This is a continuation in a series of posts on power consumption in the Sony a7RII. The more recent incarnation of the series starts here.
I’m getting ready to wrap up this series of tests of the Sony a7RII battery current drain. I’m pretty sure I’m going to be using the techniques I’ve developed for other tests such as autofocus performance, but I’ve reached the end of what I think is useful to discover about the battery drain per se.
In this post, I’ll list the important things that I’ve discovered, and link to posts with more detail on each. I will try to keep this qualitative. For those of you who like graphs and numbers, there are plenty of both in the linked-to posts.
When turned off, the a7RII will drain a fully charged battery in about a month.
Firmware 3.3 uses more power during focus acquisition than Firmware 2.0.
Whether using the EVF or using the LCD uses more power depends on the shooting circumstances. Here are some numbers.
Fortunately, the amount of power consumed by IBIS, OSS, and focusing is small compared to reading the sensor and refreshing the display.
Thanks.
Do you anticipate doing tests like these for your Nikon camera(s)? (of only academic interest to this Canon semi-defector).
I did look into doing it for the D5. It appears that there are parts available that can be taken apart and used to do the same kind of thing. However, my motivation is not high because the D5 has such incredible battery life. It would only be interesting if there were some internal working (like AF speed) that I wanted to observe with this method.
Jim
Nice summary Jim.
You’re getting better and better at boiling down your data to where us mortals can make use of it.
The pleasure of finding things out….