> Dave Brooks, in a post that I never received but which I saw in the
> archives, was chatting about fisheyes in general, the Zenitar 2.8 16mm
> in particular, and filters.
I find i am doing the same thing. I see a lot of missing posts in the archives.
>
> My Zenitar has a sort of filter ring, that's cut away on the sides, so
> there's only threading at the top and bottom of the from element.
> Presumable, the cutaways are to prevent vignetting. How easily one
> could install a filter with such an arrangement is likely another
> story.
>
> Certainly, any filter, no matter how slim, would vignette, but if you
> plan on using it on your *istD, that may not be an issue.
Possible,and yes maybe for the istD,but i was thinging more on the PZ-1 for the
IR
pictures,or a
screwmopunt one as i use the SP500 sometimes for IR.
>
> The lens came with four tiny filters that screw on the back, green,
> red, and two clearish ones (UV and haze?). I have no idea if the red
> is #25, but comparing it to the much larger #25 that I have, I'd say
> "no". Whether you can get #25 filters of that size to screw onto the
> back of them, I don't know, as I have no idea if that's a standard
> size filter or not.
I found one last night that lsited the filters and IIRC the red was around and
8 or 12,
something
like that(it was late),G.
>
> Next time we do a TOPDML, I'll have it with me, and you can take a look.
Sounds good
>
>
> BTW thanks for your comments on my photo. Glad you liked.
Yer welcome:-)
Dave
>
> cheers,
> frank
>
>
> --
> "Sharpness is a bourgeois concept." -Henri Cartier-Bresson
>
