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

Autofocus - a question for the experts

mszak50

US
20 posts

Click to send email to this author Click to send private message to this author
mszak50 Registered since 01st Feb 2009
Sun 17-Jul-11 10:24 PM

I have this interesting autofocus behavior that I can reproduce at will with the D7000, but which does not reproduce with a D90.

1. Daylight, 85mm 1.8D, F2.8
2. about 4' to target
3. Target is a spyder lens focus calibration target
4. Single focus point - center selected
5. AF-S, focus priority

If I aim the focus point on the intersection of the black and white area, my focus is spot on, which is what I would expect.

If I move the focus point an inch up and to the left, to a 100% white area, the camera still locks on, but things are now front focused about an inch.

My D90 with the same lens won't lock onto the all white area. This is really handy, because then I know that I don't have the shot, and can do something right then and there to make sure I do get the shot.

With the D7000, I don't find out until I get home that I didn't get the shot, which is too late.

(BTW, I can also repro this with a Nikon 50mm 1.4D)




Visit my Nikonians gallery.

Subject
ID
Reply message RE: Autofocus - a question for the experts
1
Reply message RE: Autofocus - a question for the experts
2
Reply message RE: Autofocus - a question for the experts
3
Reply message RE: Autofocus - a question for the experts
4
Reply message RE: Autofocus - a question for the experts
5
     Reply message RE: Autofocus - a question for the experts
6
          Reply message RE: Autofocus - a question for the experts
7
Reply message RE: What you are describing is an AF limitation
8
Reply message RE: What you are describing is an AF limitation
10
     Reply message RE: What you are describing is an AF limitation
11
Reply message RE: Autofocus - a question for the experts
9
Reply message RE: Autofocus - a question for the experts
12

G