What Is The "Effective ISO"?

Customer request informaton about "Effective ISO at 0 gain".

What is the Effevtive ISO? If anyone knows about this, please explain.

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* ******* **** ** * ******** ******* ***** ********* ** photography *******, *** *** ***** **. **** ** ******* **** sort ** ****-******* ***** *******.

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** ******* *******, ********* *********** ***** *******, *** *** ***** is '*********', ***** ******* ******* *** ** ****. ** **** cases, ** ** **** ** * ****** ** ********* ******** in *** *****.

*******, *** ****** *** *** ****** **** ** ************ *******. Factors **** * **** *** ******* ***** *** *********** ** influence ***** ********, *** * ****** ****** *** **** *** ISO.

*** ** ** *********** ** *** ** ** ************ *******. If *** ****** *** * ****, ** ***** ** *** equivalent ** *** ****** *** ******* ** *** ******. *** our*** **** *******.

***** ** *** *** *****, ***** ********* *** *********** *********** of ******* *******. ** ******* ** ** "*********" *** *****, but ***** ***** ** **** ** ******** ** *** ********.

***** ** * *********** ******* *** *** ***** ******** ******* that ***** ***** *** ** ******* ** ****** ** **** question. *** ** *** ** * *** ********** ** ****...

***** **** ** *** *********** *****, *** ** (***?) **** as * ****** ** * ****'* ***********. *** *** **** was ***** ** ********* ** ***** ** *** ***, *** half ** **** ** *** ***. ** **** ********, ***** were **** *****-****: *** ***** ** "********" **** ***, *** not ** **** ** ***, ******** *****'* *** *** **** mathematical *********** (**. *** ***'* ***** ** ****** ** ***).

**** "*****" *********** ** *** **** *** ******* ** *** crystals ** *****-********* ********* ** *** ****, ** **'* ******* analogous ** *** ****** ** * ****** - ******-*** **** has ****** ******** ** ****** **** ***** ** *** ******* of "******", **** * ****** ****** ****** ****** ** *** expense ** **********.

**** ** **** *******, ***** *** * **** ********* ** grain ******* ********* ** *** ************, *** ********** ***********... *** the ****. *** *******, * **** ** ***** ********* **** Kodak ***** ****, ***** *** ***** ********** **** ** ******-***** film. *** ********* ****, * ***** *** ***** ****, ***** had ***** *** **** ***** ** ***** (*******) ** **** other *** *** *****, *** **** ***-***-*-***** **** ***** ** sensitivity - **** **, * ***** ***** **** * ************* faster *******. * **** **** ***** * **-**% ******* *** this **** **** **** ******** *****. **** **** **** ** ISO ** ******* ** **** **** **** *** ** ********** fine-grained, ** * **** ** * ***** ***** *********** ******* the *******, * ***** **** *** *** ***** ********* *** guy ***** ** * *** *****, *** ***** *** ********* bumps ** *** ***** ****** * ***** ****** *** *****.

** ******, ********* ****** ** **** **** "**********" ******... ** photography, *****'* * ****-**-***** ****** "***** **", ***** ****** **** in ********** ***** **********, **** ** */** ********, **** ******* should ** */***... ** **** *** *** ****, ***'* ***** 1/100s; *** *** ***, ***'* *** */****, *** ** **. This ***** ********* **** *** "*****" ********. *** ******** **** lens **** * *** ** */* (**** **** **** ******), Sunny ** **** *** *** ***** ******* * ******* ** 1/6400s (*/** -> */* = +* *****, ** **** ******* needs ** ** -* ***** **** */*** ** */****).

** ** **** *******, ** *** *** ** */* **** wide-open, **** *** ******* ** */*****, *** **** ** **** a ****-**-**** ***** ******** (** ***** **********, ** **** *******) in ****** ********, *** *** ****** **** *** "********** ***" is ***** ***. ** ****'* *** **** *** *** **** to **** *** ******* ** */*****, **** **** "********** ***" would ** ****** ** **; ** **'* *** ****** *** the ******* ***** ** ** ** */**,****, **** "********** ***" would ** ***.

** ******, ***** ** ** **** * ****-**-***** *** ****** a ***** *** ********** ************, *** ********* *** *** *** idea. **** *** ****** *** *********, *** ***** ******* *** output ** * ****** ***** ******* ** * ********* ********** amount ** ***** *** *** * **** ***** ******, ******** even ****, *** *** ****** ** * ******* ****** ** still ******** *********, ** ** **** ******* ** ********** ** light ***********, *** *** * ********** ******... *** ** **** film, **'* ****** **** **** * ***** ********** ** ** the ****** ***** ******* ********. ** ***** *****, *** *********** of *** ****** ****** *****'* ******, ** **** *** "******" the *** ** * ******* ******, **** ***'** ****** ********* is *** **** ** *** ******, ************** ******** *** ****** from **** *-**** *******, ** **** *********.