Regular pictures taken with phones range from about 10Kb to a couple hundred Mbs but today I see a post about a picture of brain tissue with a file size in petabytes. I also know that some NASA pictures are very large(dunno why) but even that makes more sense than a zoomed in pic of brain tissue. Obviously the instruments used are different but why such a large difference.
In: Technology
You’re lumping a bunch of different things into “picture”. It’s like asking why some houses are so large, when you lump the Empire State Building in as a “house”, because there are some apartments in it.
Pictures takes by cameras are constrained by how many pixel circuits you can put on a sensor chip. But images can be composited from many separate camera exposures. Use the “panorama” feature of your smart phone for an example.
The brain image and the NASA images are examples of this. Many images were collected, combined together, colored in an interesting way, and that’s the giant file you’re looking at.
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