I use BBF with 1 shot all the time. It allows me to focus/recompose without fear fear of accidentally refocusing. Separating the fumctions has more than one benefit.
POLL: "Do you use back button focus?" |
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gonzogolf dumb remark memorialized More info | Dec 09, 2015 19:44 | #76 I use BBF with 1 shot all the time. It allows me to focus/recompose without fear fear of accidentally refocusing. Separating the fumctions has more than one benefit.
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Dec 09, 2015 20:32 | #77 gonzogolf wrote in post #17813239 ![]() I use BBF with 1 shot all the time. It allows me to focus/recompose without fear fear of accidentally refocusing. Separating the fumctions has more than one benefit. Same here!
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mannetti21 Goldmember ![]() More info Post edited over 5 years ago by mannetti21. | Dec 09, 2015 21:01 | #78 I forced myself to switch to back-button AF about 6 months ago. I finally switched back a couple weeks ago. For me, it just seemed to add an unnecessary step to a simple process. If you are shooting sports or birds, then I can see the usefulness. ---------------
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CyberDyneSystems Admin (type T-2000) ![]() More info | Dec 09, 2015 22:03 | #79 don1163 wrote in post #17813074 ![]() When I changed to back button focus the trouble I had was that I kept pressing the AEL button by mistake as it is close to the AF button...I now have both the AF button and the AEL button set to focus so it doesn't matter if I press the wrong one ![]()
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n1as Goldmember 2,330 posts Likes: 25 Joined Oct 2007 Location: Salem, OR More info | Dec 10, 2015 14:07 | #80 Does the camera AF stationary objects as accurately when momentarily focusing in servo as it does in one-shot? The idea that BBF allows both one-shot and servo just by holding (or not) the BB assumes that momentary servo performance equals one-shot. I did some experiments a few years ago and seem to recall that one-shot performed better on stationary objects than servo did. - Keith
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don1163 Goldmember ![]() More info | From what I've read single shot is better for stationary subjects but I haven't conducted any tests myself...I'm sure someone who has will reply, as I would also like to know... 1DX, 500L f4, 70-200L f2.8II, 100L f2.8 macro ,16-35 f4, 1.4xIII, Metz 64-AF1
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don1163 Goldmember ![]() More info | Dec 10, 2015 14:30 | #82 n1as wrote in post #17814156 ![]() Does the camera AF stationary objects as accurately when momentarily focusing in servo as it does in one-shot? The idea that BBF allows both one-shot and servo just by holding (or not) the BB assumes that momentary servo performance equals one-shot. I did some experiments a few years ago and seem to recall that one-shot performed better on stationary objects than servo did. This article explains it pretty well http://www.canonrumors.com/forum/index.php?topic=20182.0 1DX, 500L f4, 70-200L f2.8II, 100L f2.8 macro ,16-35 f4, 1.4xIII, Metz 64-AF1
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Trvlr323 Goldmember ![]() 3,297 posts Likes: 1091 Joined Apr 2007 More info | Dec 10, 2015 14:31 | #83 n1as wrote in post #17814156 ![]() Does the camera AF stationary objects as accurately when momentarily focusing in servo as it does in one-shot? The idea that BBF allows both one-shot and servo just by holding (or not) the BB assumes that momentary servo performance equals one-shot. I did some experiments a few years ago and seem to recall that one-shot performed better on stationary objects than servo did. don1163 wrote in post #17814164 ![]() From what I've read single shot is better for stationary subjects but I haven't conducted any tests myself...I'm sure someone who has will reply, as I would also like to know... I've read this over the years and honestly I can't either way. I've never taken the time to do a side by side comparison. I started using BBF exclusively in AI Servo mode close to 10 years ago and I never noticed any difference in my keeper rate. For my purpose the benefits of BBF far outweigh the odd missed focus, even if that is a real issue. On a purely logical level if AI servo can nail focus on a fast moving, erratic subject it does't really seem that much of a stretch for it to be able to nail focus on a stationary subject. Sometimes not taking a photograph can be as problematic as taking one. - Alex Webb
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CyberDyneSystems Admin (type T-2000) ![]() More info | Dec 10, 2015 15:11 | #84 I suppose think it depends on the camera, but a 1D in AI Servo pretty much tends to nail AF just fine. Never really had much need for single shot unless the situation called for a different approach. GEAR LIST
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Dec 10, 2015 15:43 | #85 I balked at first, just could not perceive any possible "benefit". Then I did it, that was about 18 months ago, and haven't ever looked back. Canon 5DS-R
