I had Canons and Nikon DSLRs and lately a mirrorless Panasonic micro 3/4 and this always bugged me:
How come these camera batteries die within hours while only snapping a few pics here and there, while my iPhone (and I heard many androids are even better) last a full day (or more) doing a lot more processing intense tasks (watching HD videos, taking pictures, browsing the net, etc)
I have to carry 3-4 extra batteries when taking my “big” camera out for a hike and I’m not even shooting insane amounts of pictures.
In: 4
The batteries in cameras are the same technology as used in phones. They could make them larger for longer life but this makes the cameras less convenient. It’s easier to have heavy users carry extra batteries or use external battery packs than to disadvantage casual users who only take a few shots per day.
These camera use a lot of power with their large sensors, image processing, operating shutter, focus and stabilisation mechanisms, writing data quickly to flash storage, displays, etc.
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