I interrupt the a9 experiments to bring you a special report on the new firmware release for the a7RII: 4.0. There have been several rumors floating around in cyber-space: The star-eating at exposures of 4 seconds and longer is fixed. The star eating is not fixed The star-eating is worse. The star-eating is now a… [Read More]
Worst-case Sony a9 self heating
This is the 23rd in a series of posts on the Sony a9. The series starts here. In this post, I tested a fairly severe a9 use case and found: A rise over ambient looked like it was going to get to about 17 or 18 degrees C above ambient. A time constant of about… [Read More]
Worst-case Sony a9 battery draw
This is the 22nd in a series of posts on the Sony a9. The series starts here. I set the integration time on the DMM as high as it would go and went in search of the worst-case battery drain conditions. I couldn’t find any mode that cause sustained drains of over an ampere. The… [Read More]
Sony a9 battery drain vs display mode
This is the 21st in a series of posts on the Sony a9. The series starts here. I’ve had some questions about how the display mode on the a9 affects the drain on the battery. In the a9, as in the a7x cameras, there are 3 display modes. The default mode is for the camera… [Read More]
More on Sony a9 battery draw
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]
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