Andrea B. Posted January 19, 2016 Share Posted January 19, 2016 Blum, A.G. (2016) Gerbera L. sp. (Asteraceae) Gerbera. Flowers photographed in ultraviolet and visible light with bee vision simulation. Middletown, New Jersey, USA23 October 2016Cultivar in home garden Comment: Although primarily UV-dark, this vivid red Gebera shows some UV-brightness on the tips of open disk flowers. The Visible yellow, UV-absorbing center of the flower is a green colour in the Bee Vision simulation to illustrate that a bee might have only its green receptor stimulated by this portion of the flower. Reference:1. Missouri Botanical Garden (2015) Gerbera jamesonii http://www.missourib...kempercode=a5182. Wikipedia (Jan 2015) Gerbera. Wikimedia Foundation, San Francisco, CA. https://en.wikipedia.org/wiki/GerberaMy specimen is a generic variety sold at a garden store, so I was not sure what to offer as a reference. Equipment [Nikon D600-broadband + Nikon 105mm f/4.5 UV-Nikkor] Please click these photos up to their 1200px wide version to see the details. Visible Light [f/8 for 1/320" @ ISO 200 in Sunlight with Baader UVIR-Block Filter] Ultraviolet Light [f/8 for 1.3" @ ISO-200 in Sunlight with Baader UV-Pass Filter] Bee Vision [f/8 for 1/3" @ ISO-400 in Sunlight with UG-330 (1.5mm) + S8612 (2.0mm)] Link to comment
Andy Perrin Posted January 20, 2016 Share Posted January 20, 2016 Oooh! The Bee Vision one looks sharpest, even more so than the individual visual and UV pictures. Any idea why it is more in-focus? Was it just luck, or is the focal shift more favorable or something? Link to comment
Cadmium Posted January 20, 2016 Share Posted January 20, 2016 Andrea, the Bee Vision shot (Hoya U-330 1.5mm + Schott S8612 2mm) is especially beautiful! Link to comment
Andrea B. Posted January 20, 2016 Author Share Posted January 20, 2016 Andy, shorter UV wavelengths reveal much more surface detail than do Visible wavelengths. Typically, that gives an impression of more sharpness in any UV and Bee Vision photographs over the Visible version of the same scene. I was shooting outdoors in sunlight with no additional artificial illumination, so the UV photo exposure was 1.3" long and is therefore less sharp than the Bee Vision photo.It is surprising that the UV photo is as sharp as it is given that exposure length. :D I refocus after each filter change, so there will be no focal-shift effects. ********** Steve, thank you. I have really enjoyed learning how to shoot the BV combinations. I have the U-330 + S8612 combo and also the UG-5 + S8612. Link to comment
moggafogga Posted January 20, 2016 Share Posted January 20, 2016 Wow, very impressive :)So beautiful, sharp and with lots of details compared to my shots of Gerbera. Regards, Martin Link to comment
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