I want to be able to view who is at the door.
With my camera mounted outside... I have no trouble recognizing who is at the door. My camera is slightly overhead and about ten feet away. The camera also gives me a decent view of the driveway... so I might also see a car. I have installed a similar setup at my stepdaughters home and it works at least as well.
I am not sure what your intentions are. As for me.. whereas it is nice to have a heads up as to who is at the door.. my intentions are security related.
Just like security alarm signs and window stickers deter intrusions... I believe
so do outside mounted cameras. So besides the alarm and stickers and signs, solid door locks, and bunches of motion sensor lights at night... I have some easy to spot cameras outside. I also have cameras.. that aren't so easy to spot. And of course I also use BVC
and a motion activated voice warning
(both day and night now).
Of course... cameras are easy to defeat... by simply looking away. And if police don't show up in three minutes (or less) the alarm isn't going to help much ether. And the best steel door with the strongest bump-proof lock... doesn't prevent the old "throw the deck furniture through a window to gain entry trick
". For everything we do... the bad guys also have a defense. But with a little effort.. we can more than even the odds in our favor. And unless the would be intruder is a total idiot they will move on to our neighbors home.
Meanwhile we also get a peek at who is at the door when the doorbell rings.