. The Canadian field-naturalist. The Canadian Field-Naturalist Vol. 99. Figure 3. Above: Chamaepericlymenum canadense; photo taken in sunlight without filters using Kodak Tri-X film. Below: similar photo of same plants taken through quartz lens and a ...
Wratten 34A UV-IR NEW! Kodak Filter 3x3" 75mm Gel UVIR 18a substitute Fast Ship! | eBay
Graph showing the small peak of IR light with the Kodak Wratten 18A... | Download Scientific Diagram