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Sharpness and Zone of Focus

Sharpness loss by focusing or zone of sharp focus..

How To Get Peak Sharpness With Perfect Focus

Focusing is more complicated than it first appears..


Blog posts, reverse chronological

2017

2017-10-17 Nikon D850 Experience Report: AF Fine Tune, Focusing Precision, Accuracy with the Nikon 14-24mm f/2.8G + Focus Shift Behavior

2017-09-29 Nikon D850: Apparent Build Tolerance Error in Flange Focal Distance vs Optical Viewfinder, Causes Major Focus Error with Manual Focus Lenses and Focus Confirmation

2017-08-26 Nikon D850: AF Fine Tune Using Live View

2016

2016-04-24 Nikon D5 + AF-S 85/1.4G Autofocus at Moderate Outdoor Distance

2012

2012-06-02 Reader Comments: Nikon D800 Autofocus, Pentaprism Blur

2012-04-12 Nikon D800 AF-S Autofocus Accuracy with Nikon 85mm f/1.4G

2012-04-10 Nikon D800 Autofocus Accuracy

2011

2011-01-03 A study with AF fine focus adjust on the Nikon D3x and Nikon AF-S 35mm f/1.4G

2010

2010-05-06 Nikon 24mm f/1.4G awful focus accuracy issues MORE

2010-05-06 Nikon 24mm f/1.4G focus accuracy issues

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