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- 15:29, 23 March 2021 diff hist +19 Entrance Pupil Database
- 15:29, 23 March 2021 diff hist +2 m Entrance Pupil Database Sigma DP0 update, I'm original author, and I measured it from back of the camera, not from sensor mark, also I fixed 2mm error.
- 18:56, 13 October 2015 diff hist +48 Entrance Pupil Database
- 15:04, 10 July 2013 diff hist +3 Entrance Pupil Database →Entrance Pupil Measurements
- 17:00, 13 March 2013 diff hist +95 Entrance Pupil Database →Entrance Pupil Measurements
- 16:56, 13 March 2013 diff hist +134 Entrance Pupil Database →Tripod Mount Measurements