Conversion lens calculator? Advice?
Yo. I have a JVC RS 4910. If I put one of the Navitar Mini Screenstar .65X lenses in front of it (which I think will work?), what is the best way to do the math for that?
It gives a 50% increase... have I read that correctly?
So if I'm looking to project a 110" x 62" image from the closest possible distance... and the Projector Calculator tells me that is 12' 10"...
And here is where I get confused. Do I just multiply 12' 10" by .65? Or by 50%? Or?
Or is there a limitation based on the size of the Mini lens that prevents me from placing the projector as close as possible?