| Author | Thread |
|
|
11/13/2004 01:15:09 AM · #1 |
Hey hey :)
I am mid a studio lighting course, great stuff :)
A couple of the other people (which makes it 50% of the course *laugh* came across a problem when we first got to play with out cameras and the studio flashes.
The pre-flash was tripping the strobes, so they fired too early and their photo was thus taken in the dark.
Is there a way with a 300D and 420ex combination to stop the preflash firing completely? I can do it with my setup (20D & 580ex) but have no idea how to do it with their setup.
Anyone know the answer to this one?
|
|
|
|
11/13/2004 01:18:46 AM · #2 |
No. You will need the 550ex to do this.
|
|
|
|
11/13/2004 01:24:14 AM · #3 |
Originally posted by jmsetzler:
No. You will need the 550ex to do this. |
Bugger.
Oh well, their problem not mine, but said I'd check it out for them as neither of them seem to know about forums etc.
Thanks John, I feared that might be the case.
|
|
|
|
11/13/2004 01:35:03 AM · #4 |
| I found that using a generic flash in the hot shoe disables the pre-flash on the Sony F828, I would think this would be the case fall all cameras with a hot shoe. I use a very low power flash, sometime pointed backwards, for me this work well. |
|
|
|
11/13/2004 01:50:09 AM · #5 |
The 550 and 580 EX can be configured to fire these other strobes without firing themselves. I found this quite useful in a couple instances. You may have a situation where you want to use them to trigger other flashes/strobes without firing themselves.
** Edit: This function may only work with other Canon flash units. I'm not sure if it can fire external strobes without firing itself...
Message edited by author 2004-11-13 01:51:19.
|
|
|
|
11/13/2004 09:43:05 AM · #6 |
Originally posted by Natator:
Hey hey :)
I am mid a studio lighting course, great stuff :)
A couple of the other people (which makes it 50% of the course *laugh* came across a problem when we first got to play with out cameras and the studio flashes.
The pre-flash was tripping the strobes, so they fired too early and their photo was thus taken in the dark.
Is there a way with a 300D and 420ex combination to stop the preflash firing completely? I can do it with my setup (20D & 580ex) but have no idea how to do it with their setup.
Anyone know the answer to this one? |
Only way to de activate the preflash is to set up the flash so that ONLY the trigger circuit is used (either by using a connection to the PC terminal, by using a generic hotshoe adapter or otherwise blocking the E-TTL contacts.
It might be easier to use the a "digital" slave for the studio flash packs. They will ignore the pre-flash and only trigger on the main flash.
Hope that helps. |
|
|
|
11/14/2004 12:02:16 AM · #7 |
That, I think, could be a solution for them there Spaz, using a generic hotshoe to "shelter" the 420ex fro e-ttl. Nice idea, I'll let people know if it works.
|
|
Home -
Challenges -
Community -
League -
Photos -
Cameras -
Lenses -
Learn -
Help -
Terms of Use -
Privacy -
Top ^
DPChallenge, and website content and design, Copyright © 2001-2025 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 09/17/2025 04:20:42 AM EDT.
