"Howard Lester" skrev i en meddelelse
news:nYqdnaeYm4VXz5vVnZ2dnUVZ_veinZ2d@dakotacomip. ..
"Max Perl" wrote

When you use a view camera for macro work you have long extention on the
bellows.
You then need to compensate for the lost light to calculate a proper
exposure.
Does somebody have an easy way to calculate the exposure compensation?

Calumet Photo used to (still does?) sell an inexpensive (under $10)
"close-up calculator." It consists of a square about 1-1/2" on each side
(one face is black, the other white), and a "ruler" that you place on the
ground glass. You place the small square piece up against your subject.
With the "ruler" you measure the size of the square as its image appears
on the ground glass and you read directly in f/stops the amount of extra
exposure required.


Then it must be this one?

http://www.calumetphoto.com/item/CC9201/