Filter Discussions & Tests

370 topics in this forum

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

   By Fandyus, July 5, 2021   

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

2. Interesting 254nm "narrowband" filter on AliExpress

   By Fandyus, July 3, 2021   

   • Filters
   • 5 replies
   • 419 views
   • 
   • dabateman
   • July 4, 2021

3. [Filter Test] 340/10 #6 Progress was made, finally. UPDATE: Progress was then lost. 1 2

   By Andrea B., July 1, 2021   

   • Filters
   • 43 replies
   • 1.2k views
   • 
   • Andrea B.
   • July 8, 2021

4. A rainbow of shots on a Panasonic 20mm f/1.7 (1st version)

   By KarlBlessing, June 16, 2021   

   • Filters
   • 20 replies
   • 1.3k views
   • 
   • ulf
   • June 20, 2021

5. U-330 stacks/graphs

   By Cadmium, June 9, 2021   

   • Filters
   • 9 replies
   • 1.4k views
   • 
   • Cadmium
   • June 13, 2021

6. Relatively cheap UV bandpass filters 1 2

   By Stefano, June 3, 2021   

   • Filters
   • 29 replies
   • 1.4k views
   • 
   • JMC
   • June 28, 2021

7. B+W Filter Designations

   By Shane, June 1, 2021   

   • Filters
   • 10 replies
   • 1.7k views
   • 
   • Shane
   • June 21, 2021

8. Transmission curves for KG3 1mm / 1.25mm / 1.5mm ?

   By yann_p, May 31, 2021   

   • Filters
   • 3 replies
   • 301 views
   • 
   • Cadmium
   • May 31, 2021

9. KolariU + Nikon 50/1.8 AIS

   By Andrea B., May 28, 2021   

   • Filters
   • Lens
   • 14 replies
   • 415 views
   • 
   • Andy Perrin
   • May 30, 2021

10. coating ionic filters at home

    By rfcurry, May 28, 2021   

    • Filters
    • 6 replies
    • 386 views
    • 
    • rfcurry
    • May 28, 2021

11. Question about Putty-Mounted Back Filters

    By Andrea B., May 21, 2021   

    • Filters
    • 3 replies
    • 321 views
    • 
    • Andrea B.
    • May 21, 2021

12. Mounting Filters Behind M42 Lens

    By colinbm, May 18, 2021   

    • Filters
    • 7 replies
    • 738 views
    • 
    • Andrea B.
    • May 19, 2021

13. QB39+ZWB1: Possibly the cheapest way to get true UV? (~26€)

    By Fandyus, May 12, 2021   

    • Filters
    • 20 replies
    • 843 views
    • 
    • Fandyus
    • May 14, 2021

14. Omega 360DF40 on eBay

    By Andy Perrin, May 6, 2021   

    • Filters
    • 7 replies
    • 397 views
    • 
    • dabateman
    • May 7, 2021

15. Anyone own this filter? 1 2

    By Fandyus, April 24, 2021   

    • Filters
    • 29 replies
    • 879 views
    • 
    • Cadmium
    • April 25, 2021

16. Hunt for the Blue Tree (an impossible false-color look?) 1 2

    By Christoph, April 20, 2021   

    • Filters
    • 28 replies
    • 1.6k views
    • 
    • Unscenerie
    • February 10, 2023

17. New Chinese U-venus filters.

    By dabateman, April 9, 2021   

    • Filters
    • 4 replies
    • 862 views
    • 
    • Andy Perrin
    • April 9, 2021

18. Fixing a filter to the lens

    By nurWolfgang, April 9, 2021   

    • Filters
    • 8 replies
    • 359 views
    • 
    • nurWolfgang
    • April 9, 2021

19. Another way to rear-mount filters

    By bvf, April 3, 2021   

    • Filters
    • 13 replies
    • 606 views
    • 
    • nfoto
    • April 7, 2021

20. Neutral Density Filters for Infrared photography

    By mathieucarbou, March 19, 2021   

    • Filters
    • Infrared
    • 0 replies
    • 428 views
    • 
    • mathieucarbou
    • March 19, 2021

21. Easier Aerochrome: The Triple Bandpass TB550/660/850 1 2 3 4

    By Christoph, March 3, 2021   

    • Aerochrome
    • Filters
    • 84 replies
    • 4.4k views
    • 
    • photoni
    • April 5, 2023

22. Historical 365nm bandpass filter

    By JMC, January 19, 2021   

    • Filters
    • 9 replies
    • 623 views
    • 
    • dabateman
    • January 20, 2021

23. 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

24. Suspicious filters on eBay

    By Andy Perrin, December 18, 2020   

    • Filters
    • 8 replies
    • 503 views
    • 
    • Andrea B.
    • December 18, 2020

25. Schott S8612 coated vs uncoated test

    By Cadmium, November 26, 2020   

    • Filters
    • 15 replies
    • 1.2k views
    • 
    • Cadmium
    • February 7, 2021