IBM

I see where I was wrong I been calling the exposer locked , my thinking is back wards , all these years , I'm taking exposer for what I see as it is focus what I see you don't see the exposer until you see the picture. Live and learn so I mostly shoot continues focus and continues exposure. A that is mostly spray and pray ,

Gene51 Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)

Honest mistake. Often happens. No worries. But that is exposure, not exposer -

amfoto1 Loc: San Jose, Calif. USA

Probably the easiest thing to do is just make mental note of the exposure settings, switch the camera to manual mode and set them yourself. That should give the same result as using AE Lock.

I don't have a D750, am a bit surprised it doesn't have separate buttons for AF and AE Lock, like my Canon cameras do. Canon implemented the separate button for AF back in 2007, with the 40D.

But those of us who used a vertical/battery grips on our cameras still had to use the AE Lock button for AF and switch to manual, as described, with our 40D and 50D, because they didn't get around to updating the grip with the button until the 7D and 60D in 2009/2010.

Earlier Canon models had a Custom Function that could be set so that AE Lock was performed on every shot (with half-press of the shutter release button, when using BBF)... but that wasn't good to have set all the time. There are too many situations where AE Lock will cause incorrect exposure. Rather than going into the menu to change that Custom Function when I wanted AE Lock, so I just got in the habit of switching to manual mode, as described above.

IBM

Pushing the shutter in that case , there is no half push , you push it when you want to snap a picture, or push and hold to take as many shots of subject as you can get and don't forget your holding the BB down at same time trying to keep target in focus , it is easy to do as your not pushing one at a time , your holding thumb down on the BB , and holding index down on shutter , it's easer than patting your head
And rubbing your stomach with separate hands , try it you will never look back h

Jim Bob

Convenient use of that feature is forfeited when you use BBF.

IBM

Can someone explain why thay would want to lock exposer, when targeting a bird on the wing .that is what happens to me a lot a few years ago ,before I came across the BBF .I was using the shutter button for focus , I can't count the times I was on a flying bird and pushed the shutter and nothing happened , I couldn't take the picture because the focus wasn't perfect ,and the shutter locked up on me ,by the time it cleared it was to late . The bird was to far out , now with BBF on and camera set for continues focus ,and only single black dot spot metering . For all my shooting no mater what it's always set that way

BobHartung Loc: Bettendorf, IA

I think this camera may have a menu setting that can set the function of the shutter button to expose whether the subject is in focus or not. You can look at the comments in this link which is to a Fred Miranda site

Bunkershot Loc: Central Florida

Could not have said it better myself Steve...

oldtigger Loc: Roanoke Virginia-USA

the question is:
where in the frame will the exposure be located, not the focus. but the exposure?

Bunkershot Loc: Central Florida

Setting exposure in Manual Mode is not like using a focus point for the focus. Normally you will point the camera at your subject and set the exposure in the viewfinder. You can recompose at that point and the exposure will not change from where you set it. Take a look at your camera manual. You should find some discussion about Metering Modes, e.g. Spot, Matrix and Center Weighted. Unless I'm doing a closeup of a flower blossom, where I use Spot Metering, I usually go with Matrix Metering across the board. Hope this helps...

HelleGuy Loc: Boston

I set my exposure lock to hold when I half press shutter. Works well for me. Hope this helps.

IBM

How is that working for you , on BIF as there changing position ever wing flap , I use cf on every thing , but I also use BBF, on everything
It's the best for both worlds .if it's sitting on a stump not flying I just lift my thumb and take as many in focus snaps as I want, if it's flying I
Just hold my thumb down and take as many snaps or spray and pray as I want . Try that by locking your exposer every shot , it never worked for me , ??

via the lens Loc: Northern California, near Yosemite NP

One of the main reasons to use BBF is to be able to set the autofocus and the exposure separately. So, lets say I am shooting a waterfall with dark mountains. I cannot focus accurately on moving water so I move my focus indicator just to the side of the running water, which will then be on the dark mountain, and I press my BBF to set focus. What I need to do now, however, is to set my exposure on the brightest part of the moving water in order to get a correct exposure for this shot. BBF sets and leaves the focus set unless I hit it again, which I do not do in this case. What I do is move my autofocus indicator button (in shutter mode this button connects auto focus and exposure), which is set separately from auto focus in BBF, to the brightest part of the moving water and the exposure will be automatically corrected. At this point I might take a test shot to see if the exposure works and perhaps take the exposure down a stop or two if it is too bright. So, you don't really need to have a separate exposure button with BBF, at least not in this type of situation.

IBM

You are making it more complicated than it needs to be just set BBF with spot metering , take shot , if not right , take another shot put
Spot on a lighter patch or a darker patch , your not going to get a perfect whit spot and a perfect dark spot and a perfect middle tone
Unless you burn and Dodge, you can just make a few adjustments and pic the one you feel is the best , you can play around in photo shop if your good at that sort of thing .

HelleGuy Loc: Boston

I don't take BIF pics.. Poster was looking for ideas and I gave him one. Your set up sounds like it works and that's great. I glad you had some input on the subject.