Even though we ARE Nikon lovers,we are NOT affiliated with Nikon Corp. in any way.

English German French

Sign up Login
Home Forums Articles Galleries Recent Photos Contest Help Search News Workshops Shop Upgrade Membership Recommended
members
All members Wiki Contests Vouchers Apps Newsletter THE NIKONIAN™ Magazines Podcasts Fundraising

D300 plus 200-400 focus issues

elec164

US
2575 posts

Click to send email to this author Click to send private message to this author

"RE: D300 plus 200-400 focus issues"

elec164 Silver Member Nikonian since 15th Jan 2009
Fri 22-Jun-12 02:38 PM

In my opinion it is without question light (or lack thereof) combined with aperture.

The camera’s phase detection AF needs a certain amount of contrast to function. I had a similar experience not long ago using my bigma. It was around sundown and I noticed a rabbit eating on my neighbor’s lawn when returning from exercising with my dog. He seemed rather tolerant to our presence, so I ran in and got my camera that already had the 50-500 mounted. Wide open the bigma at 500mm is f/6.3 placing it at the upper end of performance for the phase detection AF. But I could reliably AF at that light level. As dusk approached AF began to become more and more variable until it got to a point where manual focus was required.

So my experience seems to be what you are describing, and that is as dusk approaches AF will become unreliable.

Pete

Pete

Visit my Nikonians gallery.

A general, generic topic D300 plus 200-400 focus issues [View all] , mtpeke Silver Member , Fri 22-Jun-12 07:14 AM
Subject
ID
Reply message RE: D300 plus 200-400 focus issues
1
Reply message RE: D300 plus 200-400 focus issues
2
     Reply message RE: D300 plus 200-400 focus issues
3