Assumptions: regular/normal weight is slightly (but noticeably) lighter that text/book weight fonts. Regular/normal weight tends to look anemic and high contrast at text sizes.
I assume that the text weight is suitable for longer passages of text, as in body text, and probably optimized for sizes 8-12 points.
Then when is it appropriate to use the normal/regular weight in design work. What's it for?
I ask this because of the way some FontFont packages are divided. Examples are Kievit 1 & 2, Milo 1 & 2, Max 1 & 2 and others. In these packages book/text and regular/normal are separated.
So what choice does the designer who may not have the money nor want the overhead of having both packages do?
Its not as simple as roman, italic, bold and bold italic.
And then to make matters more interesting take a look a Emigre Vista. In the "Love Letters" catalog the sample texts are set in the regular weight. The book weight is actually lighter than the regular weight. Go figure.
So what is the intended function of regular/normal weight? And is the book/text weight really important?
Thanks for helping ( I need it ),