View Single Post
Old 11-03-2007, 11:00 PM   #33
Senior Member
trainboysd40's Avatar
Join Date: Nov 2005
Location: Calgary, Alberta on the CP Laggan Subdivision
Posts: 2,048
Send a message via MSN to trainboysd40

Originally Posted by JRMDC
Jim, it's cumulative exposure to light that matters. Dark sky can't mask because dark sky does not increase the exposure. If you tried a double exposure and the second image were blue sky instead of night and a moon, you would end up with overexposed blue sky in the final image and a loss of everything in the first exposure.

Put another way, a dark exposure does not paint the negative black! It's the absence of light, not the presence of a black shade of light.
That's what I get for not refreshing after leaving for half an hour!
got a D5 IIi and now he doesnt afread fo 12800 iSO
Youtube (Model Railway, Vlogs, Tutorials, and prototype)
My Website
Obligatory link to shots on RP, HERE
trainboysd40 is offline   Reply With Quote