On Mon, 1 Sep 2008 16:16:36 +0000 (GMT), Heiko wrote in message <[EMAIL PROTECTED]>:
> > > --- Arnt Karlsen <[EMAIL PROTECTED]> schrieb am Mo, 1.9.2008: > > > Von: Arnt Karlsen <[EMAIL PROTECTED]> > > Betreff: Re: [Flightgear-devel] FOV: Explanation? > > An: flightgear-devel@lists.sourceforge.net > > Datum: Montag, 1. September 2008, 17:21 > > On Mon, 01 Sep 2008 00:30:09 -0600, Ron wrote in message > > <[EMAIL PROTECTED]>: > > > > > 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, ..before you jump to conclusions, beware that focal length is _no_ exact science: ;o) http://en.wikipedia.org/wiki/35_mm_equivalent_focal_length ..on top of that we have X.org et al and our own ... " --geometry=WxH Specify window geometry (640x480, etc) --view-offset=value Specify the default forward view direction as an offset from straight ahead. Allowable values are LEFT, RIGHT, CENTER, or a specific number in degrees" ...and finally nutcases building cockpit simulators, thru monitor igloos. ;o) ..that said, a coupla quickie demos: http://www.kevinwilley.com/images/educational/wide_angle/slide_pine_tree.gif http://www.usa.canon.com/app/html/EFLenses101/focal_length.html http://www.kevinwilley.com/l3_topic03.htm > 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) -- ..med vennlig hilsen = with Kind Regards from Arnt... ;o) ...with a number of polar bear hunters in his ancestry... Scenarios always come in sets of three: best case, worst case, and just in case. ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
