lightroom 3 and RGB as a densitometer

atlcruiser

Part Yeti
Local time
12:06 PM
Joined
Dec 8, 2009
Messages
1,183
Ok...I will admit I was a bit bored this afternoon
smile.gif


I wanted to find the best devl times for HP5+ in rollo pyro at 800 ei. I shot 5 frames each the exact same in 45. There is a grey card, a pure white envelope in the foreground then the background is all zone 4-1.

I developed each in one minute increments @ 12min-16min the same way each time. My result was very clear and I like the 14 min the best overall. That should be the end of it
smile.gif


So in LR3 on the grey card, zone V, at 12 min I get 44.2% on RGB.

The zone III at 12min is 6.9%

The grey card, zone v, at the 14min time is 37.0%

The zone III at 14min is 5.6%

What exactly does that mean? How do I use that info to help me know what the density is?

I want to make sure I am picking the best time based on more than my limited opinion
smile.gif
 
Back
Top Bottom