low light photography

ISO and EOS – Acronym or Greek?

 Acronym or Greek? How do you pronounce these two photographic/camera terms?

ISO – EOS

You hear them said both ways:

ISO pronounced eye-ess-oh as in an acronym for the International Standards Organization and ISO pronounced eye-so as in the Greek isos, meaning equal. Whose right?

EOS pronounced ee-oh-ess as in an acronym for Electro-Optical System and EOS pronounced ee-oss as in reference to Eos the goddess of the dawn. Again I ask whose right?


photography how do you pronounce isoYou say eye-ess-oh and I say eye-so,
You say ee-oh-ess and I say ee-oss,
Eye-ess-oh, eye-so, ee-oh-ess, ee-oss,
Let’s call the whole thing off.


 

Well; it turns out that both are right. Sort of.

There is only one flaw in assuming that ISO stands for International Standards Organization. No such organization actually exists. The organization that these folks are refereeing to is actually the International Organization of Standardization. In which case the correct acronym would be IOS not ISO. The confusion comes from the IOS’s logo which does have the letters ISO on it. Check this out…
“Because ‘International Organization for Standardization’ would have different acronyms in different languages…our founders decided to give it the short form ISO. ISO is derived from the Greek isos, meaning equal. Whatever the country, whatever the language, we are always ISO.” ~ISO.ORG

As for EOS; again both are right. Canon uses the letters EOS for a line of cameras. I have one; the Canon EOS 7D. EOS stands for Electro-Optical System and is also meant to be a reference to Eos the goddess of the dawn.

However you pronounce these two terms when you spend an extra long weekend shooting in low lighting conditions, like I have just been doing, you need to take your EOS and turn up the ISO!

low light photography
Kansas History Museum – 1/15 – f/4.0 – ISO 1600 – 40mm – no tripods allowed
low light photography
Kansas History Museum – 1/15 – f/4.0 – ISO 1600 – 17mm – no tripods allowed

Have a great day everyone. I’ll be editing my higher ISO images from my EOS 7D for the next several days! I’ll have more to share from the extra long weekend as I go along.

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