Focal Length, Aperture, etc



  • THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

    On 26/07/2005 at 09:51, xxxxxxxx wrote:

    User Information:
    Cinema 4D Version:   8.x 
    Platform:   Windows  ; Mac  ;  Mac OSX  ; 
    Language(s) :   C.O.F.F.E.E  ;

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    Ok, I have a value that is the Field of View (the angle of the camera cone). Now, how can I derive the Focal Lenght and the Aperture Width out of it?
    I know that, probably, I will only be able to calculate the Focal Length as a function of the Aperture Width and the Field of View or be able to calculate the Aperture Width as a function of Focal Length and Field of View. But, what are those equations?
    Thank you in advance.

    Rui Batista



  • THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

    On 27/07/2005 at 05:50, xxxxxxxx wrote:

    Couldn't you just reverse the calculations you posted in March:
    aperture/focus = 2*tan(fov/2) =>
    aperture = 2*focus*tan(fov/2) and
    focus = aperture/(2*tan(fov/2))



  • THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

    On 27/07/2005 at 06:08, xxxxxxxx wrote:

    Probably! :)
    Silly me... I had it all done already! LOL
    Thank you, Mikael.

    Rui Batista


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