Back together again
A couple of days ago I posted a shot of a Leica IIIf red dial, with a bit of commentary about what it needed to get it properly sorted. The last thing needed was to fix the shutter timing. Well, I bit the bullet and tore it down. Here is a picture of it in bits on my desk:
Pretty straightforwards, following many of the excellent directions available on the net. I got into a bit of difficultly reassembling the slow speed governor, but thanks to the wonderful Rick Oleson (google him), a brilliant and helpful camera fix-it whiz, I had foolproof instructions on getting it back together. The ripped film (above the knife) was hidden inside, all ready to jam things up as soon as I loaded it if I hadn’t found it by then.
The two images following are sound recordings I made to try and assess the before and after shutter speed situation. They were recorded using a freeware program called “Audacity”, using a microphone poking into the body cavity. Both recordings are of 1/2 second:
The first image shows that the first curtain traveled OK, and the second curtain started to try and close at 0.75 secs. but took another 0.25 seconds to actually close. It was also pretty noisy.
Adjusting the first and second curtain settings has altered this poor situation – the second image reveal a few things after my tear-down, clean and lube – it is much quieter; the timing is just a bit off at 0.55 secs (only a +10% variation); and the second curtain now properly closes the shutter and caps the film. The situation seems to me to be similar across all of the speeds.
It seems to work pretty well now. I will soon get around to properly timing the shutter speeds – they have gone from abysmally slooow to just a tiny a bit fast now, I feel. To get closer, I need access to an old fashioned TV with a CRT to act as a timing device.
Hopefully I will soon have that sorted, and then in with a film. Now all I have to do is find my collection of antique Weston meters. Or should I just guess through the “Sunny 16” rule?
Whatever, I can’t wait.