The 580 EX II Ratio mode only works in ETTLII right? In other words if you set a ratio, it's all relatively based on what exposure ETTL determines for you? So in Manual mode, there is no "ratio" there is only what you set for each flash correct?
nicolasonline Junior Member 29 posts Joined Nov 2007 More info | Feb 19, 2008 10:50 | #1 The 580 EX II Ratio mode only works in ETTLII right? In other words if you set a ratio, it's all relatively based on what exposure ETTL determines for you? So in Manual mode, there is no "ratio" there is only what you set for each flash correct? Canon EOS 5D Mark II - EF 24-105 f4 L - EF 50 f1.4 - EF 100 f2.8 Macro - MacBook Pro
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CurtisN Master Flasher  19,129 posts Likes: 11 Joined Apr 2005 Location: Northern Illinois, US More info | Feb 19, 2008 11:02 | #2 You got it. "If you're not having fun, your pictures will reflect that." - Joe McNally
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PacAce Cream of the Crop  26,900 posts Likes: 40 Joined Feb 2003 Location: Keystone State, USA More info | Feb 19, 2008 11:09 | #3 nicolasonline wrote in post #4948982  The 580 EX II Ratio mode only works in ETTLII right? In other words if you set a ratio, it's all relatively based on what exposure ETTL determines for you? So in Manual mode, there is no "ratio" there is only what you set for each flash correct? Well, not necessarily. If you are controlling the power output of the slaves from the master (where the master is in Manual mode), the only way to do that is by using the Ratio feature. ...Leo
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So basically on the ST-E2 when it's set to ratio, you don't fully control your slaves unless you set the ratio on the slave. But what happens if on the ST-E2 you set the ratio to 3:1 and you set a different manual setting on each slave? Canon EOS 5D Mark II - EF 24-105 f4 L - EF 50 f1.4 - EF 100 f2.8 Macro - MacBook Pro
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PacAce Cream of the Crop 26,900 posts Likes: 40 Joined Feb 2003 Location: Keystone State, USA More info | Feb 19, 2008 13:01 | #5 nicolasonline wrote in post #4949479 So basically on the ST-E2 when it's set to ratio, you don't fully control your slaves unless you set the ratio on the slave. But what happens if on the ST-E2 you set the ratio to 3:1 and you set a different manual setting on each slave? The ST-E2 can only control the slaves in ETTL mode so, since it can't do manual, whatever I posted in my previous post does not apply to the ST-E2. If the slaves are set to ETTL mode also, the ST-E2 will control the ratios. But if the slaves are in manual mode, whatever power the slave are manually set to is what they'll fire at. And this is true even if the master is a flash like the 580EX. ...Leo
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Thank you so much for your help! Canon EOS 5D Mark II - EF 24-105 f4 L - EF 50 f1.4 - EF 100 f2.8 Macro - MacBook Pro
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TomCamilleri Senior Member 819 posts Likes: 14 Joined Jan 2005 Location: Long Island, NY More info | Feb 19, 2008 17:03 | #7 PacAce wrote in post #4949102 Well, not necessarily. If you are controlling the power output of the slaves from the master (where the master is in Manual mode), the only way to do that is by using the Ratio feature. Don't want to hijack the thread but I have a similar question. For manual and with 2 units can I have the master off camera, connected by a PC cord and have the master control the slave? 40D, Digital Rebel 300D; EF-S 17-55 f/2.8 IS, EF 28-135 IS, EF 50mm f/2.5 Compact Macro, 85mm f/1.8, 28mm f/1.8, Speedlite 380 EX, Sekonic L758DR w/target, Manfrotto 3021 w/3030 pan-tilt head & quick release plate, POTN Strap
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PacAce Cream of the Crop 26,900 posts Likes: 40 Joined Feb 2003 Location: Keystone State, USA More info | Feb 19, 2008 17:29 | #8 Tom Camilleri wrote in post #4951680 Don't want to hijack the thread but I have a similar question. For manual and with 2 units can I have the master off camera, connected by a PC cord and have the master control the slave? Yes, you can but you have to make sure that the master is in Manual mode. ...Leo
