Switching Moviecam SL from N35 to S35
Posted 20 June 2015 - 01:30 AM
I have some questions about how to switch my Moviecam SL over from N35 to S35. We don't have any more film rental houses in the Bay Area so it looks like I will have to do this myself. I am using the SL viewfinder, so I don't have to readjust a frame glow mask. I rotated the PL mount and installed a S35 ground glass, but I can't figure out how to recenter the viewfinder system.
After removing the B&W video tap and viewfinder, the engraved plate underneath already says S35, but the optical path is still clearly centered for N35. After removing all the 2mm retaining screws, I can't figure out how the engraved plate is supposed to flip over, or how any of those adjustments would re-center the optics. Looking down through the aperture, I can see that the ground glass is still centered for N35. What is the proper procedure here? And what do the adjustment screws on the engraved plate do exactly?
Thanks in advance.
Posted 20 June 2015 - 01:42 AM
Posted 14 October 2015 - 08:13 AM
Did you sort this out?
I'm away from cameras this year, so I can't grab an SL to check, and it's been quite a few years now since I changed an SL over, but from memory you just undo the 2 screws holding the little engraved plate and flip it over. That recenters the mounting holes for the viewfinder locating pins, and shifts the viewfinder over by a mm. The viewfinder mounting screws are held in elongated holes so they can shift over. It's a very small shift, just to keep the widened groundglass frame within the viewfinder's image area. If you can see the whole GG frame when the VF is refitted then all is good. Sounds like the plate never got flipped to Standard in the first place, so you can just leave it as is.
Posted 14 October 2015 - 02:34 PM
Do any of the 2mm screws adjust things like focus or flatness of field of the viewfinder or video tap?
Posted 15 October 2015 - 02:23 AM
Unfortunately, once I put the viewfinder back on the left frame line of ground glass was still not visible. As you can see, it is barely visible looking down through the cover glass. I tried flipping the engraved plate over to N35 just to see the difference, but to my surprise there was none. So I thought maybe the locating pins for the engraved plate may have needed adjustment. In order to get access down there, I had to remove the cover glass. Underneath were metal shims:
It appears the locating pins on top are screwed directly into the body and are non-adjustable. However the plate with the electronic connector had some play left to right. I moved the connector as far to the right as possible and reassembled the camera. Lo and behold, I can now just barely make out the frame line on the left edge of frame!
The little gap in the middle of the left frame line is matched by a gap on the right frame line of the ground glass, so that is how I know I'm seeing the actual edge of frame. Before, I only saw a curved field of black as the edge of the viewfinder optics were vignetting the frame line. Thanks again for your help Dom!
Posted 15 October 2015 - 03:33 AM
All the best!
Posted 15 October 2015 - 03:41 PM
Posted 15 October 2015 - 07:19 PM
Posted 15 October 2015 - 07:29 PM
Posted 05 November 2015 - 02:14 PM
I'm just a guy who bought a camera package, not a rental house! Wish I had access to more accessories like a 100% video top but alas have to make do with what I have