Notice also this formula from Valve for an 'optically correct perspective'
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viewer distance = (screenwidth)/(2*tan(FOV/2))
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I am practically GIVING you the answer at this point.
To allow you to use this formula, here is the general layout of my monitor/viewing distance. Note that this probably won't equal 23.5 degrees exactly, because I calculated in a much quicker and rougher way. But it'll demonstrate the point.
My monitor is approximately 100 cm away from my face. It's viewable area is 40 cm wide. This gives you all you need to solve that formula;
viewer distance = (screenwidth)/(2*tan(FOV/2))
100 cm = (40 cm) / (2*tan(FOV/2))
Solving algebraically comes up with, finally;
FOV = 22.61986494!
As you can see, according to Valve's 'optically correct perspective' formula, I would need to set my FOV to 22.6.
So what does that tell you about my problem?
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Originally Posted by Wolf_Rider
you see, your monitor is not your window... different physics
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Both follow the same optical principles apart from the angles at which the light comes, which can be corrected by fresnel lenses.
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Originally Posted by Wolf_Rider
nooo... if you move closer to your monitor, it gets bigger and if you move closer to you wnidow, you see more of the outside world through it.
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You do realise we are saying the same thing here?
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Originally Posted by Wolf_Rider
No again... you change how much you see, as the restriction of the window bounds reduce
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Which is an increase in the field of view OUTSIDE the window!
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Originally Posted by Wolf_Rider
Insert "restriction" for "FoV" here and this is what has been said before
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No I was talking about INGAME FOV there. Might have been confusing just saying 'fov', sorry.
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Originally Posted by Wolf_Rider
You might want to reconsider this bit in regard to your previous postings
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No, it was correct.
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Originally Posted by Wolf_Rider
you'll need a simpit
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No, i wont. I can achieve an optically correct perspective (aside from screen curvature) at ANY size screen and viewing distance. I just need to set the right FOV ingame.
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Originally Posted by Wolf_Rider
why keep harping, when it has been gone over and over?
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Because you apparently don't get it.
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Originally Posted by Wolf_Rider
they say "set to 75 degrees by default"
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Not for an 'optically correct perspective' they don't.
Remember that FOV in games is a TRADEOFF between WIDE angle views (that are still not as wide as in reality) and 1:1 perspective/detail, which suffers because obviously things get smaller and less detailed the wider the FOV.
Games have generally stuck with 70-90 fov for playability purposes. But this is NOT the optically correct perspective. The optically correct perspective is the one where perspective onscreen matches perspective in reality.