▲ 2 r/8mm
Why are Two of the Apertures Trapezoids?
Hi all,
Not a film aficionado or anything, but I bought this Brownie Turret 8mm Sightscope at a thrift store because I thought it looked cool.
But I noticed something interesting about it, and I can't seem to find an explanation. The aperture is a disk with holes punched in it. Except the second and third largest apertures are not circular, but trapezoidal in shape. The selector on the side labels them as "Open Shade".
What's the reason for this?
u/CptnRaimus — 4 days ago