lmost as easy. Try the
following commands to generate DOTF data at fractional object point
Y=.1 and X=.2:</p>

<p><strong>
    FOB, .1 .2<br>
    CAPFN (generates the complex aperture function)<br>
    DOTF (generates the MTF)<br>
    PLTDOTF (plots the MTF)<br>
</strong></p>

<h2>Lesson #11 - Basic Tolerance Analysis</h2>

<p>This next lesson describes how to perform a simple tolerance
analysis upon the Cooke triplet lens of example 1. In this analysis,
we will determine how two aberrations, third order sp