posted 12-22-2009 02:32 PM                    

• Step 1: Prepare a loop of film, like sharp credits or if you can get some, SMPTE RP-40 test film;
• Step 2, Thread and run the loop, lamp on and dowser open;
• Step 3, Set the focus knob to it's midpoint (turn it fully one way and then back the other till it stops, counting the number of turns, on most Simplexes it's about three full turns, so set it at 1 and one half turns from either stop);
• Step 4, DO NOT TOUCH THE FOCUS KNOB AGAIN DURING THIS PROCESS!!;
• Step 5, starting with the scope lens, loosen the lens setscrews (or clamp screws on older adapters) SLIGHTLY, you want the lens just loose enough to be able to move with some effort but not so loose that it can move freely or fall out);
• Step 6, Insert the lens adapter ALL THE WAY into the lens holder, then tighten the LENS HOLDER CLAMP KNOB slightly so the ADAPTER can't move around;
• Step 7: Shift THE LENS AND ONLY THE LENS in the adapter until it is sharply focussed and the scope image is straight and not crooked;
• Step 8, Loosen the LENS HOLDER CLAMP KNOB and carefully push the adapter and lens out enough to tighten the LENS SETSCREWS. DON'T LET THE LENS MOVE while you do this.
• Step 9, Reseat the lens adaptor and lens into the holder to see if you're still in focus. If not, repeat steps 5 - 8 and check it again. If focus is still good, move on to your flat lens repeating the above.

posted 12-22-2009 11:18 PM                    

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Hmm. Never seen a single lens holder with multiple knobs [Roll Eyes] .

Sorry Tony [Smile] He he. The Kinotons' lens turrets have one common focus knob whic shifts the whole turret back and foth and not each individual lens that is why I was asking if the Simplexes use the same system as I have not seen one.
Demetris

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LOL I once thought I had seen a single-lens Century with multiple focus knobs.

Now that you mention it, you're right about the Kinotons..mine at UC Irvine have those blasted turrets and the single knob..After I set the lenses they stay in focus pretty well, but the damn turret and aperture changer never seem to index to the same place twice..I absolutely hate them.

Anyone out there got a pair of single-lens mounts and holders for an FP-20 they'd like to get rid of?

quote: Michael Voiland

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I was looking through the simplex projector manuals and could not find the part where they talk about the focusing knob. Maybe I am looking in the wrong part of the manual.

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