I thought that I could get a bit of control of the DOF by using Av mode with my 580EX, but when I set it, even to something fairly wide open, the shutterspeed seems to get very long. Am I confused? Might I have something set incorrectly?
DwightMcCann so, what are we talking about?  21,402 posts Likes: 44 Joined Feb 2005 Location: Buellton, California, USA More info | Jun 09, 2005 18:05 | #1 I thought that I could get a bit of control of the DOF by using Av mode with my 580EX, but when I set it, even to something fairly wide open, the shutterspeed seems to get very long. Am I confused? Might I have something set incorrectly? Dwight McCann
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rent Senior Member 651 posts Likes: 39 Joined Mar 2005 Location: Irvine, CA More info | Jun 09, 2005 18:24 | #2 this is got to be one of the most frequently asked questions regarding flash. please check out the flash sticky. in short, the camera exposes for ambient light in the AV/TV/M modes so the presence of a flash does not affect the AE results. http://portfolio.alexjiang.com
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kong Member  144 posts Joined May 2004 Location: Brownsburg, IN More info | Jun 09, 2005 18:24 | #3 It is exposing for the background and the flash will correctly expose the subject. I'm assuming that your using this indoors? Your not confused, It's tricky.
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CyberDyneSystems Admin (type T-2000)  More info | Jun 09, 2005 18:27 | #4 Use manual mode to set BOTH the aperture and shutter where you want them.. simple as that GEAR LIST
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DwightMcCann THREAD STARTER so, what are we talking about? 21,402 posts Likes: 44 Joined Feb 2005 Location: Buellton, California, USA More info | Jun 09, 2005 18:30 | #5 My bad ... shoulda read the sticky, sigh. Dwight McCann
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lomond Goldmember  2,366 posts Joined Apr 2004 Location: Ayrshire, Scotland More info | Not bad ............... just led me to the sticky. Cameron........My Images
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Titus213 Cream of the Crop  More info | Jun 09, 2005 19:42 | #7 Hey, I'm glad to hear I'm not the only one struggling with flash. And I've read almost all the sticky already. It just goes in one ear and out the other. Tonight I stick a pencil in one ear and try it again. Maybe I'll retain enough to get a decent flash picture. Dave
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scottbergerphoto Cream of the Crop  5,429 posts Likes: 1 Joined Jun 2003 Location: Brooklyn, NY, USA More info | Titus213 wrote: It just goes in one ear and out the other. Tonight I stick a pencil in one ear and try it again. Maybe I'll retain enough to get a decent flash picture. One World, One Voice Against Terror,
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DwightMcCann THREAD STARTER so, what are we talking about? 21,402 posts Likes: 44 Joined Feb 2005 Location: Buellton, California, USA More info | Jun 09, 2005 21:26 | #9 Ya, well let me check what I think I know: if I used evaluative metering and program mode I get e-TTL ... and generally excellent images!? Now I will go read the sticky, sigh. Dwight McCann
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AjP Senior Member  813 posts Likes: 1 Joined Jun 2005 Location: DFW, US More info | I had same issue, the reason because E-TTL use slow sync in Av.Tv. M modes to proper expose background. so either use P or set everything manualy in M. "Photography takes an instant out of time, altering life by holding it still."
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