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UltravioletPhotography

Filter Discussions & Tests

Discuss any filter: UV, IR, BG, UVIR-Cut, Dual Bandpass or whatever. Show us your tests of a filter.

370 topics in this forum

  1. Help Needed: Filter Mounting on Steinheil Lens

    By OlDoinyo,   
    • 21 replies
    • 5.1k views

  2. Sharpness test. Baader U vs. ZWB1/S8612 stack

    By Nate,   
    • 21 replies
    • 355 views

  3. testing many of my filters + + 365nm led light torch

    By photoni,   
    • 20 replies
    • 440 views

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

    By KarlBlessing,   
    • 20 replies
    • 1.3k views

  5. Investigating IR-Leak from the Baader U-Filter

    By kogakunippon,   
    • 20 replies
    • 7.3k views

  6. Constructive Critique Welcome 260nm Illumination

    By colinbm,   
    • 20 replies
    • 437 views

  7. Spectrograph Study of a Rosco 74 Night Blue Filter

    By colinbm,   
    • 20 replies
    • 1.1k views

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

    By rfcurry,   
    • 20 replies
    • 678 views

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

    By Fandyus,   
    • 20 replies
    • 843 views

  10. IR, UV, UV+IR, UV+Vis, UV+Vis+IR, Vis: Which Is Which?

    By Andrea B.,   
    • 19 replies
    • 2.5k views

  11. A new UV Bandpass filter

    By rfcurry,   
    • 19 replies
    • 4.8k views

  12. Comparison between BG3-stacks and BG25 stacks

    By ulf,   
    • 19 replies
    • 741 views

  13. A Diffusion filter to remove UV hotspots

    By dabateman,   
    • 19 replies
    • 1.7k views

  14. [Filter Test] Hoya U330/U340/U360 and Schott UG1/UG5/UG1 Used as Unstacked Dual Band-Pass Filters

    By Andrea B.,   
    • 19 replies
    • 6.2k views

  15. Filter Transmission Chart: UVROptics MidMostU

    By dancingcat,   
    • 19 replies
    • 445 views

  16. [Filter Test] 340/10 #4 Edmund Hard-coated 340/10 Rear-mount Experiment

    By Andrea B.,   
    • 18 replies
    • 2.2k views

  17. Pinhole sunset

    By photoni,   
    • 18 replies
    • 395 views

  18. Kolari UV-pass - handheld test

    By lukaszgryglicki,   
    • 18 replies
    • 595 views

  19. [Filter Test] Blocking UV for Visible, Full-Spectrum Photos: Part #2 UV Stress Test

    By Andrea B.,   
    • 18 replies
    • 1.2k views

  20. [Filter Test] Hoya U340 with S8612, BG40 and BG39

    By Andrea B.,   
    • 17 replies
    • 10.9k views

  21. Double Invisible Vision 308nm filter - makes sense for UV-B only stack?

    By lukaszgryglicki,   
    • 17 replies
    • 673 views

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

    By ultrainfra,   
    • 17 replies
    • 967 views

  23. Is this oxidization or something else?

    By LookCloser,   
    • 17 replies
    • 614 views

  24. Lee 729 vs Lee 115

    By Nisei,   
    • 17 replies
    • 1.2k views

  25. Differences between a standard Sony A7 and a full spectrum

    By photoni,
    • 17 replies
    • 482 views
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