Filter Discussions & Tests

370 topics in this forum

1. [Filter Test SEU Gen2 #12] Summary

   By Andrea B., July 28, 2018   

   • Filters
   • 1 reply
   • 1.6k views
   • 
   • Andrea B.
   • July 28, 2018

2. When Infrared Is Not Invisible

   By OlDoinyo, December 4, 2014   

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

3. [Filter Test] AndreaU MK-I, BaaderU, Hoya U360 Stack, StraightEdgeU (v2016) and The Standards

   By Andrea B., August 26, 2016   

   • Filters
   • 1 reply
   • 1.5k views
   • 
   • Andrea B.
   • August 26, 2016

4. [Filter Test] BaaderU, U360+BG40, U360+S8612: IR Leak Test

   By Andrea B., February 8, 2016   

   • Filters
   • 1 reply
   • 2.3k views
   • 
   • Andrea B.
   • February 8, 2016

5. MidOpt StablEDGE® filters

   By Stefano, March 8   

   • Filters
   • 1 reply
   • 461 views
   • 
   • Lou Jost
   • March 9

6. Filter for UVC Tube Lights ?

   By colinbm, March 23
   • 1 reply
   • 349 views
   • 
   • lukaszgryglicki
   • March 23

7. [Filter Test] Baader-U, B+W 403 + S8612, B+W 403 + BG39, Precision-U(old)

   By Andrea B., July 18, 2013   

   • Filters
   • 1 reply
   • 8.9k views
   • 
   • Nico
   • July 18, 2013

8. Kolari UV-Pass Filter: Update

   By Andrea B., December 21, 2021   

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

9. Now for very wide angles...

   By rfcurry, November 5, 2015   

   • Filters
   • 0 replies
   • 1.1k views
   • 
   • rfcurry
   • November 5, 2015

10. Miniature filter array for spectroscopy with mobile phone cameras

    By enricosavazzi, July 13, 2017   

    • Filters
    • 0 replies
    • 645 views
    • 
    • enricosavazzi
    • July 13, 2017

11. [Filter Test] AndreaU UV-Pass

    By Andrea B., May 3, 2015   

    • Filters
    • 0 replies
    • 2k views
    • 
    • Andrea B.
    • May 3, 2015

12. Neutral Density Filters for Infrared photography

    By mathieucarbou, March 19, 2021   

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

13. New UV-Pass Filter from UVR Optics: the AndreaU MK II remake of the AndreaU

    By Andrea B., August 16, 2016   

    • Filters
    • 0 replies
    • 1.5k views
    • 
    • Andrea B.
    • August 16, 2016

14. [Filter Test] StraightEdgeU (v2016) vs. BaaderU: The Evil Clown of Middletown

    By Andrea B., August 27, 2016   

    • Filters
    • 0 replies
    • 1.6k views
    • 
    • Andrea B.
    • August 27, 2016

15. [Filter Test] Schott BG40 for Colour Correction in Converted Camera

    By Andrea B., January 31, 2016   

    • Filters
    • White Balance
    • 0 replies
    • 1.4k views
    • 
    • Andrea B.
    • January 31, 2016

16. [Filter Test] StraightEdgeU (v2016) Summary of Recent Tests

    By Andrea B., September 3, 2016   

    • Filters
    • 0 replies
    • 952 views
    • 
    • Andrea B.
    • September 3, 2016

17. Visual Bandpass Filters

    By Cadmium, September 4, 2016   

    • Filters
    • 0 replies
    • 1.5k views
    • 
    • Cadmium
    • September 4, 2016

18. [Filter Test] Hoya U330 as a Dual Bandpass Filter

    By Andrea B., July 27, 2015   

    • Filters
    • 0 replies
    • 995 views
    • 
    • Andrea B.
    • July 27, 2015

19. [Filter Test] 340AF15 UV-Pass

    By Andrea B., July 18, 2013   

    • Filters
    • 0 replies
    • 1k views
    • 
    • Andrea B.
    • July 18, 2013

20. [Filter Test] Baader-U, Hoya 340 + S8612, Hoya 360 + S8612, Precision-U (old)

    By Andrea B., July 19, 2013   

    • Filters
    • 0 replies
    • 3.7k views
    • 
    • Andrea B.
    • July 19, 2013