Filter Discussions & Tests

370 topics in this forum

1. 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

2. Filter Thickness

   By Adrian, July 28, 2016   

   • Filters
   • 3 replies
   • 1.2k views
   • 
   • Cadmium
   • July 29, 2016

3. BG24A stack

   By Cadmium, May 7, 2016   

   • Filters
   • 5 replies
   • 2.4k views
   • 
   • Cadmium
   • May 12, 2016

4. Using Hoya U340 for landscape photography

   By DonPilou, May 1, 2016   

   • Filters
   • Infrared
   • (and 2 more)

     Tagged with:

     • Filters
     • Infrared
     • Lighting
     • White Balance
   • 11 replies
   • 4.9k views
   • 
   • igoriginal
   • May 10, 2016

5. Matched Filter Sets and Focus Shift

   By JCDowdy, April 14, 2016   

   • Filters
   • 4 replies
   • 1.4k views
   • 
   • JCDowdy
   • April 25, 2016

6. Omega 330WB80

   By Andy Perrin, April 15, 2016   

   • Filters
   • 13 replies
   • 3.2k views
   • 
   • Andy Perrin
   • April 18, 2016

7. Problems with small dichroic filter

   By Andy Perrin, April 12, 2016   

   • Filters
   • 17 replies
   • 4k views
   • 
   • Andrea B.
   • April 14, 2016

8. Rosco Permacolor #3660 Dichroic UV Pass

   By argus, March 31, 2016   

   • Filters
   • Fluorescence
   • 3 replies
   • 2.9k views
   • 
   • Cadmium
   • March 31, 2016

9. Discussion: UG5/U-330 + S8612 Filter Stacks, Part 2

   By Andrea B., October 26, 2015   

   • Filters
   • Multispectral
   • (and 1 more)

     Tagged with:

     • Filters
     • Multispectral
     • Insect.Animal Vision
   • 12 replies
   • 5.5k views
   • 
   • Cadmium
   • March 17, 2016

10. First Experimental UV Kit Questions

    By djt, March 4, 2016   

    • Filters
    • 16 replies
    • 3.9k views
    • 
    • djt
    • March 10, 2016

11. Baader U, U-360, UG11, ZWB1 stacks compared 1 2

    By Cadmium, January 9, 2016   

    • Filters
    • 40 replies
    • 15.1k views
    • 
    • Cadmium
    • February 13, 2016

12. [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

13. How do I fit the filter to the lens? 1 2

    By jknights, January 18, 2016   

    • Filters
    • 26 replies
    • 5.9k views
    • 
    • jknights
    • February 3, 2016

14. [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

15. [Filter Test] Hoya B410: Quick Look

    By Andrea B., January 27, 2016   

    • Filters
    • 10 replies
    • 4.3k views
    • 
    • colinbm
    • January 28, 2016

16. Filters available in larger sizes?

    By OlDoinyo, January 2, 2016   

    • Filters
    • 11 replies
    • 3.6k views
    • 
    • Cadmium
    • January 10, 2016

17. Summer Sunflower with Bee - IR

    By Cadmium, December 27, 2015   

    • Filters
    • Infrared
    • 4 replies
    • 1.4k views
    • 
    • Cadmium
    • December 29, 2015

18. Astrodon Sloan 1.25" U' filters - $100 closeout 1 2

    By lost cat, December 2, 2015   

    • Filters
    • 40 replies
    • 8.9k views
    • 
    • Andrea B.
    • December 18, 2015

19. [Filter Test] BaaderU: Looking for Red Leak

    By Andrea B., October 20, 2015   

    • Filters
    • 24 replies
    • 7.8k views
    • 
    • Cadmium
    • December 10, 2015

20. [Filter Test] 293BP10: It's Rough Down There Below 300 nm

    By Andrea B., March 12, 2015   

    • Filters
    • 6 replies
    • 3.4k views
    • 
    • Andrea B.
    • December 1, 2015

21. Now for very wide angles...

    By rfcurry, November 5, 2015   

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

22. Discussion: UG5 + IR-Cut Filter Stack, Part 1 1 2

    By igoriginal, October 22, 2015   

    • Insect.Animal Vision
    • Filters
    • (and 1 more)

      Tagged with:

      • Insect.Animal Vision
      • Filters
      • Multispectral
    • 39 replies
    • 10.4k views
    • 
    • Andrea B.
    • November 5, 2015

23. Surplus - Bandpass Filters, Andover Optics

    By colinbm, October 21, 2015   

    • Filters
    • 5 replies
    • 1.9k views
    • 
    • igoriginal
    • October 22, 2015

24. [Filter Test] B+W 092 IR-Pass: Test for Red Leak

    By Andrea B., October 20, 2015   

    • Infrared
    • Filters
    • 5 replies
    • 1.8k views
    • 
    • nfoto
    • October 22, 2015

25. [Filter Test] B+W 099 Dual Bandpass: Orange + Red + Infrared

    By Andrea B., July 23, 2015   

    • Filters
    • Infrared
    • 5 replies
    • 2.5k views
    • 
    • Andrea B.
    • October 22, 2015