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Connected (and powered) Canon SX100 IS connected to a 1/2" mini black and white NTSC video monitor. The monitor was liberated from a Fisher 8mm CCD video camera.
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Connected (no power). This is a size comparison. The video monitor is just a little too large to make in a practical carry around device.
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Top open. Half of the magnifying optics are visible at the top. The input connections are defined just above the 1/8" stereo plug. +5 Volts, Ground reference, 1v p-p composite video source. For a Canon camera with sound and video a stereo plug is required. The stereo plug is defined as, Shield to ground, Ring to Composite Video, Tip to Audio (tip is not connected in the application).
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Bottom opened.
This monitor is very voltage sensitive. The voltage measured from the source video camera was 5 volts exactly. I have applied nearly 6.5 volts with 4 AA batteries. The voltage fluctuations primarily affects focus and screen size. So 6 volts overflows the screen and focus adjustments are required. Focus gets worse as the batteries lose power.
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Bottom (Labeled).
Since I am using batteries I needed to adjust my monitor to fit the voltage supplied. By trial and error, these are the adjustments I found.
CAUTION!
Though this is a miniature CRT it still has very high CRT voltages inside the case. When adjusting the focus, I accidentally grounded my hand and received a small shock (the shock was only enough to put my pinky to sleep for a half hour).
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Unsimulated image. Focus is better when viewed through the matching optics. The picture is surprisingly sharp. You could actually manually focus the camera with this setup.
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SX100 IS with a low tech and much more compact solution.
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