Specialized Canon Lens Abbreviations - as you may have guessed, Softfocus lenses have optical formula that is meant to deliver softer results on purpose. Such lenses used to be popular decades ago among film photographers for portrait photography as they hid skin imperfections and created a “dreamy”, glowing effect. Suffice to say such lenses are no longer popular today it is easy to achieve soft focus effect using post-processing if one should wish so. There is only one Canon EF lens with Softfocus feature, and it is the EF 135mm f/2.8 with Softfocus. It is possible to turn off the Softfocus by setting appropriate ring on the lens to the value of 0 (off), in which case the lens acts like a normal 135mm f/2.8 would.