Hi
I would like to project onto a wall to get a very large macro image for paper negs but am having difficulty
with the math
I have held a lens up and got an image just by luck but now trying it again i can't get a big image
how do i work out the object to lens to wall ?
if i was using an actual view camera then i would just go for maximum extension then then
move the whole camera in to the subject with my head under a dark cloth but because of the scale involved
this is not possible
I plan on fixing the lens on a standard and rail for fine focus in a doorway then blacking out around it
then going out the front of my house and around to the back to get to the image
but i need to work out the basic distances to start with
i have a few long apo ronars that should be good for this but there is probably only a millimetre between sharp and totally out of focus ...
i know i will need a lot of light which is not a problem and would need time let my eyes to adjust in the dark side to see the image
robin
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