Modern camera lenses work very hard to fight imperfections, adding elements to correct chromatic aberration, spherical aberration, and a whole host of other issues. Ironically, at the same time, software programs are embracing classically inspired presets and adding in things like digital flare. If there’s a happy medium to this old school-new school tug of war, it’s the Canon RF 100mm Macro. This lens, formally titled the Canon RF 100mm f2.8 L Macro IS USM, uses a Spherical Aberration Control Ring. Using this ring, photographers can add some slight edge softness, or add softness across the frame as if using a mist filter.
