Filter Discussions & Tests

370 topics in this forum

1. Wanted - Andrea U 52mm filter Please ? 1 2

   By colinbm, December 8, 2013   

   • Filters
   • 26 replies
   • 4.3k views
   • 
   • Alaun
   • December 12, 2013

2. What do these UV 330BP93 false colors mean?

   By rfcurry, September 30, 2022   

   • Filters
   • 20 replies
   • 676 views
   • 
   • rfcurry
   • March 20, 2023

3. What filter for UV < 320 nm? 1 2

   By lukaszgryglicki, July 3, 2022   

   • Filters
   • 37 replies
   • 734 views
   • 
   • lukaszgryglicki
   • July 10, 2022

4. What ionic filter stack is closest to Baader U performance?

   By Doug A, October 13, 2021   

   • Filters
   • 9 replies
   • 2k views
   • 
   • ulf
   • October 16, 2021

5. What is everyone doing with their 8mm ZWB1 1 2 3

   By colinbm, August 24, 2021   

   • Filters
   • 72 replies
   • 2.6k views
   • 
   • LarsHP
   • April 8

6. What is the deal with Optima & ZBW glass? 1 2

   By Andrea B., September 13, 2016   

   • Filters
   • 27 replies
   • 5.5k views
   • 
   • bvf
   • January 15, 2020

7. What is your favorite UV-pass solution, and why?

   By Fandyus, July 5, 2021   

   • Filters
   • 14 replies
   • 609 views
   • 
   • Fandyus
   • July 6, 2021

8. What tests can I do to determine the UV limit of my camera ? 1 2

   By colinbm, November 16, 2023
   • 34 replies
   • 907 views
   • 
   • ulf
   • December 11, 2023

9. What would you suggest as a beginner affordable UV pass filtering solution 1 2

   By microbat52, December 19, 2020   

   • Filters
   • 37 replies
   • 1.7k views
   • 
   • Andrea B.
   • January 25, 2021

10. When Infrared Is Not Invisible

    By OlDoinyo, December 4, 2014   

    • Filters
    • Infrared
    • 1 reply
    • 1.4k views
    • 
    • colinbm
    • December 4, 2014

11. Where does "red" come from?

    By enricosavazzi, August 16, 2014   

    • Filters
    • 3 replies
    • 2.2k views
    • 
    • Andrea B.
    • August 16, 2014

12. Where to buy filter rings

    By Marc del Piro, December 8, 2023
    • 12 replies
    • 480 views
    • 
    • lukaszgryglicki
    • January 22

13. Which B+W filter competes with Tiffen UV 2E?

    By Doug A, June 3, 2023   

    • Filters
    • 6 replies
    • 330 views
    • 
    • Doug A
    • June 3, 2023

14. Which entry level filter for UV portraits? 1 2

    By Nisei, March 19, 2020   

    • Filters
    • 36 replies
    • 2k views
    • 
    • Andrea B.
    • March 25, 2020

15. Why are FL-D and FL-W filters not labeled consistently across manufacturers?

    By ultrainfra, November 10, 2020   

    • Filters
    • 17 replies
    • 966 views
    • 
    • dabateman
    • November 21, 2020

16. Why Don't UV / Protection Filters Cut UV ? 1 2

    By colinbm, July 2, 2020   

    • Filters
    • TriColour
    • 41 replies
    • 1.9k views
    • 
    • colinbm
    • July 8, 2020

17. Wratten 2A vs 2E for UVIVF?

    By Doug A, August 18, 2022   

    • Filters
    • Fluorescence
    • 2 replies
    • 330 views
    • 
    • Andy Perrin
    • August 18, 2022

18. Xume filter adapters

    By cmoody, December 16, 2014   

    • Filters
    • 9 replies
    • 2.5k views
    • 
    • ulf
    • November 1, 2018

19. yellow-green glass 1 2

    By ins13, March 21, 2019   

    • Filters
    • 33 replies
    • 2.6k views
    • 
    • ins13
    • March 29, 2019

20. Zomei IR-filter. Transmission graphs

    By ulf, August 25, 2017   

    • Filters
    • Infrared
    • 6 replies
    • 4.5k views
    • 
    • ulf
    • August 29, 2017