MC 63 Zeiss

[wstenberg]

Ok, someone must know this...
What are the buttons on the MC 63?
Shutter speed and Exp. are obvious.
What is recipr. ?
What is x0,75; x1; x1,5 ? magnification?
Then the ASA/DIN ring... There is a white dot, and a white triangle. The inner knob turns and the outer ring turns. There's a diagram of a large format, and another of a small format...
I want to set the ASA to 125 Large Format... How do I do that?

Sorry for all the questions. Probably obvious to a camera expert. I can only find the manual for the MC 63A. It's a newer version, and the buttons are different.

Please help!

Thanks!

[75RR]

Manual image (below) would indicate that recipr. = reciprocity

"Reciprocity is the law of the relationship between shutter and aperture.
It stipulates that one stop increase in aperture is equivalent to the shutter duration doubling. Both increase light by one stop."

viewtopic.php?t=6149#p56930

[MichaelG.]

This is for the MC 63 A
http://www.science-info.net/docs/zeiss/MC63ACamera.pdf
But it will probably help with understanding

MichaelG.
.
Edit: see also
http://roslistonastronomy.uk/wp-content ... manual.pdf

[wstenberg]

OK, Thanks, that helps with some of it. I still don't know how to take a picture. How do I set the ASA/DIN? There are two markings. I'm not sure how far to turn the knob...

[MichaelG.]

OK, Thanks, that helps with some of it. I still don't know how to take a picture. How do I set the ASA/DIN? There are two markings. I'm not sure how far to turn the knob...

The scan resolution in my second link is poor ... But if you look carefully you will see that the 'leader lines' 6.3 and 6.4 go to the large-format and small-format images respectively: Those are the relevant setting marks.

The general instructions for taking a picture [Auto] or [Semi-Auto] are given 'pictorially' on the unit.

MichaelG.

[wstenberg]

Ok, that’s it. Turn the ASA/DIN inner knob to the right triangle for 35mm and turn to the left white dot for large format. The outer ring adjusts the ASA/DIN up or down to intermediate values. The inner knob turns quite far around. The outer ring just turns up/down two clicks.
The Recipr. Knob compensates for reciprocity failure. It adjusts based on type of film used. The default value is 3, but the value listed for my Ilford B&W film is 4.
Still not exactly sure what the .75x 1x 1.5x knob does. It could be for controlling exposure, adjusting up/down. Or it could compensate for the magnification of the camera adapter. I will just start at 1x and see what happens.

Thanks everyone for the help!

[MichaelG.]

William,

It's of no relevance, given that we can pick them up for free these days [!] ... but you may be interested to see the list price of your controller:
http://earth2geologists.net/Microscopes ... g_1978.pdf

Page 5.19

MichaelG.

[75RR]

William,

It's of no relevance, given that we can pick them up for free these days [!] ... but you may be interested to see the list price of your controller:
http://earth2geologists.net/Microscopes ... g_1978.pdf

Page 5.19

MichaelG.

Old price lists are much more fun when one can convert original prices to today's money

https://measuringworth.com/