Back focus or motion blur.

Started 10 months ago | Discussions thread
brianric
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Re: Back focus or motion blur.
In reply to Full Frame, 10 months ago

Full Frame wrote:

j_photo wrote:

My guess is the camera focused on the wall, prior to the boy running in front of the indicated focus point. But there was insufficient time for refocus before the shot was taken.

If it's back focus, it looks like a pretty extreme case.

Thanks for all your input

With my D90 always used AF continuous mode at 4.5 fps for sports. Gunning it I knew I was going to get a few shots in focus. But in this situation was sitting 1 foot away from basket. The boy was running toward me. I thought that at that distance would have no problem as the subject should be large enough to acquire focus and was only about 8 feet away. When I shot an air show had no problems using single point as i had a large subject matter. Guess its a learning experience with the D800.

Don't understand why viewnx showed the focus spot that i used, yet the camera used a different point. It would appear that the camera knew that i was panning and switched to predictive/dynamic mode.

What mode were you in? The D800 doesn't switch to dynamic mode by itself. I have a feeling you were in AF-S mode.

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