Filter Discussions & Tests

370 topics in this forum

1. Mystery UV narrow band dichroic filter

   By colinbm, October 3, 2020   

   • Filters
   • 4 replies
   • 339 views
   • 
   • colinbm
   • October 4, 2020

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

   By Doug A, June 3, 2023   

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

3. Wratten 2A vs 2E for UVIVF?

   By Doug A, August 18, 2022   

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

4. Lee #172 + GRB3

   By Picareto, May 26, 2022   

   • Filters
   • Aerochrome
   • 4 replies
   • 323 views
   • 
   • Picareto
   • June 4, 2022

5. Question about Putty-Mounted Back Filters

   By Andrea B., May 21, 2021   

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

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

   By yann_p, May 31, 2021   

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

7. "Still Life" dehydrated sunflower with various filters

   By photoni, November 10, 2021   

   • Filters
   • 3 replies
   • 299 views
   • 
   • Andy Perrin
   • November 10, 2021

8. Goldie with Lee scuba blue + Kenko ya3 (orange)

   By Picareto, May 21, 2022   

   • Aerochrome
   • Filters
   • 9 replies
   • 297 views
   • 
   • Andy Perrin
   • May 28, 2022

9. Kolari UV-Pass Filter: Update

   By Andrea B., December 21, 2021   

   • Filters
   • 1 reply
   • 292 views
   • 
   • Andy Perrin
   • December 21, 2021

10. Kolari UV / IR Cut Pro 2 Filter.

    By colinbm, May 4, 2022   

    • Filters
    • 10 replies
    • 286 views
    • 
    • Andrea B.
    • May 12, 2022

11. Filter simulator using real world data in software

    By Daniel Gawędzki, December 14, 2022   

    • Filters
    • 3 replies
    • 283 views
    • 
    • Andy Perrin
    • December 20, 2022

12. 3 filter stacked

    By Picareto, November 7, 2021   

    • Filters
    • 12 replies
    • 281 views
    • 
    • Christoph
    • November 9, 2021

13. Hoya R72 blotchiness when pushed

    By VideoJohn, June 7, 2023   

    • Filters
    • 9 replies
    • 278 views
    • 
    • Nate
    • June 8, 2023

14. New picture Lee#172+GRB3

    By Picareto, May 28, 2022   

    • Filters
    • 7 replies
    • 276 views
    • 
    • colinbm
    • June 4, 2022

15. New CuRB chart on UVR Optics

    By lukaszgryglicki, August 25, 2022   

    • Filters
    • 5 replies
    • 265 views
    • 
    • lukaszgryglicki
    • August 25, 2022

16. Koloari UV-pass - handheld test

    By lukaszgryglicki, September 4, 2021   

    • Filters
    • 3 replies
    • 247 views
    • 
    • Andy Perrin
    • September 4, 2021

17. good deal for a 340nm bandpass filter on eBay

    By Fandyus, August 10, 2022   

    • Filters
    • 5 replies
    • 236 views
    • 
    • Andy Perrin
    • August 11, 2022

18. Lee #729

    By Picareto, January 15, 2022   

    • Filters
    • 2 replies
    • 212 views
    • 
    • Cadmium
    • January 16, 2022

19. Variable ND filter for Vis/IR

    By Nate, February 26, 2023   

    • Filters
    • 4 replies
    • 205 views
    • 
    • Andrea B.
    • February 28, 2023

20. Quartz coverslips really needed for UV-C microscopy?

    By Lou Jost, October 29, 2023
    • 3 replies
    • 147 views
    • 
    • Lou Jost
    • October 29, 2023