Midpack
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
If someone had a +2.25 correction for reading and a +1.00 correction for distance, how would she determine the best correction for an object 3.5 to 5 feet away? I could interpolate, but I don't know what distance is associated with the +1.00 correction, or if it's a linear relationship. I could resort to trial and error but I thought I'd ask here. I haven't found the right words with Google to yield an answer.