D300 won't focus, hunts in & out

moomike

moomike

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Hi all,

Right, I've just posted out my D300 to Puddleduck (please empty your PM inbox mate :thumbs:) & he's received it fine but the camera won't focus with his lenses - just keeps hunting sluggishly in & out.

I've asked him to check that the switch at the side is set fully to Automatic focus & that the contacts are clean. Have also suggested resetting the camera to just make sure. Focus is set to the AE/AF button on the back of the camera.

Before I get him to send the camera back & I kick off big time at Royal Mail can anyone think of anything I may have missed that could be the cause of this?


Cheers in advance to anyone that can help,

Mike :thumbs:
 
Is he using lenses with a small maximum aperture? Focussing effectiveness deteriorates below about f4... I had that problem with my D200 and the 18-200 zoom and it has happened on my D3 with a 500f4 and a 1.7TC in combination - the max aperture it could do was f6.something and it hunted back and forth on low contrast shots (was at an airshow).
 
Cheers Goggz, I know he has a good mix of lenses but with either high or low apertures the camera should still focus, I don't think it is at the moment at all.

I did think it may have been the focus priority option in the menu that prevents taking a shot until focus is obtained but if the camera is not focusing at all then it can't be that?

Cheers :thumbs:
 
Puddleduck knows his stuff. It he can't make it work, there's summat wrong :(
 
Yep, presumed as much. I can't even begin to express what I think of Royal Mail without the swear filter turning my post into a vast amount of asterix'

Andy, could you please PM me your number when you get a min, think I have found a fix for it :thumbs:
 
moomike said:
Yep, presumed as much. I can't even begin to express what I think of Royal Mail without the swear filter turning my post into a vast amount of asterix'

Andy, could you please PM me your number when you get a min, think I have found a fix for it :thumbs:
Click to expand...

Just out of interest, what have Royal Mail done? Dropped it from agreat height?
 
HoppyUK said:
Just out of interest, what have Royal Mail done? Dropped it from agreat height?
Click to expand...

At a guess, the tiny mirror behind the main one that directs light onto the AF sensor unit may have been damaged/knocked out of alignment due to rough handling.

I saw Andy yesterday as he was just about to go back to the office to pick up the D300 - that's a real bu**er.

Andy
 
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