What is the reason for "AF-ON" button for? How does it differ from the " * " button?
Southswede Senior Member 951 posts Likes: 1 Joined Nov 2004 More info | Aug 27, 2007 13:39 | #1 What is the reason for "AF-ON" button for? How does it differ from the " * " button?
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Jon Cream of the Crop  69,628 posts Likes: 227 Joined Jun 2004 Location: Bethesda, MD USA More info | Aug 27, 2007 13:45 | #2 Basically, it's to eliminate the need for setting CF 4-1. IIRC it's re-programmable to a couple of other functions though. Jon
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TheHardcard Senior Member 578 posts Joined Jun 2005 More info | Aug 27, 2007 13:45 | #3 The * button is the exposure lock button, which can be turned into a focus button on previous cameras. The AF-ON button will do essentially the same thing while letting the exposure lock button handle exposures. Sweet new gear for a photogenic new year!
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Aug 27, 2007 15:37 | #4 Ok thank you.
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pagnamenta Senior Member 787 posts Likes: 1 Joined Jan 2007 More info | Aug 27, 2007 15:52 | #5 I personally like the location of the AF-ON button. While it might seems like very little difference, when I'm holding the body my thumb naturally falls to the spot Canon's placed the AF On button. Not that it's worth the upgrade just for the button.... Canon 1D3, Sigma 70-200 f2.8, Sigma 120-300 f2.8 (sale), 1.4x converter, 580EX.
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greg20d Typo King  1,972 posts Likes: 2 Joined Sep 2005 Location: Stockton California More info | Aug 27, 2007 15:55 | #6 The Hardcard wrote in post #3806763  The * button is the exposure lock button, which can be turned into a focus button on previous cameras. The AF-ON button will do essentially the same thing while letting the exposure lock button handle exposures. I would know that if I read my manual.....lol 40D,10d,G10,70-200Lf4is,17-55is
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tiktaalik Goldmember  1,213 posts Joined Feb 2006 Location: Southern California More info | Aug 27, 2007 15:59 | #7 Does it work like CF 4-1 in that depressing the shutter button won't focus? Julie
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dmwphoto Senior Member  460 posts Joined Jul 2007 Location: Richmond, Va More info | Aug 27, 2007 16:00 | #8 tiktaalik wrote in post #3807592 Does it work like CF 4-1 in that depressing the shutter button won't focus? yes that should be correct Dave Watts
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bildeb0rg Goldmember  More info | Aug 27, 2007 16:01 | #9 pagnamenta wrote in post #3807532 I personally like the location of the AF-ON button. While it might seems like very little difference, when I'm holding the body my thumb naturally falls to the spot Canon's placed the AF On button. Not that it's worth the upgrade just for the button.... I switch mine depending on whether I'm wearing gloves or not. The "*" button is a lot easier to locate for some reason...
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PacAce Cream of the Crop  26,900 posts Likes: 40 Joined Feb 2003 Location: Keystone State, USA More info | Aug 27, 2007 16:17 | #10 tiktaalik wrote in post #3807592 Does it work like CF 4-1 in that depressing the shutter button won't focus? If it's set up anything like the Mark III, both the shutter button and the AF-ON button would allow you to focus unless you set the custom function so that the shutter button doesn't do focusing anymore. ...Leo
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tiktaalik Goldmember 1,213 posts Joined Feb 2006 Location: Southern California More info | Aug 27, 2007 17:44 | #11 PacAce wrote in post #3807714 If it's set up anything like the Mark III, both the shutter button and the AF-ON button would allow you to focus unless you set the custom function so that the shutter button doesn't do focusing anymore. Ah, that's what I would hope for. I wasn't too clear earlier, but I don't want the shutter button to ever do focusing. Julie
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jkoc Senior Member  375 posts Joined Mar 2007 More info | Aug 27, 2007 17:47 | #12 i like that button
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Grimm75 blissful obscurity  1,784 posts Likes: 2 Joined Apr 2007 Location: Suwanee, GA More info | Aug 27, 2007 21:09 | #13 |
racingsafetyman Member  220 posts Joined Jul 2006 Location: Northants, UK More info | Aug 28, 2007 07:45 | #14 Grimm75 wrote in post #3809712 Stupid question but this is the button that "locks" the focus on the 40D, right? Wish I had that on my 400D... You can certainly set-up a custom function on the 350D to have the * button act as focus lock, so I would expect the same from the 400D. Colin
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Grimm75 blissful obscurity 1,784 posts Likes: 2 Joined Apr 2007 Location: Suwanee, GA More info | Aug 28, 2007 12:30 | #15 |
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