----- Original Message ----- From: "Mark Cassino" Subject: Re: 50mm lenses test pages: help with japanese translation (help with math)
I> Is my math wrong on that, or are most of these lenses equal on the *ist-D / DS? And for that matter, more or less equal with most films except the highest performing slide films (I seem to recall that Velvia could resolve something like 160 lpm? Or maybe that was DPI... My memory is about as good as my math.)
The high resolution number is a 1000:1 (10 stop knife edge) test target.
For a more practical resolution, you want to look at the 1.6:1 (about a 1 stop transition) resolution numbers.
You will note, they are a much less impressive set of numbers.
William Robb
