EXCERPT page containing first few paragraphs. 2018-10-21 17:25:58
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The Nikon D850 offers a focus stepping feature, which Nikon calls optical focus shift., an extraordinarily poor choice of terminology, given given the confusion it will cause with
Focus stepping automates the taking of a specified number of images based on a several factors that control the step width. The resulting images are ideal for focus stacking. In fact they are better suited to focus stacking that what I can do manually because the images are (a) taken as rapidly as possible thus minimizing changes in the scene and saving time, and (b) there is much less chance of an error in making a step too wide as I’ve done on more than one occasion with manually focusing for focus stacking.
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