Find helpful customer reviews and review ratings for Canon EF-S 24mm f/2.8 STM Lens for Canon Digital SLR Cameras with 52mm Filter Kit (UV, CPL, FLD) (12 Items) at Amazon.com. Read honest and unbiased product reviews from our users. The Canon EF-S 24mm f/2.8 is not a perfect lens, but it's a strong performer given its $150 price point. While it doesn't truly excel in any one of the four key areas, it's consistent Aperture Range: f/2.8 to f/22. One Aspherical Element. Super Spectra Coating. STM Stepping AF Motor. Rounded 7-Blade Diaphragm. Portable ‘pancake’ design. At just 22.8 mm deep, and weighing just 125g, the EF-S 24mm f/2.8 STM is a highly portable lens that lets you take your EOS anywhere. Its diminutive design makes it discreet too – ideal EF-s 24mm f/2.8 STM first experience. Jul 28, 2015. 1. About a week ago I was asking about the EF 20mm f/2.8 USM that I was considering purchasing. I didn’t seem to get a lot of first-hand experience feedback though what I heard was pretty mixed. Someone suggested that the lens was really decent if you know how to work with it. On the full-frame EOS-5D, the little 28mmm F/2.8 shows its weak points a bit more, but it still does an excellent job, particularly in terms of sharpness corner to corner. The corners are slightly EF-S 24mm f/2.8 STM (stepping autofocus motor) compatible with Canon EOS APS-C format digital SLR cameras only; 35mm equivalent focal length: 38mm; lightweight, low-profile lens is truly versatile; ultra-quiet autofocus stepping motor supports the Canon EOS Movie Servo AF function for responsive yet silent video shooting I'm just surprised that they can build a small pancake for crop sensors, I had read this was impossible because of the flange distance. With light weight and size, this may replace the Sigma 18-35 f/1.8 as my favorite lens. From canonrumors: Canon EF-S 24mm f/2.8 STM Pancake Specifications Google Translated · focal length conversion 38.4 mm Thanks! The advantage of the 24 / 2.8 STM over the 18-55 / 3.5-5.6 STM IS is that it's a stop faster, smaller, and lighter (the resolution and vignetting differences between them are trivial). The advantage of the zoom over the prime (aside from the obvious fact that it goes from 18-55mm rather than being locked in at 24mm) is that it has IS. Z1huSpy.