Archives for 2017

This is the 20th in a series of posts on the Sony a9. The series starts here. Let’s take a look at the current draw for a complete power up to power save mode, with the power save timer set to 10 seconds: The vertical scale is about 200 ma/division. At the left, the camera… [Read More]

This is the 19th in a series of posts on the Sony a9. The series starts here. Yesterday, I reported some preliminary dc current drains for the a9 in several modes. Today I’m going to look at current draw as a function of time. When I did similar tests with the a7RII about six months… [Read More]

This is the 18th in a series of posts on the Sony a9. The series starts here. I did a camera heating test for the a9 with what I thought was a fairly heavy usage scenario and reported the results here. The rise over ambient looked like it was going to get to about 17… [Read More]

This is the 17th in a series of posts on the Sony a9. The series starts here. This post is more on the a9 read noise. I’ve got one thing that’s of interest to non-techies, then I’m going to wander off into the sensor-reverse-engineering thicket. The thing that might be of general interest is the… [Read More]

This is the 16th in a series of posts on the Sony a9. The series starts here. There have been reports of Sony a9s overheating. Mostly tales of warnings when you wouldn’t think there would be warnings, but some stories of actual shutdowns when the camera was being used for still photography. There is a… [Read More]