Re: Reciprocity Problem

Hi Jeff,

www.curvefit.com goes into a bit of detail if you're interested in the math
- or maybe try a google search on linear regression and non-linear
regression.

Otherwise, I have a bit of mathematical ability and if you provide me with
your data I could construct an equation for a curve. You might need a
pocket calculator to evaluate the equation though.

If you're interested in the math start by learning linear regression - it's
fairly simple. You should use non-linear regression for your reciprocity
failure data though (since reciprocity failure is, of course, a non-linear
behaviour). Feel free to ask more questions. If you can't tell - I like
math.

Eric

>From: Jeff Dilcher <root@hiddenworld.net>
>
>*** Warning ***
>*** Technical Question Follows **
>** press delete key if technical questions bother you **
>
>
>I have a technical question, that, perhaps someone on
>the list can help me with. Please respond
>directly if you like.
>
>I am trying to develop a mathematical function which will
>help determine reciprocity compensations.
>
>Initially, I would like to be able to submit a small set of
>reference values (metered exposure times along with
>exposure time compensation for reciprocity). Using these,
>I would like be able to enter in any exposure value, and
>get a corresponding compensated value on the reciprocity
>"curve".
>
>I am trying to boil this down into an algebraic equation
>as easily as is possible. I have quickly reached the
>endpoint of my math abilities. Can anyone provide a clue
>for me?
>
>
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com
Received on Tue Jun 19 12:40:43 2001