Monday, March 10, 2008
D300 problems start to appear?
Sunday evening after an afternoon of waterfowl photography on the Tama River. As you may notice in the upper photo, the birds were leaving at this time and so was I.
Unfortunately, I experienced an auto-focus failure with the D300. It stopped focusing with my Tamron 200-500mm while I was taking photos of an egret. First I noticed that the AE/L button suddenly started focusing my camera when I pushed it to lock exposure. I had turned off the auto-focus lock feature for this button in the menu. (It is possible that I accidentally hit the AF lock button)
Then the lens would try to focus---I could hear the motor---but nothing happened. I put in a fresh battery. Nothing. I removed and reattached the lens. Nothing. I put a Nikkor 18-70mm on and after failing for a few minutes it began to focus again. I tried with my Tokina 12-24 and it worked. I put the Tamron back on and it was working again.
There have been occasional reports on the internet of this problem. It doesn't seem to be widespread but it exists. I am hoping mine was just a one time fluke, but since I have been having a few other problems with it too, I wonder.