Books on Lens

[Reallywannabe]

Hi All,

just wondering, is there any books which i can read on the lens?
Actually i just want to know what all those Number Mean (XXmm-XXmm FX)

Thanks in Advance

 

[night86mare]

Here's a web article.. Not exactly a book.

http://en.wikipedia.org/wiki/35_mm_film

There,