Canon EF 24-70mm f/2.8L II USM

For about a decade the only argument in a working photographer's bag was this against Nikon's 24-70mm f/2.8G. Same focal range, same f/2.8, same job description: weddings, events, photojournalism, anything where you cannot stop to swap primes. The Nikon held its corners a hair better through the middle of its zoom range. The Canon hit back with center sharpness wide open that embarrassed the lens it replaced, and it did it while dropping the front-element zoom and the trombone barrel that everybody hated on the original 24-70 f/2.8L. The Canon-versus-Nikon sharpness fight was genuinely contested, but many reviewers rated the Mark II at least as sharp as its rival, and often sharper.

The 2012 redesign earned that reputation. Canon threw out the old optical formula and built something with the resolution to keep up with the 5D Mark III sensors that landed the same year. Wide open at f/2.8 it is already crisp across most of the frame, which a fast standard zoom is not supposed to be. Stop to f/4 or f/5.6 and the corners snap fully into line. A stack of aspherical, Super UD, and UD elements plus Canon's fluorine and Super Spectra coatings keep flare and ghosting under control when you swing it toward a backlit ceremony exit, though shoot directly into a hard sun and you will still catch the occasional veiling haze.

The bokeh is an honest compromise. At 24mm wide it renders cleanly, and at 70mm f/2.8 you get pleasant subject separation for a half-length portrait, but this is a nine-blade zoom and it does not melt backgrounds the way an 85mm f/1.4 does. People do not reach for this lens for buttery rendering. They reach for it because it nails focus fast with ring USM, holds up to rain and dust on the weather sealing, and resolves enough detail that your files have real headroom before you ever touch a sharpening slider. That is why a second shooter will leave it on one body for an entire event.

The weakness everyone meets eventually is the weight and the wallet. It is a dense lens, and a long day on a gripped body makes its mass known. The 82mm filter thread also means your nice 77mm circular polarizers and NDs do not fit, so budget for new glass if you do landscape or video work that needs a screw-on ND. If you are stacking a 6-stop ND for a daylight motion-blur frame, dial that exact stop count into Zone Light Meter so your metered exposure already accounts for the filter before you ever look at the back of the camera.

Today it sits in a strange spot. Canon's RF mount has moved on, and the RF 24-70mm f/2.8L IS adds stabilization the EF version never had. But the EF II is everywhere on the used market now, cheap relative to what it cost new, and it adapts to RF and Sony bodies without losing autofocus speed. For a lot of working shooters that makes it the smartest standard zoom you can buy that is not a current flagship. It built its standing the slow way, by being the lens that simply did not miss the shot.