[MF3D.FORUM:79] Re: diagonals

[Tloc54452@xxxxxxx]

> How about solid angle divided by the aspect ratio of the format (always
> expressed as a number >= 1 to avoid landscape/portrait mode confusion)?
> This would favor square images over rectangular images of the same solid
> angle.

Interesting idea - sort of a figure of merit for a format.  This would give
solid angle and aspect ratio equal weight, more or less, in the figure of
merit.  Is that the object or am I missing the point?  (not uncommon)

One thing I should have said in the diagonal's favor is that it is a good
number to know since lenses' field diameters must cover the diagonals
approximately (actually the lenses are offset a minimal amount to set
the stereo window).

Speaking of that offset, where is Joel's program for calculating oculars?
(the ORT) Did it move to a new site?  That program took care of offset, if 
I remember correctly.  Can the program be purchased for home use?

John B