1. Experimental-Technical

Vintage Lens Q

Using unusual and 'antique' lenses on the Pentax Q camera.
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  • Pentax Q Camera

    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

    4 dollar camera

    Found this old (1950s) 8mm movie camera at a local sale, for the princely sum of $4.

  • Lens collection

    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

    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

    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.

    Closeup of prickly tree.

    f/4, 1/320th sec, ISO 125. 1.75 feet from camera.

  • Test shot - infinity DOF

    Test shot - infinity DOF

    f/5.6, 1/320th sec, ISO 125. Focus set to infinity (tree is 52 feet distant).

  • Test shot - resolution

    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

    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.

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    Closeup of prickly tree.
    Test shot - infinity DOF
    Test shot - resolution