On 13 Nov 1998 04:12:19 GMT, sachse@msc.cornell.edu (Wolfgang Sachse) wrote:

>The Nikon 16mm/f2.8 fisheye lens has internal filters
>about 29mm in diameter which attach behind the rear
>element. Four filters come with the lens.
>
>Anybody know the Part Numbers for those filters?
>Colors available? Specifically I'm interested in
>the equivalent of Nikon's R60 Red filter in that
>configuration. Anybody know the Part Number?

1-800-NIKONUS should bring the answer... (and
the same filters are used on the 15mm f3.5).
BTW, the 16mm f3.5 has the filters built in,
on a wheel - unfortunately, neither has colors
available other than med. yellow, orange, red,
and UV for the f3.5; plus skylight, warming and
cooling for the f2.8, darn! ;-) (It would be
nice to have some conversion filters - but
gels can be taped to the lens rear...)