Pentax Q Camera
The Pentax Q camera is the smallest interchangeable-lens digital camera (as of 2021). It spawned several offspring but ultimately failed to catch on as a product.
4 dollar camera
Found this old (1950s) 8mm movie camera at a local sale, for the princely sum of $4.
Lens collection
I don't care about the camera. I was hunting D-mount lenses, and here are three of them. I'm most interested in the long one.
Wollensak 38mm f/2.8
This is a 38mm prime (equivalent to 210mm if mounted on a conventional 35mm camera), f/2.8, with a focus ring, filter, and lens hood.
Pentax Q with Wollensak 38mm lens
Using a $10 adapter, the lens mounts onto the Q, which accommodates it in either manual or aperture-priority mode, albeit with manual focus.
Closeup of prickly tree.
f/4, 1/320th sec, ISO 125. 1.75 feet from camera.
Test shot - infinity DOF
f/5.6, 1/320th sec, ISO 125. Focus set to infinity (tree is 52 feet distant).
Test shot - resolution
f/8, 1/1000th sec, ISO 125. Infinity focus at about 90 feet - especially interested in the shingles, ventilator housings, and chimney guard caps.
Detail of resolution test image
f/8, 1/1000th sec, ISO 125. Detail crop, showing the screen (a bit blurry but detectable) on the chimney cap.
