The previous page showed ad-hoc images using Nikon D800 autofocus under everday ad-hoc shooting conditions.
Many DSLRs from Canon and Nikon now have an “AF fine focus adjust” feature that can provide some benefits in centering the focus to be highly accurate on average.
The test scene is shown further below.
- AF-S mode using AF-S priority selection = Focus.
- The center focus bracket was centered squarely on the head of the figure at center.
- The tripod was locked down and a remote release was used, so there was no movement of the camera from shot to shot.
- The lens was manually defocused for each image, then the AF-On button was pressed to allow the camera to focus, then the exposure was made.
- I verified that the position of the focus sensor as indicated by the camera in the viewfinder is actually accurate (using the edge of walls and similar targets).
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