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Assistance with Lightmeter on canon 7S
Old 12-11-2016   #1
Austrokiwi
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Assistance with Lightmeter on canon 7S

I recently became a Canon 7sz owner. My experience with Film Cameras was never good. I recently became a Canon 7sz owner. This was by default as the camera came with a lens I had purchased. Having looked hard at the Camera I decided to give it a try out. I have worked all the controls out (except one), obtained a battery( and adapter), and mistakenly took shop advice and got 400 ISO film (the lens is the F0.95). The light meter works fine but I am intrigued with the switch for the light meter. It has "C", "Off", and "On". Would someone please enlighten me what in the world is the "C" for. I noticed when I turn the switch to "C" the meter swings fully to the right of the meter dial. As is usual in such forums as I write my question I suddenly think of an answer; does the "C" stand for "check" as in checking the power level of the battery.
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Old 12-11-2016   #2
Waus
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Congrats with the Canon 7S & 50mm 0,95!

Here's a manual:
https://www.manualslib.com/manual/554660/Canon-7s.html
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Old 12-11-2016   #3
Jake Mongey
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Yes thats the check function.
Congrats on the purchase, been looking for a 7sz for a while but theyre so rare!
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Old 12-11-2016   #4
Austrokiwi
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Quote:
Originally Posted by Waus View Post
Congrats with the Canon 7S & 50mm 0,95!

Here's a manual:
https://www.manualslib.com/manual/554660/Canon-7s.html
Thank you that did the Job... the "C" does stand for check
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Old 12-11-2016   #5
Robert Lai
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C is for battery check. If the battery is good, then the needle should swing all the way into the blue section of the meter readout.

The lens meter has a High and Low sensitivity setting. This is adjusted by turning the bezel around the light meter port.
Use the High (marked "H") setting for low light.
CdS cells may take some time to stabilize in low light settings, so give it time if it is very dark. Remember this is technology from the 1960s. Later Gallium Arsenide or Silicon blue cells have instantaneous response.

The Low sensitivity setting ("L") puts an aperture plate physically in front of the cell to reduce its sensitivity. Use this setting for typical daylight exposure measurement. The Leicameters also use the same trick to adjust their sensitivity ratios. CdS cells are also subject to temporary blindness after exposure to excessive light. So, if you aim the camera at the sun, not only could you burn the shutter (stainless steel, but it has been reported that a hole could burn through), but you may blind the meter. That is, it could take several minutes before it can respond accurately to light level changes.

Film is not complicated, but it does require understanding of what is going on. These old cameras expect you to do the thinking. There is no "AUTO" function.

Stephen Gandy has a great writeup on the Canon 7 series of cameras here: https://cameraquest.com/canon7sz.htm
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Old 12-11-2016   #6
Austrokiwi
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Thanks for the pointers Robert. I suspect a challenging learning curve. At least my most used setting on my modern camera is "M". I expect the Range finder will teach me a few things that I can use on the modern beast.
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Old 12-11-2016   #7
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I used to be confused about the "H" and "L" settings for the light meter on my 7S. Did I use the "L" setting for Low light and the "H" setting for High light? WRONG! It's "H" for High sensitivity in Low light and "L" for Low sensitivity in High light. Confusion reigned supreme. Be confused no more. Spavinaw to the rescue! If the light is low like from an orange candle flame or the orange setting sun use the orange letter "H" setting. If the light is white and bright like the midday sun use the white "L" setting. Logic reigns supreme. You're welcome.
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