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
All members Wiki Contests Vouchers Apps Newsletter THE NIKONIAN™ Magazines Podcasts Fundraising

26 posts

Click to send email to this author Click to send private message to this authorClick to send message via AOL IM

"Weird Autofocus"

philm35 Registered since 25th Jan 2004
Thu 21-Mar-13 11:57 PM

I have an old 24-120mm 3.5-5.6D Nikkor AF zoom that I bought during the film heyday to use with my N90s. It's still a great walking around lens, but it has a problem when mounted on my new D800.

When the lens is zoomed in to 100mm or greater, the autofocus "hunts" for the correct focus. The autofocus overshoots the focus point, backs off to undershoot it, and repeats the process several times until it settles in the right spot. Sometimes it never settles in the right spot, and just keeps cycling back and forth until I give up on it. At shorter focal lengths, the lens nails the focus instantly.

Here's the weird part... The lens focuses perfectly on my D300 and on my old N90s. And all other lenses (that I've tried) focus perfectly on my D800.

What's the deal?



A general, generic topic Weird Autofocus [View all] , philm35 , Thu 21-Mar-13 10:57 PM
Reply message RE: Weird Autofocus
Reply message RE: Weird Autofocus
Reply message RE: Weird Autofocus
     Reply message RE: Weird Autofocus
          Reply message RE: Weird Autofocus