RCE Foto

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bulb...

Macro

View gallery (13 photos)

bulb sent on December 11, 2022 (15:26) by Ricric74. 7 comments, 274 views. [retina]

, 15 sec f/16.0, ISO 100, tripod.

Primi test con luce ultravioletta, un genere davvero curioso...quando scienza e foto si incontrano. #UVIVF



View High Resolution 18.7 MP  



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avatarjunior
sent on December 11, 2022 (17:49) | This comment has been automatically translated (show/hide original)

What a great beautiful image, really curious, great work and excellent interpretation

avatarsenior
sent on December 12, 2022 (18:13) | This comment has been automatically translated (show/hide original)

Beautiful shot!
congratulations

avatarsenior
sent on December 12, 2022 (20:42) | This comment has been automatically translated (show/hide original)

Beautiful shot. May I know which uv-cut filter you used? Best regards Marzio

avatarjunior
sent on December 12, 2022 (21:11) | This comment has been automatically translated (show/hide original)

Thank you all for the comments!
@MarsCr : I mounted a Hoya UV / IR cut filter ... although I have the impression that it did not add great value to the shot (no more than the filter placed at the factory in front of the camera sensor); rather important is the quality of the UV emitted by the torches...

avatarsenior
sent on December 13, 2022 (0:12) | This comment has been automatically translated (show/hide original)

Well that's crucial, getting a band where the material responds by emitting luminescence. But it is equally important to remove the UV light from the shot otherwise the blue cast takes over. On my Sony it is not so easy to eliminate. Congratulations to you who have succeeded.

avatarjunior
sent on December 13, 2022 (0:28) | This comment has been automatically translated (show/hide original)

Mmmhhh... However, if I may, I believe that the blue dominant, if very invasive, is actually visible light reflected by the subject hit by wavelengths close to 400nm ... UV is invisible and occupies a range whose limit is around 395nm... What light source do you use? The ideal would be UV 365nm, quite "far" from the visible spectrum whose lower limit is, in fact, violet ... Clearly, the purer a source is, the less blue light it emits...

avatarsenior
sent on December 13, 2022 (7:18) | This comment has been automatically translated (show/hide original)

I self-built a small torch by replacing the original LED with a specific one for the uv and to be sure of the result I also replaced the glass with a UV-pass filter. But it's too little intense, I struggle a lot.
Thank you, very kind. There are not many people who try their hand at this type of photography, it's nice to have someone to compare yourself with. :-P PS you also have a fantastic gallery. Congratulations


RCE Foto

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