View Single Post
  #6  
Old 26-12-2011, 09:39 PM
Merlin66's Avatar
Merlin66 (Ken)
Registered User

Merlin66 is offline
 
Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
No, not really....
For "family" shots it works very well and achieves acceptable focus (The difference in focus with only one filter removed is only 0.3mm)
I actually removed both filters to achieve maximum coverage (380nm through to NIR) for spectroscopy.
I can add an Astronomik MC clip in filter for normal shots ( only works with EF lenses) and retain focus for objective grating spectroscopy.
You don't need the additional UV-IR filter for astro work.
Reply With Quote