Sometimes getting information about a camera is pretty piecemeal.
Sources & mentions in the video:
Label & strut pictures. And quite a collection:
1905 Montgomery Ward catalog:
Wollensak Junior info & 1903 catalog:
1912-1913 Wollensak Lens and Shutter Catalog:
Aperture, f-Stops, and the U.S. System:
Sometimes I watch Youtube videos on a channel called “The 8-Bit Guy”. I originally saw one on restoring an Osborne 1 “portable” computer. When I started at Computerland going on two score years ago, they’d been without a service department guy for a while. I walked in to a stack of Osbornes needing repair and learned fast. Any way it caught my eye.
I watched a video on rebuilding the battery pack in an old Apple laptop. Afterward, what happened was so bizarre, I had to comment on the video:
“You can’t make this up. Our smart TV asked me to rate this video with this dialog:
If anyone needs me, I’ll be at a black site somewhere.
I need to re-do a small porch deck. First, I need a post to replace the rotten one I pulled out.
Lowes is an OK store for a big box but their web site is a freaking train wreck. It asks if it can use your location (I have that set to always ask) but it doesn’t do anything with it. You still have to set which store using a zip code.
Back to the web site…
I was also pricing some deck material.
Glutton for punishment that I am, I also need a 1/8 inch diameter masonry bit.
I ended up buying nothing. Got out of the house and took a drive to the store so I got that going for me.
For 2020, I’m doing an extremely-long-exposure photograph or solargraph. The Worldwide Pinhole Photography Day rules are that the photograph must be taken “on the day annually designated as Worldwide Pinhole Photography Day ( April 26, 2020 )” or “Extremely long exposures will be accepted if any part of the exposure was made on Worldwide Pinhole Photography Day…”
I started the exposure on 1 May 2019 and I want to do a full year. That means if the exposure is a bust, I’ve missed WPPD and I’ve got nothing.
So… I decided to make another pinhole camera and use a scanner. I used a USB powered Canon LIDE 30 as a digital back and VueScan and TWAIN-SANE software. The results are not a supreme victory but first, the camera.
JPEG from a PDF page print from http://mrpinhole.com/. I used 8×10 inches as the portion of the 8.5×11″ scanner in case I had to resort to paper. The 16″ film dimension is insurance and a trade off to get the specs I wanted.
I’m up late and it’s actually May 1st. At about 3:00 PM local time I’ll cover the shutter and find out if the long exposure worked.
Camera video with images is here.
The camera was working on bulb (B) most of the time but not instant (I). The lens was in dire need of cleaning too.
This isn’t a complete tear-down. I didn’t open the viewfinder or remove the wind knob. This started just as notes for myself so there are some gaps in the images. I’ll try to fill in with text instructions.
Not shown: 1) Cleaned the shutter parts. I used cotton swabs and lighter fluid. 2) Re-blackened the aperture with a permanent marker. 3) Cleaned the lens front and back with lens cleaner. I doubt if it is coated so window cleaner might be OK.
1/240 frames per second = 0.004166666666667 seconds per frame (~4.2ms).
Open for 4 frames = shutter open for 0.016666666666667 (~16.7ms).
Turn it into a nice shutter speed style fraction: 1/X = 0.0167. X = 60.
If I’d been thinking, since 240 is a multiple of 60 and 4 and the shutter was open for 4 frames, I could have just done it in my head. Duh.
In my defense, I do this for a lot of old, slow shutters and it’s rarely this clean.
A tear-down post is here.
Not much to show that’s not in the video. If I get crazy and try again, I’ll post more here.
Update: I used some little snips from film & loaded a couple of single frames. What do you even call the piece of film that comes out of the canister but doesn’t quite reach the shutter frame? Any way, the opposite end from the leader.