Re: [Flightgear-devel] FOV: Explanation?

[Heiko S. <aei...@ya...>]

--- Arnt Karlsen <ar...@c2...> schrieb am Mo, 1.9.2008:

> Von: Arnt Karlsen <ar...@c2...>
> Betreff: Re: [Flightgear-devel] FOV: Explanation?
> An: fli...@li...
> Datum: Montag, 1. September 2008, 17:21
> On Mon, 01 Sep 2008 00:30:09 -0600, Ron wrote in message 
> <122...@ip...>:
> 
> > On Mon, 2008-09-01 at 06:19 +0000, Heiko Schulz wrote:
> > > Hi,
> > > 
> > > I have a simple question, but I didn't find
> anywhere an answer:
> > > 
> > > What exact expresses FOV in FlightGear: are the
> values meant
> > >  in degress or in a other special unit?
> > > 
> > > How they are compared to focal length?
> 
> > 
> > It should be Field of View in degrees
> > 
> > http://en.wikipedia.org/wiki/Field_of_view
> 
> ..which also points to 
> http://en.wikipedia.org/wiki/Angle_of_view 
> addressing Heiko's focal length question.
> 
> 
> -- 
Thanks a lot so far,

The most ac's uses a FOV of 50-60. 
A lot of pages says that an objective with a focal length of 50 mm comes close to Angle of view of human vision.
50mm on fullframe has an angle of view about 46 degress.

My question: why is the FOV set by default then to 55? Is there something I miss? 
(Of course I know everyone can set this value by his own- It seems for me that the ac's looks more realistic with a fov between 36 and 46)

Regards
HHS

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