SUCCESS!! Calibrating QL17 GIII for ISO 1600!! :)

[dmr]

1. The needle doesn't go above f/1.7 into the "red zone", so there is no lock when there is not enough light. and thus when you want to open up the aperture, you have to close it down and then open it back up step by step to make sure it's at f/1.7 instead of inside the red zone.

Mine definitely still refuses to shoot with the lens cap on. I wonder if you turned it too far or bent something?

2. The actual aperture doesn't match the meter reading. I shot a mirror at different f-stops and the actual openings were smaller than what the meter suggested.

Hmmmm ... This makes me wonder if something is bent. The needle that shows in the viewfinder is on the opposite side of the meter from the one that gets "trapped" to set the aperture. If they do not agree, something is off here.

3. Since the needle gets into the lower red zone easier, you have to be extra careful not to push it even further down, otherwise the needle will act weird once it comes back up (a tap on the camera fixes it)

Uh-oh, combined with 1 and 2 above, I really think something is bent or otherwise out of alignment. You really shouldn't have to tap on it to get it to do something. 🙁

So how did your tests go, dmr?

So far, so good. I'm gonna try to shoot a roll of Kodachrome of the autumn colors as soon as I get back in town. That will be a good additional test.

 

[dmr]

dmr what are you some kind of a genius or something? I thought you were a photographer 😀

Uh, is there anything wrong with being both? 🙂 🙂 🙂

 

[Twigs]

edit: dammit... something is wrong.

i'm still looking at it right now 🙁

 

[ben lloyd]

Trius,

The 35 RC would be easy, see Rick Oleson's tech notes:

http://rick_oleson.tripod.com/index-134.html

I adjusted my meter from a one stop under exposure (what you are looking for) back to normal, I'm sure going the other way would be just as easy.

Ben

 

[Macpherson]

Just wanted to say thanks to DMR for the detailed instructions on this topic, which helped me re-calibrate my Canonet for a silver oxide. For a first-timer, it was just what I needed to get the job done!