The EF 17-35mm f/2.8L USM provides silent,high speed autofocus with optical performance equal or superior to similiar fixed focal lengths lenses. This remarkable short focal length was achieved by using two replicated aspherical elements that correct optical aberrations including distortion and flare while maintaining high image quality 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. Is there anyone working and playing with the new Canon EF 24mm f/2.8 IS USM Wideangle prime lens, on a crop body like the 7D??? For what i have read it is a stunning lens. I have a 40stm pancake and a 70-200 f/4 and i feel this will be lens i am missing. 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 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. Spanning focal lengths between 27.2mm and 88mm in 35mm format, it provides a constant f/2.8 maximum aperture throughout the zoom range. Optical stabilisation is built-in and the ultrasonic motor ensures fast and silent autofocus with full-time manual override. Side view of the Canon EF-S 17-55mm f/2.8 IS USM lens without the supplied end caps. Released back in 1988 the Canon EF 24mm f/2.8 is one of the oldest Canon EF lenses but it is still part of the current line-up. On APS-C DSLRs such as the EOS 350D/Digital RebelXT (as usual used for testing) the moderate ultra wide-angle lens is transformed into a moderate wide-angle equivalent to about 38mm. The Canon RF 16mm F2.8 STM Lens vs. Canon RF 15-35mm F2.8 L IS USM Lens comparison shows the prime lens to be dramatically smaller and lighter than the zoom. Correspondingly, the RF 16 uses smaller filters (43mm vs. 82mm) and has a higher maximum magnification (0.26x vs. 0.21x). The RF 15-35 has image stabilization, an AF/MF switch, separate .

canon ef 24mm f 2.8 is usm lens review