Is there a button cell inside the camera body that backs up settings

Started 5 months ago | Discussions thread
Distinctly Average Senior Member • Posts: 1,175
Re: Is there a button cell inside the camera body that backs up settings
2

Ray UK wrote:

If your camera has a button cell that is replaceable then it is usually located with a section of the main battery compartment. If it doesn't have this then it probably relies on a super-capacitor to retain a tiny bit of power to enable short term memory storage. The memory retention varies but a super-capacitor can supply the memory for days or weeks.

Or they can use NVram, then no power is required. That is certainly in use in many modern cameras. Obviously not for date and time, but for the rest of the settings

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