On Tue, 29 Sep 1998 19:55:50 -0400, "Titus" wrote:

>I have a Tokina 100-300F4 and Tokina 17MM that both take 77mm filters
>I want to buy the Nikon 24-120 that takes 72mm filters
>In order to save some money can I purchase just a 77mm filter and
>use it through an adapter 77to72 on the 24-120 lens?
>If yes, who makes these adapters and where can I buy one
>How expensive are they?

You want a "step *UP*" ring (not a "step down" ring...), 72->77mm.
I would ordinarily recommend B&H for these, but they were stocking
the really terrible Bowers rings (poor machining, very sticky or
useless threads). Try for a Tiffen ring at B&H, or at Camera World of
Oregon, if they carry it. It will not be cheap (about the cost of a
filter), but then everything will match, and it is a good idea to use
step up rings for filters on wide angle lenses, anyway, to avoid
vignetting. BTW, step up rings can also be used to put larger and deeper
shades on lenses than would normally fit, for front element protection
from rain and snow.