This is curious to me, wonder if someone can elaborate.  When I take pictures with my phone which takes some pretty stunning pics (Galaxy S10+), some pictures are very large size and file size like 8-10MB.

I will often take them and do some color editing in AE but when I render, even at the same resolution, the file size is dramatically smaller.

So, my question is, am I losing quality or are the renders simply more efficient?

Thanks
Eric