Commonly, there is a button battery in a camera to keep some settings such as date and time..
They contain Lithium
These batteries can contain silver oxide, mercury, lithium, or cadmium are considered hazardous. Despose of them by returning them to the original dealer or by taking them to a recycling center.
To focus most digital cameras you need to push and hold the shutter button half way down. Then to take the picture you push it the full way.
Most cameras have a built in button for the ISO function. You can click on it and then change the number. If there's isn't a button you should check the different settings menus for that option.
yes there is a pause button on some cameras.
The SD models are more compact, always rectangular in shape, and are powered by proprietary lithium ion batteries. Their control buttons' layout is fairly simple, without complicated manual controls. The A models, which are descendants of the original "Digital Elph" series, generally have more manual adjustments available, are not always perfectly rectangular in shape (but sometimes they are), are more complicated in button layouts, and sometimes, but not always, are powered by ordinary AA batteries.
On a digital camera, there is usually a knob on the top of the camera. On Panasonic cameras the zoom knob is around the shutter button. Left zooms out and right zooms in.
Lithium batteries are button type.
the place where the batteries go there is a tiny button.
Are you considering the purchase of some button batteries for an electronic item that you have? These are batteries that are exceptionally small and used for smaller electronics. Some of these batteries are harder to find, and you might want to go online and use the web to look for retailers that sell the batteries you are searching for.
There are several variations of button cell batteries. Some of these include the alkaline, Mercury, zinc-air, silver and lithium. Button cells battery types are each distinguished by a unique letter code.