Glass selection tends to be both a science and an art. It is the intent of this paper to remove the j**[[
"mystique" surrounding glass selection, primarily based on the chromatic properties of the glass, Ax&!Nz+?
and to show via careful parametric analyses how we can optimally select glasses for lenses of FB[b]+t`D{
different f/numbers, spectral bands, and performance requirements. The important roles of ri{*\LV*@
refractive index and Abbe number as well as partial dispersion will be considered. Using the W_2;j)i
SCHOTT glass map, six separate and identifiable regions along with glasses within each region 9VxM1-8Gs
will be discussed. The goal for this paper is to make glass selection easier to understand.