D4 & D800/E Potential Focus Priority Problems

Started Apr 28, 2012 | Discussions thread
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D4 & D800/E Potential Focus Priority Problems
Apr 28, 2012

There are several ongoing thread discussions concerning identified problems with the focus priority options in the D4. These same problems have been noted in discussions on other web sites, and at least a few people report similar problems in their D800s. Basically, the problem is that the focus priority release option in at least some D4s has no impact on shooting. That is, the shutter will release when images are totally defocused even when selecting focus priority for either AF-S or AF-C modes.

There are several easy ways to check this which I will not repeat here as they are discussed in other threads
(see http://forums.dpreview.com/forums/read.asp?forum=1021&message=41356973 or
or others in those threads).

Some have suggested that this is a "design feature" by Nikon, which is ludicrous given that the "feature" would be that choosing focus priority would have no impact on whether or not the shutter releases! Others have suggested this is a "minor problem". Well, its not minor for anyone who shoots anything other than totally static subjects.

So, if you have purchased a D4, D800, or D800E, I strongly suggest you check on the operation of the focus priority function now. So far it is not clear how generalized the problem is, or what the fix is. One user indicated that Nikon labeled it as a "major hardware repair". In any event, checking now will avoid wondering in the future why many more images than expected were OOF.
Michael E. Clark

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