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Help with ISCO 3 and Multistand II

post #1 of 3
Thread Starter 
I've been running my ISCO 3 with CineSlide setup for quite some time now, and I could not be happier!

I've noticed one thing that irks me, though. When the CineSlide moves my lens back and forth, the Roll adjustment of the lens changes VERY slightly. This clearly isn't something noticeable without a pattern, and is only minimally visible even with the pattern. As with most of us though, I am always searching for perfection.

I noticed that there should be a Roll adjustment set-screw to prevent changes in Roll. On the front of the ring of my Multistand II, I notice a brass appearing screw protruding. Is this what I need to screw in to lock the Roll? I only notice one of these, and I'm not sure if it is the correct set screw or not.

Can someone in the know chime in, perhaps with a picture and arrow, to help me?

Thanks for any help!!

Kevin
post #2 of 3
Kevin:

Sorry about the delayed reply, I haven't looked here as often as I'd like.

The Multistand II has a small (M3) nylon tipped set screw that goes through the rear lens mount ring. It is parallel to the light axis and sits in a quadrant of the ring. It should have a small nylon tip on it. Once your lens is adjusted that set screw should be screwed out so it lightly presses against the back of the lens. IT will hit the outer ring of the Isco IIIL. Those threads aren't as beefy as I'd prefer so don't tighten it so much it puts a strain on them. It's meant to be a "brake" and shodul not take much force to hold the lens from rotating about the light axis.

If you have a IIIS the setscrew is moved to a tapped hole in the lens adapter ring, closer to the center of the smaller lens.

Scott
Edited by GetGray - 9/26/12 at 12:51pm
post #3 of 3
Also, the lens usually won't move on it's own like you described, even without the "brake" screw. There are also 3 set screws around the outer rim of the multistand. Be sure each of them is snug. They hold the lens' adapter ring in place.
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