Reflectivity (not reflections) from the whitest white to the deepest black
(not deep shadows) covers a 5 stop range. That is to say in an evenly
illuminated scene of varied objects, the difference between the deepest
black and the whitest white is only 5 stops.
One environment I did a lot of photography with Tri-X where speed and
negative quality was a must involved indoor basketball. The lighting was
256:1 or 8 stops. It involved toe speed measurements of the film with
different developers and, once the developer was selected, the development
time and agitation method were determined to allow printing on #2 paper. In
this case, it was Acufine 1:1 for 3.5 minutes and 1 inversion every 30
seconds. The result was a very easy to print negative such that I printed in
batch mode. The projections first and development / washing second.
Bob
----- Original Message -----
From: "Anthony Farr" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, September 17, 2001 2:21 PM
Subject: Re: Filter Factors
> This technique gives you the lighting ratio but it doesn't take into
> account the varying reflectivities of different parts of the scene.
> This can only be done with a reflective meter, a spot meter being the
> type best suited to targeting discrete parts of a scene.
>
> Regards,
> Anthony Farr
-
This message is from the Pentax-Discuss Mail List. To unsubscribe,
go to http://www.pdml.net and follow the directions. Don't forget to
visit the Pentax Users' Gallery at http://pug.komkon.org .
