Interactive film back and focal length lab: pick real cinema gates, set focal length, compare spherical vs anamorphic FOV, read 35mm and Super 35 equivalents, and export Nuke haperture / vaperture. Pairs with
Lens Flare,
Motion Blur, and
lessons. Film-back numbers cite manufacturer tech data and Super 35 reference gates; Nuke export uses Foundry's inches convention for haperture / vaperture.