John Robertson
Well-known
Kevin, I'm looking at my lens and the stuff that came with it. The "instruction manual" is just a leaflet which describes what the various bits of the lens are, its very very basic, and you are not missing much by not having it!! The two lines you mention are the depth of field at 4.5. this lens is very easy to get used to, I set the infinity mark (the "8" on its side ) next to the value of the aperture I'm using to get the max depth of field. You really don't need R/F coupling the depth of field is huge. f4.5 its from about 5feet to infinity, at f16 about 10inches to infinity.