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RichSoansPhotos Cream of the Crop 5,981 posts Likes: 39 Joined Aug 2007 Location: London, UK More info | Dec 10, 2015 15:51 | #86 ![]() urbanfreestyle wrote in post #17804831 ![]() Just wondering how many people on here use back button focus on their camera? I have never used it before but seen a lot of videos from people saying it is the way forward!? So do you or don't you and why / why not? Don't think anyone can say "It's the way forward", it depends on the application of what you use your photography for. Some use manual focus, some use shutter release button
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BigAl007 Cream of the Crop ![]() 8,059 posts Gallery: 549 photos Best ofs: 1 Likes: 1645 Joined Dec 2010 Location: Repps cum Bastwick, Gt Yarmouth, Norfolk, UK. More info Post edited over 5 years ago by BigAl007. | Dec 11, 2015 09:34 | #87 I never quite got why the manufacturers made lenses with Full Time Manual focus abilities. if the camera will insist on refocusing every time you take your finger off the shutter button, what point does it have. I have only just recently got a lens that offers FTM, and even though I have used BBF ever since I have had a camera that offered BBF (I shot for about seven years with a 300D, so no BBF available, even with the hacked firmware). It is only thinking about things reading this thread that the lightbulb moment happened. BBF allows you to use AF AND FTM to make manual adjustments as part of the same process. My Flickr
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Luckless Goldmember 3,064 posts Likes: 189 Joined Mar 2012 Location: PEI, Canada More info | The only time I've really used the full time manual focus ability on any of my lenses is to nudge focus while AF is struggling, and find it especially useful on my Sigma 150-500 from time to time when shooting in an environment with tons of contrast as a wide range of distances. (Such a shooting from within tall grass across a pond with a stand of trees in the background.) Canon EOS 7D | EF 28 f/1.8 | EF 85 f/1.8 | EF 70-200 f/4L | EF-S 17-55 | Sigma 150-500
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Preeb Goldmember ![]() More info | Dec 23, 2015 10:37 | #89 AZGeorge wrote in post #17805779 ![]() I've used BBF for year because, for me, it works as an easy way to mentally and physically separate the decision of focus from exposure and composition. This is why I do it. I don't like focus and exposure both tied to the same control. I think that comes from starting out as photography hobbyist in the 1970's with a completely manual SLR, and preferring to mimic that with my 60D. I do use AF because it works better than my aging eyes, but otherwise I shoot in manual with BBF. Tom Reichner wrote in post #17813229 ![]() Well, yes, of course you, or anyone, would be using AI Servo in that scenario. . That is what back button focus is all about, using BBF with AI Servo. . I have never heard of anyone using BBF with one-shot mode (although I'm sure someone has done it at some point in time). . It's pretty much assumed that when someone mentions BBF that they are doing it in conjunction with AI Servo. n1as wrote in post #17814156 ![]() Does the camera AF stationary objects as accurately when momentarily focusing in servo as it does in one-shot? The idea that BBF allows both one-shot and servo just by holding (or not) the BB assumes that momentary servo performance equals one-shot. I did some experiments a few years ago and seem to recall that one-shot performed better on stationary objects than servo did. don1163 wrote in post #17814164 ![]() From what I've read single shot is better for stationary subjects but I haven't conducted any tests myself...I'm sure someone who has will reply, as I would also like to know... I use BBF both ways. Servo works great on moving subjects, but I've had some issues in the past with missing focus on still subjects. Maybe operator error, maybe doing something not quite correctly in servo. I don't know, but when I'm doing landscapes, I use one shot, aimed at the point that works for the scene, then I don't touch the button again. Rick
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GregDunn Goldmember ![]() 1,289 posts Likes: 130 Joined Mar 2013 Location: Indiana More info | Dec 23, 2015 12:10 | #90 I've never seen an effective issue with Servo vs. One Shot and BBAF. I think a much bigger issue is getting used to the camera's AF performance and knowing (1) the timing of getting/tracking focus when you press the button and (2) the size/shape of the AF point so you can get it accurately on the subject. Once I am comfortable with a camera's behavior it doesn't seem to matter to me. It's so handy to be able to stop/restart focusing on a moving group of subjects and lightly hold pressure on the release while waiting for the right composition, that I don't think I could effectively use the all-in-one shutter release AF mode any more. Canon 1Dx | 5D3 | 7D2 | 6D | 70-200L f/2.8IS | 70-200L f/4 | 24-70L f/2.8 | 24-105L f/4IS | 100-400L f/4.5-5.6IS | 17-55 f/2.8IS | 50 f/1.8 | 28-105 f/3.5-4.5 | 4x Godox AD360
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