Announced tonight, Canon adds the 16-35mm f/4L IS to it's prestigious L series line of lenses. With an Optical Image Stabilizer system, the 16-35mm f/4 IS adds up to 4 stops of correction for great performance, even in low light. While this announcement is exciting for many of us, it also has many of us scratching our heads in confusion.
Perhaps what has me scratching my head the most is the f/4 side of this lens. While shooting on the ultra wide angle side of things means you're not getting much bokeh anyway, f/4 feels slow when you consider that Canon announced the 17-35mm f/2.8L in 1996, followed by the original 16-35mm f/2.8L back in 2001, and then released it's version two predecessor back in 2007. While IS is nice, it's not exactly a requirement when shooting at a focal length like 16mm. But alas, I'm just a writer...
Focal Length & Maximum Aperture: 16–35mm 1:4.0
Lens Construction: 16 elements in 12 groups
Diagonal Angle of View: 108°10' – 63°
Focus Adjustment: Inner focus system
Closest Focusing Distance: 0.92 ft. / 0.28m
Filter Size: 77mm diameter
Max Diameter x Length, Weight: 3.3 x 4.4 in., 21.7 oz. / 82.6 x 112.8mm, 615g