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05/27/2008 04:54:43 PM · #1 |
I started a studio lighting class in April, and we have been working with shooting thorugh Umbrellas and White Lightning Ligths triggered by pocket wizards. It all goes well!
Now, I have been given the opportunity to shoot in another studio free of charge to practice and initiate a little business. I have been using the STE-2 with my 580EX and all goes well, but I really want to make use of the studio lights available to me. However, when I add them to my combination, things get really bad....WAY underexposed as if the flash didn't fire at all. My STE-2 is firing my flash which triggers the White Lightening as a slave. Am I getting bad result becaues if misfires, delayed sync with flash? Any suggestions before I decide to get on the phone with Canon?
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05/27/2008 04:59:43 PM · #2 |
| Why not try putting the 580EX on the camera hot shoe (while pointing the 580EX head backards) and try setting of the WLs that way. Take the STE2 out of the equation to see if it makes a difference. If it does, then you know the answer. If not, you have eliminated a possibility. |
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05/27/2008 05:10:38 PM · #3 |
It might be the preflash that's triggering your strobe.
Canon flashes fire a preflash before the shutter opens to measure the light needed. This preflash can make people blink before the shutter opens, it can also trigger your strobes to fire early.
IIRC, you can turn this off by changing the mode on the flashes to TTL instead of eTTL. |
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05/27/2008 05:15:24 PM · #4 |
Originally posted by //photonotes.org/articles/eos-flash/:
There are times when TTL metering may be more desirable than E-TTL. A common example is a studio setting where analogue optical slave units can be fooled by the E-TTL preflash. The 550EX, 580EX, 580EX II, MR-14EX and MT-24EX let you disable E-TTL via a custom function, but theyĆ¢re the only Canon Speedlites with this ability. All other EX flash units (220EX, 380EX, 420EX, 430EX) will always operate in E-TTL mode when mounted to an E-TTL-capable camera, even if the camera is also capable of supporting TTL and even though theyĆ¢ll work in TTL mode just fine on a type B camera. (though the 430EX can also be used in manual mode if you wish)
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05/27/2008 08:38:36 PM · #5 |
It sounds to me like Nullix hit the nail on the head. The preflash is triggering the strobe too soon. I suggest connecting the studio strobe directly to the camera and not using the 580EX at all. After all, what's the point of using the relatively harsh light from an on-camera flash when you have studio strobes available?
To connect your 350D directly to a strobe, you will need a Hot Shoe Adapter.
Mick
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05/27/2008 09:26:06 PM · #6 |
I think you can put the flash on teh camera on manual and it won't preflash (580 or built in flash). Go for a low power or bounce the flash - you'll still be adding light to the room which may affect your overall light setup.
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05/28/2008 09:34:57 AM · #7 |
"I think you can put the flash on teh camera on manual and it won't preflash (580 or built in flash)."
I think I had tried this because that is how the photographer shoots who owns the studio, but he is a Nikon user...don't know what difference that would make. I don't think it made a difference, but perhaps the TTL ETTL settings will make a difference. However, I have taken my flash out of the equation too and just used the STE2, and it does fire the WL's, but again, underexposed. I will be back in the studio today so I will be happy to get some test shots to post.
If the 580EX is fired as a slave, it doesn't seem to allow me to change from ETTL. Does that make sense?
Oh...and I have tried the hotshoe adapter, but again from a Nikon user even though I don't think that really makes a difference. And...it has a bad connection to it. I have to hold it with my hand as I snap...too much effort when shooting kids!! I just might order one and give it a try!! Thanks for that tip!
Message edited by author 2008-05-28 09:36:25.
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