I'm not quite sure what you're asking here - focus and metering are separate functions - though with some links between them in some circumstances. It's entirely possible to select Matrix metering and Single-point AF at the same time - that's what I use most of the time
Larry, There have been posts that indicate the metering selector switch/knob on the D3/3S bodies can become faulty. When it does become faulty, the metering mode isn't actually changed when the switch is turned. I suggest you turn/jiggle the switch back and forth when you select the metering mode and then ensure the center button actually pops up and locks in place. I personally experienced this with my D3, but not my D3S.
Thanks I'll check that out. I'm in a lot of dust and mud too so that might aggravate that problem. I'll try to explain it a little better. When I have my focus selector switch in the middle selection not the spot focusing selection on the bottom selection the red square still shows up in the viewfinder like it is in spot focusing. it appears to be stuck in spot focus. But when I move it to the top selection it goes away. The last time I used it the spot focus indicator , red square, would appear and then go away when I had the selector in the center selection. I'm sorry for the lack of identifying terms. I'm away from the computer at the moment.
JL. Mine is doing the opposite thing the other post was talking about. It stays in spot focus when I switch to matrix. I think the top selection is average. The spot metering square goes away when I switch to average but it is on in both matrix and spot. thanks so much for the help.
The selected AF point is highlighted in the viewfinder when the AF-Area mode switch is in the bottom position (Single-point AF) or the centre position (Dynamic-area AF), but not with the switch in the top position (Auto-area AF).
Hi Larry. I feel as if maybe you're misunderstanding the function of this switch. I wanted to make it known that light metering and auto focus are two completely independent systems that do not influence one another. The switch I believe you are referring to is the metering mode selection switch, which affects the cameras determination of correct exposure, and has nothing to do with auto focus.
As for your particular problem, the (light) metering mode selection switch unfortunately goes bad on many D3's and D3S's. Mine is wacky sometimes as well, and I've heard of many other D3 and D3S owners having the same issue. It is rumored that this wide spread problem encouraged Nikon to completely omit this switch from the D4 model. Of course, I'm not sure if that's actually true or just coincidence. My guess is that it's coincidence.
I have heard of some users having the switch contacts cleaned by a service center, and this sometimes alleviating the problem. If that doesn't work, the switch may need to be completely replaced.
Although it doesn't actually fix the problem, and is basically a work around, my use of the metering modes doesn't require me to use the switch at all. I almost always use matrix metering so I've moved the switch to that position and have left it there. I've programmed my function button to activate spot metering, the only other metering mode that I use. I don't ever use center weighed metering. This way, the camera is always in matrix mode, and when I need to use spot metering, I simply hit my function button and I'm there.
I have found this to be much quicker than goofing with the switch anyway. I hope this helps.
Sat 08-Feb-14 01:06 PM | edited Sat 08-Feb-14 01:10 PM by mklass
Odd, I had a D3 and D3s for about 5 years between them and never had this issue. I'm not sure this is a problem with "many" D3's or D3's.
I think the OP is confusing the AF focus Point with the Spot Metering function. Even in Matrix Metering, the focus point will show up in your viewfinder. Inability to move it is usually attributable to locking the focus point, usually accidentally or forgetting that you did it in a previous session on purpose. (I've done this more than once.)