What are Some of the Most Popular Zoom Lenses?.What is the Difference between a Telephoto Lens and Zoom Lens?.My time spent in PP has reduced dramatically and a lot of images just require a small amount tweaking. The focal point of close up images just seems to pop out at you. Colours are so accurately reproduced and the clarity of the test photographs that I've taken thus far is incredible. When it comes to colour rendition and clarity this lens is truly astonishing. Don't take any notice of the minimum focussing distance, as with a bit of readjustment of the focus point and in the right light I've managed to get great quality images at half the recommended distance! It's about a 90 degree turn from wide to tele and the zoom action is very smooth.Īutofocus is very quick and accurate (especially on single point af) though as yet I haven't tested it in very low light. The zoom ring turns counter clockwise (not a problem for me as I have Sigma anyway) which some people may find strange but you soon get used to it. Don't let this put you off as it feels top quality and very well nailed together. Though it has a metal lens mount the body is made of plastic. Some people may find it a tad too heavy but it balances perfectly on my K50 (it weighs more than my Sigma 18-250mm tele lens!).īuild quality seems fantastic for a lens of this price. Taking it out of the padded, zipped case the weight tells you that you have a lot of good quality glass in this lens. Straight from the box, this lens oozes quality. Factor in the £520 premium you have to pay for the Pentax (ok, you do get weather resistance, 2 extra aperture blades and an extra 1mm at the wide end!) and, quite frankly, it was a no brainer. Whilst the Pentax came across as a 'Marmite' lens (people either loved it or hated it!) the reviews for the Sigma were very consistent ie it's a very good lens. Having decided that I needed a good quality, fast portrait/landscape lens to compliment my telephoto lenses, I spent countless hours reading reviews (both user and professional) on this lens and the Pentax equivalent, the DA* 16-50mm. So you can rest assured that it’s something we know extensively and care deeply about. Since 1961, and with the recent introduction of Sigma Global Vision, we have worked toward one single, simple goal: To hold ourselves to the highest standard of design & manufacturing of imaging products. Compact and light weight, it’s a necessary addition to your camera bag.ĭimensions (Diameter x Length): 83.5x91.8 mm/3.3x3.6 in. If you need to be ready for any photographic opportunity, even low light, then this Sigma lens is perfect. With a minimum focusing distance of 11 inches throughout the entire zoom range and a magnification ratio of 1:5. This lens boasts superior peripheral brightness and provides sharp, high contrast images even at the maximum apertures. The Super Multi-Layer coating reduces flare and ghosting. Sigma’s own FLD glass elements, which have performance equal to fluorite along with two glass mold and one hybrid aspherical lens, provide excellent correction for all types of aberrations. The OS, Sigma’s anti shake feature offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. Sigma’s 17-50mm F2.8 EX DC OS HSM large-aperture standard zoom lens covers a focal length from 17mm wide angle and offers a large aperture of F2.8 throughout the entire zoom range, making it ideal for many types of photography especially portraiture and landscapes. 17-50mm F2.8 EX DC (OS)* HSM The Camera Bag Staple
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