I am always amazed when I note that the manufacturers of regular flash-light batteries managed to make AAA, AA, C, and D cells and by and large the products of any particular maker are fairly similar to the same class from another factory. Of course there can be a variation in the supplies - some have lots of electricity and some don't - also some leak and some don't. But generally an AA cell will fit in an AA holder no matter who made it.
Not so for Li-ion batteries. Each maker seems to have a different shape or size, and not just different from other firms - different from themslves. It is a rare and welcome thing for the developing line of new cameras to contain the same battery three years in a row.
A nightmare for the user? For the stockist? Wait until you consider what those batteries do inside the cameras...
The jpeg is pretty universal for most cameras. Take a jpeg and everything can read it from the storage device and show it on a screen. But there are limitations - even with the best jpeg cameras in the world, you can sometimes exceed the capabilities. RAW files are what you need. And then away you go on the chicken chase again as you try to get your new camera's files to open in your old computer program. Or find an update. Or find a new program. Or take to drink.
Some manufacturers have tried to institute a DNG file that will be universal but then lots of their competitors have not taken them up on it. Indeed sometimes there are computer crashes and problems but then that is one of the mysteries of the occident.
Occidents will happen...
