To answer one part of your question, zoom lenses (‘telephoto’ lenses) are nothing new. Optics are an old and very precise science. Not to mention, a mechanical (ie; non-electronic, not just non-digital) camera is a very reliable and robust piece of equipment. I have one [these guys](https://static.bhphotovideo.com/explora/sites/default/files/styles/960/public/20730-topshot-product.jpg?itok=pvfLtCKS), and it’ll probably outlive my great-grandchildren.
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