Richard CanonNews / Sunday, November 12, 2017 / Categories: Lens Catalog Canon EF 75-300mm f/4-5.6 III USM Specifications for the Canon EF 75-300mm f/4-5.6 III USM Lens Category and Release Details Lens Mount TypeEF Lens CategoryTelephoto Zooms Launch DateApril, 1999 Initial Price$479.00 Lens Characteristics Diameter71mm Length122mm Weight480g Filter Thread58mm Rear Filter InstalledFalse WeathersealingFalse Focal Length75mm - 300mm Number of Elements / Groups13/9 Maxiumum Aperture4.00 Minumum Aperture32.00 Minumum Focal Distance1.50m Number of Diaphragm Blades7 Purchase Links for the Canon EF 75-300mm f/4-5.6 III USM Canon USA Canon USA Refurbished Amazon B&H PhotoVideo Adorama Aperture Range: f/4-45 Ultrasonic Autofocus Motor (USM) Smooth Zoom Control Minimum Focus Distance: 4.9' 58mm Filter Thread Diameter Previous Article Canon EF 300mm f/4L IS USM Next Article Canon EF 70-200mm f/4L USM Print 1838 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.