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The Canon 70-200mm f/2.8 USM has the usual distortion seen in telephoto zooms: It's got some barrel distortion at 70mm and some pincushion distortion at 200mm. The Canon 70-200mm f/2.8 L IS II has 25% less distortion, not that big a deal. With rounded blades, there are no sunstars, except at the very smallest apertures where there may rarely be just a tiny one. This was Canon's top professional zoom from 1995 thorough 2001, when the first 70-200mm f/2.8 IS was introduced. This 70-200/2.8 (non-IS) remains in production because if you're shooting action or shooting from a tripod, IS doesn't do anything.

Take complete creative control of your images with PIXMA and imagePROGRAF PRO professional photo printers. The most popular and well-known configuration of a 70-200mm lens is a 70-200mm f/2.8. These are the best choice, with their fast, constant f/2.8 aperture that gives you plenty of latitude to work in low light and also allows for the creation of shallow depth of field. Even at f/2.8, it's scalpel-sharp from edge to edge. Remember that only a thin plane, not everything, is in perfect focus at f/2.8. Picture quality for the Sigma holds up through f/11, drops slightly at f/16 (4,100 lines), and more noticeably declines at the minimum f/22 setting (2,800 lines). Lenses always lose resolution at very small apertures because light particles scatter as they pass through a narrow opening, so pictures look softer. But you might want to use f/16-22 for sunstars, as the lens is capable of crisp 22-point starbursts around small, bright highlights at these settings. Sony a7R IV, 160mm, f/8, 1/250-second, ISO 200 (Credit: Jim Fisher) prevents the lens from focussing closer than 5 meters (15 feet). Use this only if you're having a problem with the lens trying to focus too closely, for instance, if interfering objects are in the way.

A sample images taken with the Sigma 70-200mm f/2.8 DG DN OS | Sports (Image credit: Aya Iwasaki | Sigma)

It includes a removable solid-alloy tripod collar, but this lens is so small and light that it's not needed. Smallest, lightest and closest-focussing 70-200/2.8 ever. (OK, the newer RF 70-200mm f/4 focuses closer and the huge Thai-made Nikon Z 70-200/2.8 can focus closer at 70mm, but not as close at 200mm where we need it.) There's also the issue of sealing. While the RF 70-200mm possesses the same top-tier weather sealing as Canon's other L-series glass, the fact that it telescopes does make us wonder if water and particulates will start to find their way through the seals –especially if you're zooming in and out constantly while shooting in wet or dusty environments. IS does nothing if you're shooting moving kids and sports. It does everything if you're shooting still subjects in dim light without a tripod. I prefer the latter, so I love IS and would want one of the IS lenses.

70-200mm F2.8 Sports: In the Lab

Botts' Dots, 21 November 2016. Nikon D810, Nikon 70-200mm f/2.8 FL at 78mm at f/22 hand-held at 1/30 at Auto ISO 100. bigger or camera-original file to explore on your computer. Row of Desert Palms at Dawn, 21 November 2016. Nikon D810, Nikon 70-200mm f/2.8 FL at 200mm at f/2.8 at 1/2,000 at Auto ISO 100. bigger or full-resolution file to explore on your computer.