Glass selection tends to be both a science and an art. It is the intent of this paper to remove the GLQvAHC
"mystique" surrounding glass selection, primarily based on the chromatic properties of the glass, DsW`V~T
and to show via careful parametric analyses how we can optimally select glasses for lenses of V&oT':%q
different f/numbers, spectral bands, and performance requirements. The important roles of FFeRE{,
refractive index and Abbe number as well as partial dispersion will be considered. Using the 9H}iX0O
SCHOTT glass map, six separate and identifiable regions along with glasses within each region y}-S~Ov>I
will be discussed. The goal for this paper is to make glass selection easier to understand.