Andrea B. Posted May 26, 2013 Share Posted May 26, 2013 Blum, A.G. (2013) Opuntia engelmannii Salm-Dyck ex Engelmann (Cactaceae) Engelmann's Pricklypear. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...ns-pricklypear/ Desert Botanical Garden, Phoenix, Arizona, USA25 April 2013Wildflower in botanical garden Synonyms:Cactus AppleComment: Reference:1. Epple, A.O. (1995) Engelmann's, page 165. A Field Guide to the Plants of Arizona. Falcon Guides, Globe Pequot Press, Guilford, CT. Equipment:[Nikon D600-broadband + Nikon 105mm f/4.5 UV-Nikkor][Nikon Coolpix A] Visible Light [f/7.1 for 1/1000" @ ISO 200 with Coolpix A] Visible Light [f/11 for 1/1000" @ ISO 400 in Sunlight with Baader UVIR-Block Filter] Ultraviolet Light [f/11 for 1/4" @ ISO 400 with SB-14 UV-modified Flash and Baader UV-Pass Filter] Link to comment
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