Pentax's S1a (H1a) represented the end of the S line before the Spotmatics were introduced. A budget model, the S1a had the same construction quality and most of the same functionality as its peer, the Sv (H3V). This budget model lacked the self timer and
marked 1/1,000th top speed.
This video presents a more in-depth look at how to use the camera. Video one, linked below, presents a general overview of the camera, its layout, and functions.
Skip the Intro: 0:07
Loading and Unloading Film: 0:35
Mounting and Unmounting Lenses: 4:14
How to use a Flash: 6:43
How to Take a Photo with the H1a: 8:01
Hidden Shutter Speed: 10:33
The Viewfinder: 12:09
Asking for Approval: 14:03
Link to Video 1:
Video two, linked below,
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