The analogy is flawed.
We are not asking for a photo of a panther falling from a sun visor. Any part of the Australian bush will do,
If you can produce a photo of a panther in the Australian bush as clear as this photo, I will probably be convinced.
https://www.aulro.com/afvb/images/im...013/08/842.jpg
There are further problems with your analogy. In the case of the other things you mention that some people have not seen, there is an enormous body of credible evidence that they exist, so most people accept their existence.
EDIT:
I will have to learn to type faster. Others have already pointed out the flaws in your analogy. Since the flaws are so obvious, I should have realised that there would be a number of very quick responses
