Minolta, and as they do not made dissent DSLR until now, I have to switch to Canon.....

Thanks....

[RajaBhat]

Hi, all,
From this thread I seem to gather that the 10D functions differently even in M mode.
With my G3, M mode is strictly M mode. No E-TTL at all. Whereas my EOS Elan IIE M mode STILL utilizes that E-TTL which I love. You can pick your own shutter and aperture and still get E-TTL. Maybe the 10D is the same. G2/G3 is obviously different.
Raja

[misaj*]

RajaBhat wrote:
Hi, all,
From this thread I seem to gather that the 10D functions differently even in M mode.
With my G3, M mode is strictly M mode. No E-TTL at all. Whereas my EOS Elan IIE M mode STILL utilizes that E-TTL which I love. You can pick your own shutter and aperture and still get E-TTL. Maybe the 10D is the same. G2/G3 is obviously different.
Raja

Yes, you are absolutely right.
But than I just would like to have Custom Setup function 19: E-TTL mode in M mode (1) On (2) Off... :)

But there's no that function.

Hm, why that very usefull features can't be done thru new firmware?

Maybe we could ask Mr. Chuck Westfall to tell us if something like that is theoretically possible..

[Derek Smith]

I had exactly the same problem with some Portaflash studio units. Turns out that the slave electronics in the Portaflash units is slow. They were slaving from both the 10D flash and through the PC, but had no effect on the final exposure.

Try extending your exposure time. You should find some point where the shutter is still open when the slaves finally fire.

[misaj*]

Derek Smith wrote:
I had exactly the same problem with some Portaflash studio units. Turns out that the slave electronics in the Portaflash units is slow. They were slaving from both the 10D flash and through the PC, but had no effect on the final exposure.

Try extending your exposure time. You should find some point where the shutter is still open when the slaves finally fire.


Thanks, but my Bowens flash very well.

I just have problem when I try to sync them with canon 10D built-in flash.

PC socket give good timing, also G2's buil in flash....

Buy the way, I try long exposure time, even rear sync, but nothing change.