OK, bear with me… this is actually much deeper, technically, than I normally venture in this column, but it’s an important topic to understand.
This month, I’m going to talk about modulation transfer function. It’s a fun mouthful of words; try it—modulation transfer function. You can almost hear Marvin the Martian asking, “Where is my elunium pu36 modulation transfer function?”
OK, maybe that’s just me…
Modulation transfer function (MTF) is a methodology for measuring the resolving power of a lens, or an entire imaging system for that matter.
The Basics of Mtf
Let’s break it down:
- What are we modulating?
- What are we transferring?
No lens is 100% perfect. In fact, it’s physically ...