boblug wrote:
I'm not so sure now Steve.
If you read the words literally from the following excerpts from focus modes:
Dynamic - The focus point is selected manually. The camera focuses on the subject in the selected focus point when autofocus is initiated, but if the subject later leaves the selected point for brief periods, the camera will focus based on information from surrounding points (the edges of the area surrounding the selected focus point are shown by small dots, but all 9, 25, 72, or 153 focus points in the area are used for focus)
Then 3D tracking - The initial focus point is selected manually. While the shutter-release button is pressed halfway, the camera uses color information to track subjects that leave the selected focus point and selects new focus points as required.
The difference is the use of the word track. It does not mention that in the dynamic mode just saying a surrounding point will be used but not related to the original which intimates complete refocus.
Annoying I agree, but my personal expectation is that dynamic is a safety net for moving off selected focus point and keeping original target.
The descriptions for dynamic af and 3d af are worded "exactly" the same in both the d800 and d500 manuals. 3d af behaves similarly both cameras, yet dynamic af behaves drastically different in the two cameras. So either dynamic af is broken, or Nikon decided to radically change how it works without letting us know.
Mar 15, 2017 at 09:08 AM
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