What is the ISO ISO?

tirediron

Watch the Birdy!
Staff member
Supporting Member
Joined
Jul 8, 2005
Messages
45,748
Reaction score
14,782
Location
Victoria, BC
Website
www.johnsphotography.ca
Can others edit my Photos
Photos OK to edit
For some reasn my Googlefu is lacking today, and my remembery is NOT remembering... does anyone know what the actual ISO # is that references the standards for sensor sensitivity?
 

vintagesnaps

Been spending a lot of time on here!
Joined
Jan 13, 2013
Messages
8,663
Reaction score
2,747
Location
US
Can others edit my Photos
Photos NOT OK to edit
Are you just trying to get points for the leaderboard? Had to wonder what you meant, wanting know the ISO for ISO...
 
Last edited:
OP
tirediron

tirediron

Watch the Birdy!
Staff member
Supporting Member
Joined
Jul 8, 2005
Messages
45,748
Reaction score
14,782
Location
Victoria, BC
Website
www.johnsphotography.ca
Can others edit my Photos
Photos OK to edit
Doing a lecture on exposure, and I like to be able to explain that "ISO" in and of itself is nothing more than a standard, like ISO 9001...
 

atiqursumon

TPF Noob!
Joined
Mar 19, 2015
Messages
26
Reaction score
1
Location
Bangladesh
Can others edit my Photos
Photos NOT OK to edit
International Organization for Standardization.
 

table1349

Been spending a lot of time on here!
Joined
Sep 9, 2006
Messages
0
Reaction score
4
Are you just trying to get points for the leaderboard? Had to wonder what you meant, wanting know the ISO for ISO...
Well heck, if that's all it takes then what is the ASA for ASA?????:allteeth:

Iron, if you can put the lecture off until after the elections President Obama might have a tele-prompter he can let go cheap. :biglaugh:
 

TCampbell

Been spending a lot of time on here!
Joined
Mar 31, 2012
Messages
3,615
Reaction score
1,556
Location
Dearborn, MI
Can others edit my Photos
Photos OK to edit
I have a photographic memory for details like this... but the images keep coming out black. ;-)
 

table1349

Been spending a lot of time on here!
Joined
Sep 9, 2006
Messages
0
Reaction score
4
I have a photographic memory for details like this... but the images keep coming out black. ;-)
Thats what happens when your developer gets old.
black-negative-film-10480560.jpg


I've put some new stuff in the mail to you.
5054184_Kodak_50L_Tmax_RS_bottles_s.jpg
 

Peeb

Semi-automatic Mediocrity Generator
Supporting Member
Joined
Jul 16, 2015
Messages
3,637
Reaction score
3,268
Location
Oklahoma
Can others edit my Photos
Photos OK to edit
When did they start spelling ASA as "ISO"?
 

minicoop1985

Been spending a lot of time on here!
Joined
Sep 3, 2013
Messages
5,520
Reaction score
1,862
Location
Appleton, WI
Can others edit my Photos
Photos OK to edit
Native ISO is a completely different story. For MOST of you it's 100. Some of you it's 50. Mine's 25... for some odd reason. The other native ISO is probably referring to the sensitivity of the paint in aboriginal cave paintings.
 

vintagesnaps

Been spending a lot of time on here!
Joined
Jan 13, 2013
Messages
8,663
Reaction score
2,747
Location
US
Can others edit my Photos
Photos NOT OK to edit
Peeb, about the same time they stopped spelling it DIN.




OK, in the off chance you or anyone else may really want to know, DIN was the German abbreviation and is on some of my old cameras - don't ask me to remember what it stands for, it's in German! ASA was American (Standards Association) and ISO is International (Standards Organization).

I think there were other measures of light sensitivity too in early photography that eventually dropped out of use.
 

nerwin

Been spending a lot of time on here!
Joined
Jan 31, 2015
Messages
3,486
Reaction score
1,435
Location
Vermont
Website
nickerwin.com
Okay, I have to mention something funny.

A while ago I was watching a photography "know how" video on YouTube just because I thought it was going to be interesting and sure enough, it was.

The guy would change the ISO and actually, yes, actually say International Standards Organization 400, 640, 800, etc. It cracked me up. Could you imagine talking to a photo buddy like that. "Yeah! I had to change my International Standards Organization to 6400 to take that shot!" Hahahaha
 

Most reactions

Top