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jimmy462
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Re: ettr - an urban legend?


RustyBug wrote:
jimmy462 wrote:

So, let\'s take a look at your experiment and see what it is that was accomplished. By your explanation the exposures went like this...

pseudo ISO 25 @ 1 second
50 @ 1/2
100 @ 1/4
200 @ 1/8
400 @ 1/15
800 @ 1/30
1600 @ 1/60
3200 @ 1/125


I thought it was simply:

ISO 100 @ 1 second
ISO 100 @ 1/2
ISO 100 @ 1/4
ISO 100 @ 1/8
ISO 100 @ 1/15
ISO 100 @ 1/30
ISO 100 @ 1/60
ISO 100 @ 1/125



Hi RustyBug,

My apologies if I fanned the flames of confusion, I thought I was being clear. Your sequence...

ISO 100 @ 1 second
ISO 100 @ 1/2
ISO 100 @ 1/4
ISO 100 @ 1/8
ISO 100 @ 1/15
ISO 100 @ 1/30
ISO 100 @ 1/60
ISO 100 @ 1/125

...is 100% spot on with what the OP did in the field. The way I portrayed that data was an attempt to show how the OP achieved his pseudo ISO\'s. The long-hand version between your version and mine should read...

ISO 100 @ 1 second = pseudo ISO 25
ISO 100 @ 1/2 = pseudo ISO 50
ISO 100 @ 1/4 = ISO 100
ISO 100 @ 1/8 = pseudo ISO 200
ISO 100 @ 1/15 = pseudo ISO 400
ISO 100 @ 1/30 = pseudo ISO 800
ISO 100 @ 1/60 = pseudo ISO 1600
ISO 100 @ 1/125 = pseudo ISO 3200

Again, my apologies if my shorthand confused matters!


Jimmy G



Nov 06, 2013 at 10:55 AM





  Previous versions of jimmy462's message #11915449 « ettr - an urban legend? »