slave flash with a510

[luchten]

Does anybody know if it is possible to turn off the pre flash on the powershot a510?

Thanks,
Mark

[Kevin_Jones]

I recently got an A510. One of the first things I did was start using my sunpak 433 with a wein slave module.

I havn't had an issue with the preflash, but I put the camera in full manual. I think the preflash only works in P, Av, and Tv. Not sure though. Maybe someone with more experience can enlighten us.

[luchten]

Nice pic. Which slave module do you use (type)? I did a quick search and found that wein has slave modules (WEIN DIGITAL SMART SLAVES) which ignore the pre flash.

Thanks,
Mark

[Kevin_Jones]

Not familiar with the "smart slave". Mine is an old one I had laying around. All it says on it is Wein and HS. I think HS stands for Hot shoe, cause it has both a hotshoe and a pc terminal.

Here found a link. Looks exactly like this except it has no "D". I suspect they are the exact same thing.

http://www.bhphotovideo.com/bnh/controller/home?O=productlist&A=details&Q=&sku=263024&is=REG

I think I paid about half that at a retail store too.


Edit: Since posted the above I played around some more with my equipment. I didn't try the other modes before because I wanted to control both the shutter and the aperature and let the thryster on the flash control exposure. The flash is a Sunpak 433D with a lumiquest pro bounce, and has always been accurate with the auto setting. I did get consistent results in Manual mode, but just now I tried program and Av and both of these modes came out overexposed. I put it back in M and put the shutter at 160 and the aperture at F8 and got a very nicely exposed shot. The flash set at ISO 100 seems to correspond well to ISO 50 on the camera.

Hope that helps.

Kevin

[Moppie]

I think the preflash is linked to the red eye reduction, if you turn that off, it should turn off the preflash.