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joruiz Goldmember  1,619 posts Likes: 313 Joined Oct 2006 More info | Feb 19, 2008 18:14 | #9 Tom Camilleri wrote in post #4951680 Don't want to hijack the thread but I have a similar question. For manual and with 2 units can I have the master off camera, connected by a PC cord and have the master control the slave? That's what I do, but instead of a PC cord I use the cheap ebay trigger to trigger the 580EXII, which in turn triggers the 430EX slave. 580 must be in manual mode as pacAce said.. Cantisani
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TomCamilleri Senior Member 819 posts Likes: 14 Joined Jan 2005 Location: Long Island, NY More info | Feb 19, 2008 19:34 | #10 joruiz wrote in post #4952215 That's what I do, but instead of a PC cord I use the cheap ebay trigger to trigger the 580EXII, which in turn triggers the 430EX slave. 580 must be in manual mode as pacAce said.. Thanks. The trigger is an option I hadn't considered but might be more convenient than cord. 40D, Digital Rebel 300D; EF-S 17-55 f/2.8 IS, EF 28-135 IS, EF 50mm f/2.5 Compact Macro, 85mm f/1.8, 28mm f/1.8, Speedlite 380 EX, Sekonic L758DR w/target, Manfrotto 3021 w/3030 pan-tilt head & quick release plate, POTN Strap
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TomCamilleri Senior Member 819 posts Likes: 14 Joined Jan 2005 Location: Long Island, NY More info | Feb 19, 2008 19:35 | #11 PacAce wrote in post #4951865 Yes, you can but you have to make sure that the master is in Manual mode. This is just what I was hoping to do. Thanks for response. 40D, Digital Rebel 300D; EF-S 17-55 f/2.8 IS, EF 28-135 IS, EF 50mm f/2.5 Compact Macro, 85mm f/1.8, 28mm f/1.8, Speedlite 380 EX, Sekonic L758DR w/target, Manfrotto 3021 w/3030 pan-tilt head & quick release plate, POTN Strap
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Polekat Member  66 posts Joined Mar 2007 More info | Feb 19, 2008 20:06 | #12 My shiny new 580 EX II arrived today. A little gift for myself paid for by my tax return. Anyway, at first glance it looks like you need a masters degree to use the thing. Just learning the ropes. My equipment:
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TomCamilleri Senior Member 819 posts Likes: 14 Joined Jan 2005 Location: Long Island, NY More info | Feb 20, 2008 01:03 | #13 PacAce wrote in post #4951865 Yes, you can but you have to make sure that the master is in Manual mode. Can the master and slave be manually fired together from the master unit so output can be metered? 40D, Digital Rebel 300D; EF-S 17-55 f/2.8 IS, EF 28-135 IS, EF 50mm f/2.5 Compact Macro, 85mm f/1.8, 28mm f/1.8, Speedlite 380 EX, Sekonic L758DR w/target, Manfrotto 3021 w/3030 pan-tilt head & quick release plate, POTN Strap
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Lotto Goldmember  2,750 posts Likes: 192 Joined Mar 2005 Location: Southern California More info | Feb 20, 2008 03:33 | #14 Tom Camilleri wrote in post #4954793 Can the master and slave be manually fired together from the master unit so output can be metered? Yes they can if the master unit is also in manual mode. 5D, 24-105L, 70-200L IS, 85mm Art, Godox
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PacAce Cream of the Crop 26,900 posts Likes: 40 Joined Feb 2003 Location: Keystone State, USA More info | Feb 20, 2008 08:46 | #15 Tom Camilleri wrote in post #4954793 Can the master and slave be manually fired together from the master unit so output can be metered? Lotto wrote in post #4955193 Yes they can if the master unit is also in manual mode. Forgot to mention this earlier but be sure to set the shutter speed on the camera and the meter to 1/125 or slower if using a PC cord or even a wireless trigger. ...Leo
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