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The default optical offset, with the focus position used for the live view and for autofocus
set at the core of the near refocusable range
Depending on the style of photography and the subjects being shot, it may be
advantageous to relocate the optical offset position. As an example, when
shooting landscapes, set the optical offset to the core of the far refocusable
range. Then, when composing a shot by focusing on a distant object, most of the
refocusable range would be available for closer objects.
An adjusted optical offset position that might be used for landscape photography.