Скачать или смотреть Blacklight camera view testing

1. Speed build that is thinner and armor build that is wider are seen for both players on horizontal line. Player with wide armor can see player with thinner speed build, before speed build player sees him, because of exposed a bit of arm and leg.
2. Standing right next to corner wall, don't make you covered better. Your arm, leg and hands with gun are exposed. So to be less visible, take some steps backwards from the corner.
3. the person from below can see a player from above, while player from above may not even see his nickname. Additional stealth is granted for speed build, because of thinner body. Player from below standing next to stair corner, can shoot diagonally more unnoticed, or other elevation type. Example: standing next to left stair corner from below, makes player from below a lot unnoticed for a player from above from right side of corner above. While player from above peeks out to see a player from below, a big half of him is exposed. So diagonal positioning from below makes you more protected because of camera.
It works best when it's about a great angled elevation like stairs.

Hope this benchmarking will reduce your frustration of getting killed before you see your opponent before get shot. Now you may know the reason of your fail.

Play with geometry

I saw that some footage was not recorded at all. So I may repeat this hitbox benchmarking for more clear information.