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Old June 21st 18, 09:03 PM posted to rec.photo.digital
Carlos E.R.
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Posts: 278
Default Meaning of ISO value in digital photography?

On 2018-06-21 16:21, Whisky-dave wrote:
On Thursday, 21 June 2018 11:12:10 UTC+1, Carlos E.R. wrote:
On 2018-06-21 11:04, Whisky-dave wrote:
On Thursday, 21 June 2018 05:07:29 UTC+1, Eric Stevens wrote:
On Wed, 20 Jun 2018 02:17:50 -0700 (PDT), Whisky-dave
wrote:



Before the ASA standard most film was rated in Weston and DIN. See
https://en.wikipedia.org/wiki/Film_speed#Weston

That was a bit before my time so I never really experienced it.

I did find my first exposure meter the other day, well a bit of it, think the make was sekonda or similar and it used a CDs cell I think, it had a needle and a dial and a little plastic cream shutter that rolled over the sensor.
Next time it re-appears I'll have to photograph it.


The description matches one my father had. I have it somewhere, but he
had to stop using it when the calibration went wrong and we did not know
how to mend it. It used no batteries.

The leather pouch is labelled sixtomat. The device itself lost the
label. The needle doesn't move anymore. On the rear it has a "color
finder" thing, name "Gossen". It is for finding the colour temperature.
It says my led lights on my desk give 2600, while the room ones give
perhaps 4000. It was for "cine" ussage, I think.

There are photos on google. Seems to be this one:
http://www.camarassinfronteras.com/accesorios/sixtomat/sixtomat.html


Yes that's a pretty close match.


but my pouch is different.


I don't think I had one to start with.


Mine has the exact shape of the device and fits exactly, so it is original.

Meanwhile, I found out I also have the instruction booklet :-)

My father was much more organized than me.

--
Cheers, Carlos.