What happens with my Canonet´s light meter?

[VíctorRF]

Hello.

Until I recive the WeinCell battery purchased on ebay. I have bought an alcaline 1.5 battery to use in my Canonet QL17.

This afternoon I´ve been testing the light meter and I noticed that in high speeds settings (1/250 and 1/500) the meter doesn´t work well.


A example: I was mettering a scene, witch aperture value was: 5.6 and shutter value was: 125.

I took the cam and moved the shutter speed ring to 125. No problem with it,the apterture selected by the light metter was at about 5.6 (ASA 400)

But, when I tried to move the ring to 500: Oh, no!!! the metter select: f16!!!! what happens!!

when I selected 250, the meter showed f16 as well!

I can´t undertand it! Is the meter dead!

No problem mettering in speeds under 125. the meter works well (Maybe 1 point of underexposure, but...)

Please, help me if you know something about.

THANKS!!

 

[Sonnar Brian]

Make sure that the mask in front of the meter's CDS cell is moving as you change shutter speeds.

Check back if that is working.

 

[VíctorRF]

Hi Brian.

Yes. The mask moves when I change shutter speeds.

Now I`ve a new problem: testing the light meter in low light conditions, the correct expossure was Tv: 1/8; Av: 4 (ASA 100)

I moved the ring to 1/15, 1/30 and the apertute change from f4 to 2.8, 1.7... but when I select 1/60, the aperture was: f16!!!!

In low light conditions the problem beggins at 1/60 instead of 1/250... that´s terrible!

Bye!

 

[Sonnar Brian]

Something must be wrong with the variable resistor ring in the camera. They get dead spots, and can be jumpy. Try working the ASA selector back and forth. Also , set the Guide Number selector and work the focus. You should see the needle move evenly with the movement of the focus.

Barring that, something is "messed up". A CLA will probably take care of it, but can be costly.

 

[VíctorRF]

Brian, I haven´t got a Guide NUmber selector on my Canonet (it´s the original Canonet QL17 with 45mm f1.7 lens)

I move the ASA selector and the esposure value changes, but not to the correct exposure...

 

[VíctorRF]

Hi!

This morning I noticed when I´m in ASA 100 the problem with the light meter beggins at 1/60, and when I´m in ASA 400 the problems is at 1/250.

Do you know if this problem will be repaired? Why the problems deppends on the ASA setings and why I only have it at some sutter speeds values. Why the meter works well in other values? I can´t understand it...

Brian, the needle don´t moves when I move the focussing ring.

Bye!