Google| Subject | Re: ISO value names are becoming ridiculous |
| From | Sandman |
| Date | 2016-01-09 18:59 (2016-01-09 18:59) |
| Message-ID | <sandman-4a355fd82cfaab823a8995a99f2a6fb1@individual.net> |
| Client | |
| Newsgroups | rec.photo.digital |
| Follows | nospam |
| Followups | nospam (1h & 13m) > Sandman |
In article <090120161159136548%nospam@nospam.invalid>, nospam wrote:
nospamnospamSandman
i see you snipped your own links that confirm it's logarithmic. no real surprise there.
You have your work cut out for you, these are some of the people and authors you need to convince:
you snipped the definitions and the explanations again!!
what's hilarious is that *you* provided the links that prove you wrong so it's no surprise you keep snipping them.Your reading comprehension problems is of no concern to me.
I.e. ISO is arithmetic. Just because you don't understand it doesn't make it untrue, you know.Sandman
http://www.merriam-webster.com/dictionary/arithmetic%20scale "a scale on which the value of a point corresponds to the number of graduations the point is from the scale's zero"I.e, a doubling of the value (ISO 100 ->200 ->400) is related to a doubling of the scale (for instance).
As opposed to ISO, where ISO 100 and ISO 200 are *100* steps, and ISO 400 and ISO 800 are *400* steps apart.http://www.merriam-webster.com/dictionary/logarithmic+scale "a scale on which the actual distance of a point from the scale's zero is proportional to the logarithm of the corresponding scale number rather than to the number itself"I.e. a step in the value (DIN 1 ->2 ->3) corresponds to a percentage of the scale.
Hahahahaha!!!And yes, f-stops are logarithmic and adheres to this, where each step (f1.4 ->f2 ->f2.8) corresponds to a percentage of the scale.nospam
ask a math professor to explain it to you.
Here's a fun exercise for you, open a Numbers document and write ISO values and plot them on a diagram:
<
>Now in the "Axis Scale" popup, change "linear" (arithmetic) to "logarithmic" and see how the Iso scale would look had it been logarithmic.
-- Sandman
2016-01-06-
