INTRODUCTION  The Canon EF 400 f4 DO IS ii was introduced in November 2014.  The lens replaces the original EF 400 DO IS, which was released around 2001. The DO designation stands for diffractive optics, which is a lens technology that helps reduce the overall size [...]

Introduction This is certainly an interesting lens, if not a new one. Introduced sometime in 2002, at the time of writing, still the only professional-grade DO lens that Canon has brought to market. The DO designation stands for diffractive optics. Canon made use of a multi-layered diffractive [...]

INTRODUCTION When Canon announced the replacement of all 4 of their super telephoto lenses a while ago, I remember wondering exactly what sort of real upgrades the new lenses would offer.  It turned out that I was most impressed by the first two lenses that I reviewed, [...]

The Canon EF 800 L super telephoto is as impressive a lens as I have ever used.  First released in 2007/8, it benefits from being designed from the outset to be used with digital camera bodies. The EF 800 L works well when used with a [...]

Canon EF 300 L f/2.8 IS II USM Fixed Telephoto Lens - Field Review Introduction I bought my own Canon EF300 L f/2.8L IS I some four years ago, the predecessor to this lens. From the first frame that I took with that lens, I never looked [...]