I was anticipating such a comment and I agree its highly suspect with all the trail cams and mobile phone cameras that no decent photo or footage exists. Also I assume bigfoot 'hunting' is quite a common thing now i the states and still there is nothing to show for it.
That said...
If you aren't familiar with the dylatov incident (I highly recommend reading about this if you are interested ) it involves a group of Russian hikers were found dead with horrific injuries in highly perplexing circumstances in the 1950s Ural mountain region. The group had a camera with them and the second from last shot was this:
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which is probably one of the most chilling photos I have seen. Also the last entry of one of the hikers diary was 'the snowman lives' in reference to the yeti, before dying in the most strange circumstances.
Then there is the Patterson gimli film shot in 1967 California
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Granted both are quite old now but neither have been debunked in that time so that's two major pieces of evidence right there of such a beast caught on camera and film.