Teckton ⅝" x 5" Natural Grade Walnut Premium Unfinished Engineered Flooring. Teckton ⅝” x 5″ Natural Walnut Technical Details Camera: Canon EOS REBEL T5i Taken: November 3, 2016 Focal length: 18mm Aperture: f/45 Exposure: 1/2 second ISO: 100