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EXCERPT page containing first few paragraphs. 2020-01-17 13:41:07

36-megapixel Nikon D810
Zeiss Milvus 100mm f/2M

Macro Examples: Shape of Out of Focus Specular Bokeh

Examples shot on the 36-megapixel Nikon D810, all handheld, using higher ISO when necessary.

This page explores the shape of out of focus specular blurs.

Lens diaphragms are not always perfectly symmetrical, and the symmetry can vary somewhat with each lens sample. The lens sample used here exhibits excellent diaphragm symmetry. Some degree of lens diaphragm asymmetry is “not a defect” according to Zeiss, but for the images shown on this page, anything less than near perfection is not going to look as attractive. Fortunately the nonagons are about as perfect as one can expect.

Camera Raw 9.6.1 (631) in Photoshop CC 2015.5. Ample liberty was taken with processing parameters, made possible by the very high sensor quality of the Nikon D810.

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Aperture series 2,2.8,4 available in full article
Specular Out of Focus Bokeh
f2 @ 1/6400 sec, ISO 64; 2016-08-24 08:59:28
NIKON D810 + Zeiss Milvus 100mm f/2M

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