Quote Originally Posted by ic-racer View Post
To figure the paper contrast to use proceed as follows:
Use the 'white' channel and measure the contrast range from thinnest area of the negative you want detail to the densest portion using the spot probe.

Sometimes it is easier said than done because you may need to move the negative around in the enlarger to minimize cosine falloff which would result if you move the probe around the baseboard. Since it is just an estimate of your printing contrast needs, a little inaccuracies may be tolerated. Once you have your negative range as it is projected on the baseboard, you look up the paper contrast needed in your chart of paper contrast range values you previously made using a contact printed step wedge.

If you measure your negative density range with a densitometer ( not what you have indicated you are going to do), you construct your printing paper lookup table with a projected step wedge.
If you measure your negative density on the baseboard ( as you have indicated you want to do) , you construct your printing paper lookup table with a contact printed step wedge.
Hey ic-racer
Looks like I am going to have to make a bunch of test for contrast. I don't have a step wedge to use. I was hoping I could use the zone system to set this thing up with, so it looks like some printing is in order to make a scale of what the paper will handle. I could shoot a zone system wedge and print them. I have a couple of books with the zones table in them. I was hoping I wouldn't have to spend a lot of time printing if I could just use a standard negative printed like I want it to look and somehow set the analyzer up for this look.
Thanks for the info.
By the way, I looked at your profile and I see you race 1/8 scale. I raced dirt oval for a number of years with the 1/8 and custom works cars. Never did get real good with them. Lots of fun. Not many tracks now locally.