Key features. Performance. Lab results. Verdict. The full-frame compatible Canon EF 24mm f/2.8 IS USM has the same focal length and aperture rating as Canon’s EF-S 24mm f/2.8 STM pancake lens, the latter being designed for APS-C format DSLRs. The full-frame ‘EF’ lens is still reasonably compact and easily manageable at 68x56mm and 280g. Another Canon lens more similarly priced and also marketed to professionals is the Canon EF 24mm f/1.4L II USM Lens. While the Canon is not perfect at f/1.4, it is a very solid performer at the f/2.8 equivalent, besting the Zeiss. Close behind the Canon optically and close to the Zeiss in terms of marketing niche is the Nikon 24mm f/1.4G AF-S Canon has announced the RF 10-20mm F4 L IS STM, a rectilinear ultra-wide zoom lens for RF-mount cameras. Despite the addition of image stabilization, the new lens comes in at half the weight of Canon's previous ultra-wide zoom, the EF 11-24mm F4 L USM. The Canon 20mm ƒ/2.8 USM is a solid lens, coated with a black semi-gloss finish that resists wear and tear. Canon EF 24mm ƒ/2.8 ~$300 Canon EF 20mm f/2.8 USM User Reviews. The Canon EF 11-24mm f/4L USM is a unique lens that combines an incredibly wide field of view with a zooming design and constant aperture. MSRP $2,999.00 $2,304.95 at Amazon The Canon lens produces slight to medium amount (1.5%) of barrel distortion. This is rarely noticeable and lower than for most zoom lenses at 24mm. Vignetting Typical for most lenses used on full format cameras, the EF 24mm f/2.8 USM IS shows a heavy light falloff at large aperture settings. The title of the widest AF-capable rectilinear lens on the market has belonged to Canon for a long time with their EF 11-24mm F/4 L USM. Well, the king has been surpassed with today’s As of review time, you can easily buy 6 of these lenses for the price of just one Canon 14mm f/2.8L II Lens and 5 for the price of one Nikon 14mm f/2.8. Note that, with the focus confirmation chip, the Nikon version of the Samyang 14 is modestly more expensive and that this higher price is factored into these comparisons. Canon calls this the Canon EF 28mm f/1.8 USM. EF: Electronic Focus. All modern Canon lenses focus with a motor in the lens. USM: Ultra-Sonic Motor: The focus motor operates silently. There's no "USM" on the lens, instead it says "Ultrasonic" in gold. Focal Length. 28mm. Canon RF 50mm f1.2L USM review; Canon EF-M 11-22mm review so far; Canon EF-M 22mm f2 review so far; Canon EF 24-105mm STM review so far; Canon EF-S 18-135mm IS USM review-so-far; Canon EF-S 10-18mm IS STM review-so-far; Tamron 70-200mm f2.8 VC G2 review; Canon EF 11-24mm f4L USM review; Canon EF 50mm f1.8 STM review; Canon EF 50mm f1.2L USM review TiVMv.