The Grumpy Old Astronomer's
SONY A7s Analysis

Page last updated December 9, 2017


October 17, 2017
My SONY A7s Analysis - Part 1
regarding the SONY "Star-Eater" software problem:


  • My analytic analysis of a new SONY A7s camera is available here in pdf form (right-click and save).

  • The two spreadsheets referenced in the document are available here and here (right-click and save).

  • Yes - new SONY A7s (not model 2) cameras suffer from the "Star-Eater" software problem

  • A complete description and a workaround until they fix the bug is described in the document

  • Background article


December 8, 2017
My SONY A7s Analysis - Part 2
regarding noise in the images that avoid the Star-Eater problem:


  • My analysis and conclusions regarding white "speckle" noise in SONY A7s images is available here in pdf form (right-click and save).




December 9, 2017
My SONY A7s Analysis - Part 3
regarding changing ISO values and final recommendations:


  • My analysis and conclusions regarding the set of cameras settings that will produce the best high-speed low noise A7s images is available here in pdf form (right-click and save).







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