>seem to have the strengths (focal lengths) I am looking for, which are
>in the range of 4000mm (+0.25) to 1333mm (+0.75). Admittedly,
>these are ranges most often associated with eyeglass corrections, but I
>hope that they are not that hard to come by.
I am not sure but I thought you could, in fact, buy reading glasses that fall
into these categories (like at WalMart or local dept. or grocery store!) but
even if not as cheap as these I don't think (guess) that just plain diopter
lenses from an optometrist would too expensive, no?
Andy
