Review on Sigma 17-50mm f/2.8 EX DC OS HSM FLD Lens: Large Aperture Standard Zoom for Canon DSLR - International Version (No Warranty) by Jae Pistono

. This lens is an excellent product. Especially if you're just an enthusiast looking for a fast lens and don't want to pay for professional grade glass. F2.8 is cool (nice bokeh). The only star I take is that the autofocus is REALLY loud. I usually shoot video and edit it to add music so it doesn't bother me, but when I need to capture dialogue from a moving subject, my Canon SL2's amazing dual autofocus results in horrible continuous shooting with this lens. clicking sound. Yes I know it's not a video lens, it doesn't look like Canon's new STM lenses (and even louder than the USM), but it's loud. Unfortunately. In addition, it is better not to update and play with photos and videos.