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  #191  
Old November 26th 04, 03:45 AM
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Default

Kibo informs me that Timo Autiokari stated
that:

wrote:

Timo Autiokari wrote:
Exposure adjustment in fact is a linear
operation, multiplication by a factor,

Incorrect. It's scaled in F-stops, which are exponential, not linear.


Exposure adjustment by +1 fstop is the same as multiplication of the
data values by 2. Exposure adjustment by +2 fstop is the same as
multiplication of the data values by 4. So a linear operation. Just
the gradation of the aperture and the time dial is logarithmic, they
both affect to the data linearly.


You failed maths at school, didn't you?

You'll find the mathematical details in
any good textbook onphotography.


Then study them.


I have. You clearly havn't.
I won't waste my time trying to educate you, as you clearly prefer to be
ignorant.

--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
---^----^---------------------------------------------------------------
  #192  
Old November 26th 04, 03:45 AM
external usenet poster
 
Posts: n/a
Default

Kibo informs me that Timo Autiokari stated
that:

wrote:

Timo Autiokari wrote:
Exposure adjustment in fact is a linear
operation, multiplication by a factor,

Incorrect. It's scaled in F-stops, which are exponential, not linear.


Exposure adjustment by +1 fstop is the same as multiplication of the
data values by 2. Exposure adjustment by +2 fstop is the same as
multiplication of the data values by 4. So a linear operation. Just
the gradation of the aperture and the time dial is logarithmic, they
both affect to the data linearly.


You failed maths at school, didn't you?

You'll find the mathematical details in
any good textbook onphotography.


Then study them.


I have. You clearly havn't.
I won't waste my time trying to educate you, as you clearly prefer to be
ignorant.

--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
---^----^---------------------------------------------------------------
  #193  
Old November 26th 04, 03:51 AM
external usenet poster
 
Posts: n/a
Default

Kibo informs me that Chris Cox stated that:

In article , Mike
Russell wrote:

Chris Cox wrote:
Please do not feed the troll.

In article , Timo
Autiokari wrote nothing useful:


I respectfully disagree. Timo's contributions to the group are certainly of
value.


You mean his misinformation campaign?
Get real.


I have no idea whether he has any skill as a photographer, but the
comments I've seen him make on theoretical concepts are totally
clueless. He's not quite as deluded as The Preddiot, but he's in the
same weight-class.

--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
---^----^---------------------------------------------------------------
  #194  
Old November 26th 04, 03:51 AM
external usenet poster
 
Posts: n/a
Default

Kibo informs me that Chris Cox stated that:

In article , Mike
Russell wrote:

Chris Cox wrote:
Please do not feed the troll.

In article , Timo
Autiokari wrote nothing useful:


I respectfully disagree. Timo's contributions to the group are certainly of
value.


You mean his misinformation campaign?
Get real.


I have no idea whether he has any skill as a photographer, but the
comments I've seen him make on theoretical concepts are totally
clueless. He's not quite as deluded as The Preddiot, but he's in the
same weight-class.

--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
---^----^---------------------------------------------------------------
  #195  
Old November 26th 04, 03:51 AM
external usenet poster
 
Posts: n/a
Default

Kibo informs me that Chris Cox stated that:

In article , Mike
Russell wrote:

Chris Cox wrote:
Please do not feed the troll.

In article , Timo
Autiokari wrote nothing useful:


I respectfully disagree. Timo's contributions to the group are certainly of
value.


You mean his misinformation campaign?
Get real.


I have no idea whether he has any skill as a photographer, but the
comments I've seen him make on theoretical concepts are totally
clueless. He's not quite as deluded as The Preddiot, but he's in the
same weight-class.

--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
---^----^---------------------------------------------------------------
  #196  
Old November 26th 04, 04:18 AM
Michael A. Covington
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Posts: n/a
Default

"Linear" is being used in two different senses here. The f-stops are not on
a linear scale, but changing the f-stop is a linear operation
(multiplication).


  #197  
Old November 26th 04, 04:18 AM
Michael A. Covington
external usenet poster
 
Posts: n/a
Default

"Linear" is being used in two different senses here. The f-stops are not on
a linear scale, but changing the f-stop is a linear operation
(multiplication).


 




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