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John has: 3 articles
John Sadowsky

John Sadowsky

MohaveCraterAluvialFans

Rolling Shutter on a Planetary Scale

HiRise, the High-Resolution Imaging Science Experiment, is a camera on the Mars Reconnaissance Orbiter (MRO). HiRise is a project of the University of Arizona's Lunar...
John Sadowsky

John Sadowsky

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June 7, 2020

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17 minutes read


DR FeaturePhoto

Noise, ISO and Dynamic Range Explained

This article examines the noise characteristics of a modern digital camera. The primary spec used to specify the noise performance of a camera is Dynamic range (DR)....
John Sadowsky

John Sadowsky

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February 8, 2020

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22 minutes read


Figure

A Better Histogram

The photo-histogram is probably the most ubiquitous exposure tool in digital photography; that is, short light metering itself.  It has been with us more than...
John Sadowsky

John Sadowsky

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November 14, 2019

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13 minutes read