Someone just told me that back in the day, ISO was called ASA. I've never heard that. Has anyone else?
ISO...ASA?
(37 posts) (18 voices)-
Posted 3 years ago #
-
That's /kinda/ true:
http://en.wikipedia.org/wiki/Film_speedPosted 3 years ago # -
When I started it was always ASA. When I stopped shooting film around 2002, I still thought ASA. It wasn't until I got my D90 last year that ASA became ISO to me.
Posted 3 years ago # -
Makes me feel old (makes me feel my age??). It was always ASA to me, too, until I started shooting digital.
Posted 3 years ago # -
ISO is used for lots of different things not just film/light sensitivity.
Posted 3 years ago # -
NikoDoby said:
ISO is used for lots of different things not just film/light sensitivity.Well clearly, as the International Organization for Standards has thousands of standards involving thousands of industries. ;)
In this case (digital cameras) "ISO" is just accepted shorthand for "ISO 12232:2006"Posted 3 years ago # -
Well obviously, duh
Posted 3 years ago # -
It is great that we have published, accepted, industry standards which require payment to read. :(
Posted 3 years ago # -
Most people think ISO is only for photography. Coming from an engineering background I never really associate it with photography as much as others do.
Yes but it's a fun read on long trips,lol.
Posted 3 years ago # -
Yeah, can somebody expand a little more what ASA is and what ISO is? My F2 Photomic has an ASA dial and my D300 has an ISO button. What's the difference?
Posted 3 years ago # -
ISO 200 and ASA 200 are the same thing, just that ISO is a modern standard. ASA ratings only went up to 1600 IIRC.
Posted 3 years ago # -
OK, that's a start. But why? How come ASA only went to 1600? BTW, what the duck is IIRC « that?
Posted 3 years ago # -
ASA only went to 1600, because ASA1600 was the fastest film made.
Sorry, IIRC = If I Recall Correctly.
Posted 3 years ago # -
BTW ASA stands for American Standards Association, which later became the American National Standards Institute. Later camera companies and film makers switched to the International Organization for Standards (ISO).
Posted 3 years ago # -
Thanks PB PM. That IIRC was a FAIL on my part though *facepalm*
So then what I don't understand is why ASA became ISO? I mean, what does it have to do with anything?
Posted 3 years ago # -
-
When I started in photography is was ASA. I'm feeling old.
Now how many here know what DIN was?
Posted 3 years ago # -
-
I think that this is what DIN means: DIN speed:
Film speed system used by German standards organization. It is based on a logarithmic scale and is represented by a number printed on the film carton or box. A change of +30 in rating indicates a doubling of film speed, e.g. 210 DIN is twice as fast as 180 DIN and 150 DIN half the speed of 180 DIN. The system has now been replaced by the ISO system.
Posted 3 years ago # -
ASA is strictly the 1/2/4/6/8/12/25/32/50/64/80/100/125/160/200/250/320/400/640/800/1000/1250/1600, etc scale, whereas ISO incorporates both the "degree" designation of the film as well as the traditional ASA designation.
ASA is pretty much analagous to ISO since we really only look at the first part of an ISO designation in most situations (find me one person who actually buys film primarily based on what degree or DIN it is...), and so the terms are interchangeable.
My F3 has ASA settings up to 6400, it didn't just 'stop' at 1600...it goes all the way up to infinity basically; while practically ending at 25600 since I don't think anyone ever pushes film any further than that.
Posted 3 years ago # -
Ah, I just assumed it stopped, since I never saw film rated over ASA 1600.
Posted 3 years ago # -
There's Kodak TMZ3200 and Ilford Delta 3200...
Posted 3 years ago # -
Now I know I am REALLY old. When I first started with cameras, there wasn't any ISO OR ASA OR DIN. It was just an old Brownie box camera. AND, a pinhole camera made in my boyscout daze.
Am I really the oldest person on this forum, at age 70?
Nick V "with the little bit of gray hair to prove it..."
Posted 3 years ago # -
-
astrophotographer said:
Now how many here know what DIN was?getting old too :) as I still remember that
nikyvee said:
Now I know I am REALLY old. When I first started with cameras, there wasn't any ISO OR ASA OR DIN. It was just an old Brownie box camera. AND, a pinhole camera made in my boyscout daze.Am I really the oldest person on this forum, at age 70?
Nick V "with the little bit of gray hair to prove it..."
nick, I'm more than half Your age, and have some gray hair here and there :)
Posted 3 years ago #
Reply »
You must log in to post.
