Re: rodinal developer for infrared

["Willem-Jan Markerink" <w.j.markerink@xxxxx>]

On 13 Sep 96 at 3:10, George L Smyth wrote:

> To my mind they're the same.  One can either meter with a value of EI32
> then open up two stops for the #25 filter, or meter through the filter
> with a value of EI8.  This whole matter unfortunately gets a bit
> confusing when the method of metering is not mentioned.  I always meter
> through the filter, as this method has always worked well for me.

George, I feel that you do something else than is implied in the 
above.
You say you take a bare reading with your (handheld?) meter set to 
EI32, and compensate +2 stops for the #25 filter. That is an 
effective IE of 8. 
Your TTF reading suggest you set your meter to EI8, and *then* take a 
reading through the filter, adding at least another +2 to +3 stops 
(depending on the red sensitivity of the meter). So you end up with 
an EI of at least 2, perhaps 1. 
There is some inconsistency here....


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<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]

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Topic No. 20