Round Up: F/4 Constant Aperture Zoom Lenses We field a team of optically splendid, (relatively) affordable f/4 zoom lenses. By Peter Kolonia | Published Aug 06, 2013 1:19 AM Galleries This image-stabilized full-framer is 7 ounces lighter than Canon's classic non-stabilized 24-70mm f/2.8L, close-focuses down to nearly 1:1, and saves you seven Benjamins over the f/2.8. SHARE Canon EF 70-200mm f/4L IS USM, $1,349 One of Canon’s longer f/4 full-framers, it’s nearly two pounds (!) and $1,150 (!!) lighter than the 70–200mm f/2.8 IS II grenade- launcher. Our IS testers averaged nearly three stops extra hand-holdability. Nikon 16-35mm f/4G ED VR AF-S, $1,257 A full-frame extrawide, it will double as a 24–52.5mm for Nikon DX body fans. Has effective (close to three stops) Vibration Reduction, whereas the Nikon 17–35mm f/2.8D has none. Nikon 70-200mm f/4G ED VR AF-S, $1,397 Nikon does what Canon does with this full-framer: saves you weight (a pound and a half) and dough (a cool grand!) over its f/2.8 beast. Highly effective VR, too—we got as much as five stops. Panasonic Lumix G Vario 7-14mm f/4, $959 A 14–28mm equivalent, this Micro Four Thirds mount lens weighs in at a wonderfully light 2/3 pound, allowing MFT fans to sneer superciliously at those benighted, backbroken full-frame DSLR nuts. Pentax DA 12-24mm f/4 ED AF, $897 An 18–36mm full-frame equivalent on Pentax’s APS-C bodies, this beauty weighs just under a pound, and produced best-in-class distortion results in our test: virtually none at 24mm— even more beautiful. Pentax DA 17-70mm f/4 AL SDM AF, $597 This standard zoom (25.5–105mm FF equivalent) is actually shorter than Pentax’s smaller-range 16-50mm f/2.8 lens (and 700 bucks cheaper). Can you say no-brainer? Sigma 10-20mm f/3.5 EX DC HSM AF, $650 Hey, if you can get a 1/3-stop more brightness than f/4, why not take it? Especially given the optical excellence and near-silent AF of this APS-C lens for Canon, Nikon, Pentax, Sigma, and Sony bodies. Tokina 12-28mm f/4 PRO DX, $599 Canonites & Nikonians will be tempted by this new APS-C optic, which scales up to 19–45mm (C) or 18–42mm (N) in full-frame terms, and has a nine-curved-blade diaphragm—yippee-yi-o-bokeh! MORE TO READ RELATED Check out these incredible images from the 2021 Audubon Photography Awards These winning images from the 2021 Audubon Photography Awards show birds in all their glory. READ NOW RELATED 10 iconic photographs worthy of your wall right now Bring fine art home with these wall decor... RELATED Stunning photos from the Smithsonian’s 17th annual photo competition revealed Bathing monkeys, squabbling birds, and more.