Richard CanonNews / Sunday, November 12, 2017 / Categories: Lens Catalog Canon EF 28mm f/2.8 IS USM Specifications for the Canon EF 28mm f/2.8 IS USM Lens Category and Release Details Lens Mount TypeEF Lens CategoryWideangle Primes Launch DateFebruary, 2012 Initial Price$549.00 Lens Characteristics Diameter68mm Length52mm Weight260g Filter Thread58mm Rear Filter InstalledFalse WeathersealingFalse Focal Length28mm Number of Elements / Groups9/7 Maxiumum Aperture2.80 Minumum Aperture22.00 Minumum Focal Distance0.23m Number of Diaphragm Blades7 Purchase Links for the Canon EF 28mm f/2.8 IS USM Canon USA Canon USA Refurbished Amazon B&H PhotoVideo Adorama Aperture Range: f/2.8-22 Aspherical Lens Elements Optical Image Stabilization Ultrasonic Autofocus Motor Manual Focus Override Rear Focusing System 7-Blade Circular Diaphragm Minimum Focusing Distance: 9" 58mm Filter Thread Diameter Previous Article Canon EF 500mm f/4L IS II USM Next Article Canon EF 24mm f/2.8 IS USM Print 1355 Richard CanonNewsRichard CanonNews Richard has been using Canon cameras since the 1990s, with his first being the now legendary EOS-3. Since then, Richard has continued to use Canon cameras and now focuses mostly on infrared photography. Richard is the founder and editor of CanonNews since 2017, and has worked as a writer on CanonRumors and other websites in the past. Other posts by Richard CanonNews Contact author Facebook page Please login or register to post comments.