To Hitman
There are 2 things: FOV by naked eye and distinguish ability by computer graphics vs real.
You MOD using 425 pixels to represent 57º (or 54.6º) FOV. But from a normal distance, 425 pixels only have 13.7º from player naked eye. (If you don't believe you may measure it youself by using rule). Which mean image is 4X small in player eyes than in captain eyes.
Then what I said is if I enlarge it 4X e.g. using 24X zoom level. So images are look same size from naked eye. But the distinguish ability by computer graphics is still low than real about 1.5X to 2X for pixels normally have a 2.5~3.1mm size not fine enough. Since this case in real is passed by a optical system not by naked eye. I think 1.5X is a good estimate. (Please check binoculars manual)
There are really some day you can get a better distinguish ability from computer graphics. I remember these old days play DOS game like B17 and Aces of the Pacific. The target is very very easy to locate (but very difficult to identify). But now day the SH3 screenshot may just look like a photo. I think it will be some difficult. Although I have to agree with you in particular case like periscope and SH3 lack water reflections my suggestion (e.g. 4X) may be some big. But I don't think it's too big.
Since you have the condition to test (and I don't have). I wish you can do some experiment to check in how much distance you can identify the ship and estimate AOB and compare with the game play. Thanks!
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