canon QL17

FM2N · Feb 3, 2009

Hello All,
Does anyone that uses this camera adjust the ASA to make up for the different voltage of the newer non mercury batteries? If yes can you let me know how? If no then are you doing anything in the dev phase? Also what batteries are you using?
thanks
Arthur

bill williams · Feb 3, 2009

I go to WALMART and purchase an eight pack of the rayovac 675 hearing aid batteries, and use them in the camera. Not a snug fit side to side, but the + and - connect well and I don't have to make any adjustments for the voltage.

bhop · Feb 4, 2009

I use a Wein Cell.

narsuitus · Feb 6, 2009

I use a hand held meter.

dr. ego · Feb 6, 2009

i use some aliminium foil and 675 zinc air hearing-aid battery's.

PhotoJim · Feb 6, 2009

Adjusting the ISO is tricky because the meter varies based on the voltage of the battery. When the battery is new, you might be overexposing... when the battery is older you might be underexposing. It's probably not fatal with C41 film, but the substitute batteries mentioned here are probably the best bet.

dmr · Feb 9, 2009

I successfully recalibrated one of mine to kill two birds with one stone, use the new "wrong" batteries and use ASA/ISO up to 1600. I did a write-up of this over at RFF, but I will re-post it here if anybody wants it.

coldrobba · Feb 10, 2009

Dmr can you repost this please i would be interested how you got this working upto 1600.

dmr · Feb 11, 2009

coldrobba said:
Dmr can you repost this please i would be interested how you got this working upto 1600.

Yes, let me dig it up and I'll post it in a separate thread.

Alexis Villas · May 14, 2021

This Canon Canonet QL17 was a nice camera while it worked. One roll of film and shutter release stopped working.
Best!
Rayovac Hearing Aid Batteries

Nicholas Lindan · May 14, 2021

I've used alkaline batteries in place of mercury cells. It worked with a 1 stop adjustment in the ASA - at least in my camera, I'm sure the amount of adjustment varies. It worked over the normal range of outdoor lighting, about 5 stops.

Yeah, an alkaline battery needs periodic replacement as it's output voltage droops, but so what.

Chan Tran · May 14, 2021

I use Alkaline A625 and it works perfectly. Meter is less than 1/3 stop off. I tried and it works fine. If it doesn't I simply use it without battery. It's not worth it to get those fancy batteries.
To compensate using the ASA setting the camera must be
1. Repeatable.
2. The response of the meter must be linear.

If the reading changes as the battery age then you don't have repeatability.
If it's wrong by a different amount in bright light vs in low light then it's not linear. I found my Minolta SRT-101 meter respond is not linear even when powered with exactly 1.35V so I simply use it without the battery. It's a lot of fun using meterless camera.

canon QL17

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