JMC1969
Subscriber
Just when I thought I was learning something useful about shutters, I tripped, I fell, And I'm bloody. Bloody confused.
Based on a 2 year old thread here at Apug ((there was a url link here which no longer exists)) I bought a used Prontor_press Shutter 1. If you didn't read the link yet, it is about being able to make a small alteration to this shutter and you will then be able to fit most anything that will fit a copal #1. From what I have read, Copal #1 is the most common size and I need a less expensive way to get fit into a 210 or 240 lens for my camera. My shutter came today, yet Friday at work I found an old Prontor shutter that came from an old copy stand we no longer have. It doesn't say "Press" on it, but works the same as a Press shutter. Pictured below are these two shutters(sorry,hand hold P&S). The one on the right is the one from work, on the left, I bought (as a #1 in the listing).
The one I bought is certainly a newer item and all the measurements are the same except the iris.
The right shutter with aperture opened all up to 4.7 measures 23mm, scale reads from 4.7 to 45, B to 125 and came with a Tominon 127mm that someone apparently cleaned with SAND!
Left shutter (bought) opened up to 4.5 is 14m, Scale reads from 4.5 to 45, T B to 45 and came with a really clean Rodenstock-Yasron 75mm.
So I can't imagine that I can put a 210mm or 240mm in a shutter with an iris that is this small. The aperture in the right one is a bit sticky.
I also bought some prontor-press 1's for parts that are on the way, but at this point have no idea what they are going to look like.
According to this chart (http://www.sizes.com/tools/shutter_photo.htm) it is true that the lens cell will screw on because the front thread is 40mm and the back is 36mm.
What don't I understand? Besides a lot.:confused:
Based on a 2 year old thread here at Apug ((there was a url link here which no longer exists)) I bought a used Prontor_press Shutter 1. If you didn't read the link yet, it is about being able to make a small alteration to this shutter and you will then be able to fit most anything that will fit a copal #1. From what I have read, Copal #1 is the most common size and I need a less expensive way to get fit into a 210 or 240 lens for my camera. My shutter came today, yet Friday at work I found an old Prontor shutter that came from an old copy stand we no longer have. It doesn't say "Press" on it, but works the same as a Press shutter. Pictured below are these two shutters(sorry,hand hold P&S). The one on the right is the one from work, on the left, I bought (as a #1 in the listing).



The one I bought is certainly a newer item and all the measurements are the same except the iris.
The right shutter with aperture opened all up to 4.7 measures 23mm, scale reads from 4.7 to 45, B to 125 and came with a Tominon 127mm that someone apparently cleaned with SAND!
Left shutter (bought) opened up to 4.5 is 14m, Scale reads from 4.5 to 45, T B to 45 and came with a really clean Rodenstock-Yasron 75mm.
So I can't imagine that I can put a 210mm or 240mm in a shutter with an iris that is this small. The aperture in the right one is a bit sticky.
I also bought some prontor-press 1's for parts that are on the way, but at this point have no idea what they are going to look like.
According to this chart (http://www.sizes.com/tools/shutter_photo.htm) it is true that the lens cell will screw on because the front thread is 40mm and the back is 36mm.
What don't I understand? Besides a lot.:confused: