The old film camera
PencilChallenging

Sketch two short tapered barrels connected by a simple bridge. Lens ellipses, eyepieces, and a small focus wheel create a useful paired-form exercise.
Draw two short tapered cylinder shapes side by side. Keep their front and back ends aligned to the same perspective.
Add the central bridge and small focus wheel. Place a smaller eyepiece behind each barrel.
Draw simple front lens ellipses with one rim line each. Keep pencil tone near the bridge overlap and selected rim edges.
A small thing to tryCompare the two front ellipses before adding the bridge so both barrels point in the same direction.