(Editor's note: Tim Grey returns with another guest post. This one answers why the blades that form the aperture in a lens makes a difference.) There are many reasons to choose one lens over another, both when making a new purchase and when choosing which lens to use for a particular photo. But have you ever stopped to consider how many blades there are in the aperture assembly of a given lens? You might be surprised at the impact the structure of the lens aperture can have on your photos. Aperture Basics The lens aperture is designed to … [Read more...] about Why Do the Number of Aperture Blades in a Lens Matter?