Z 800mm PF 'Drop in Filter'?

[mike_halliwell]

I'm kinda surprised that the optical design doesn't seem to mind if there's a filter in place or not. Most long teles from the past needed one.

Something to do with the more telecentric nature of Z lenses maybe?

I'm thinking of putting in a plain filter just to stop an dust/debris falling such a long way into the lens body.

[ShunCheung]

There is an old saying, “If it ain’t brok, don’t fix it.” A high-quality NC filter probably won’t degrade the image by much, and the difference is not discernible, but it sure won’t improve it.

[rodeo_joe1]

Just curious. Have Nikon stuck with the same 39mm filter they used as a 'drop-in' on the old Reflex Nikkors and large-aperture teles from the F-mount days? 

TBH, I could never detect any difference in IQ with the 39mm UV filter fitted or not, apart from a slight shift in focus, but since all the lenses taking a rear filter focussed past infinity, that was no issue. 

Edited February 10 by rodeo_joe1

[ilkka_nissila]

13 minutes ago, rodeo_joe1 said:

Just curious. Have Nikon stuck with the same 39mm filter they used as a 'drop-in' on the old Reflex Nikkors and large-aperture teles from the F-mount days? 

TBH, I could never detect any difference in IQ with the 39mm UV filter fitted or not, apart from a slight shift in focus, but since all the lenses taking a rear filter focussed past infinity, that was no issue. 

No, the 800 takes 46 mm and some other lenses take 52 mm etc. It just depends on the lens.

[mike_halliwell]

46mm, that well known common filter size!

At least they didn't make it a Nikon Special 45mm thread filter and charge £80 for a standard UV/clear filter and £200 for a rotating polariser housing.