D90 AF-A/AF-S Problem?

dan_yorkshire

dan_yorkshire

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Hi guys,

There is probably something really simple to solve this but its doing my head in.

If the camera is in AF-A or AF-S mode, even when I lock focus, the camera wont allow me to take the shot, its only letting me take photos in AF-C mode.....

Anyone any ideas?

Dan
 
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Anyone? This is doing my head in... doh!
 
No specific answer to that but it might help if you do a reset back to original settings.

A couple of other things to check.......Is the image clicking into focus? I ask because the camera needs the image to be in focus before it will take a picture. Also, have you tried switching the lens to manual focus to see if it works?

Might laso have a read of the handbook to see what conditions block out picture taking.

Others might have better suggestions........


Ernie
 
dan_yorkshire said:
Hi guys,

There is probably something really simple to solve this but its doing my head in.

If the camera is in AF-A or AF-S mode, even when I lock focus, the camera wont allow me to take the shot, its only letting me take photos in AF-C mode.....

Anyone any ideas?

Dan
Click to expand...

Under the autofocus menu (options a1 and a2 if it was unchanged going to the D7000) there should be AF-C and AF-S priority selection. Set these to release priority and the camera will never lock the shutter due to focus. It shouldn't lock when the camera believes it has locked focus, but there are a few situations where the camera thinks it hasn't got focus when it does.
 
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Cheers, will have another look tonight, although fairly certain I have already tried resetting the camera.

Dan
 
Disregard what I posted earlier. I looked in the online manual to see which option it was - turns out the focus/release priority choice is something that was added to the D7000 and not the D90 :bang:

When you say the camera has locked focus, are you seeing the green focus confirmation dot light up?
 
It sounds to me that even though the lens is going through the motions of focusing (it is actually focusing, isn't it?), the camera doesn't think that it is in focus. The green dot at the far left of the viewfinder info indicates that the camera has locked on focus. If this is lit then the camera should fire. AF-C will allow the camera to fire regardless of focus lock.

First thing I'd try is a different lens. If this doesn't work try the two button reset as somebody has already mentioned. Finally remove the battery and leave the camera for a couple of minutes - I've had to do this a couple of times to restore my D90 back to sanity.

If none of the above resolves the problem then a trip to the service centre is probably in order.
 
I have had this before but only on a tamron lens. If i switched it to manual focus it would fire, or if i turned the camera off and back on it would work fine.

As i said i only ever had this on my tamron lens. Its never happened on my nikon or sigma lenses i assumed it may have been an issue with the lens.

I no its not an direct answer for you but just letting you no you are not alone ;)
 
Hi all,

Problem solved, I don't really know what the problem was though.

It started when using my Tamron 17-50 lens when I switched to AF-S and the only way I could get it to fire was through liveview.

It was definitely focusing, the green light in the viewfinder would show and I even turned that annoying focus beep back on to confirm, this problem stayed no matter what lens I used.

Tonight I did a reset which didn't stop it but a battery removal and then a reset did... Best keep my eye on it but I nearly always shoot in AF-C with back button focusing!

Cheers for the replies everyone!
 
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