Sigma 70-300mm F/4-5.6 DG OS SLD Super Multi-Layer Coated Telephoto Lens for Nikon AF Mount Digital SLR Cameras

High ratio zoom lens housed in a compact construction and incorporating Sigma's original OS (Optical Stabilizer) function. This telephoto zoom lens incorporates Sigma's original OS (Optical Stabilizer) function and is housed in a compact construction. TheOS function offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. The SLD (Special Low Dispersion) glass element provides excellent correction for all types of aberrations. High image quality is assured throughout the entire zoom range. The Super Multi-Layer Coating reduces flare and ghosting and provides high contrast images throughout the focal range. This lens has a minimum focusing distance of 150cm (59.1") throughout the entire zoom range and a maximum magnification ratio of 1:3.9, making it ideal for close-up photography SIGMA's own unique OS (Optical Stabilizer) technology This lens is equipped with Sigma's own unique OS (Optical Stabilizer) function. This system offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. It makes telephoto shooting easy for many types of photography such as sport and nature. For Sony and Pentax mount, the built-in OS function of this lens can be used even if the camera body is equipped with an anti-shake function. As compensation for camera shake is visible in the view finder, the photographer can easily check for accurate focus and ensure there is no subjec

Brand: Sigma Model: 70-300mm OS Nikon AF Mount Dimensions: 5.00" h x 3.00" w x 3.00" l, 1.34 pounds Lens Construction - 16 Elements in 11 Groups Angle of View - 34.3 degrees - 8.2 degrees Number of Diaphragm Blades - 9 Blades (rounded diaphragm) Minimum Aperture - F22 Minimum Focusing Distance - 150cm / 59.1 in

Client more useful in 42 of 43 people found this review helpful. Sigma 70-300 OS with Ken Barlow, I only had 2 days to play with this goal, but so far I am impressed with its performance. I bought this primarily for outdoor use, such as the Nikon 70-200 f2.8 lens is a VR for indoor shooting. I just do not want the mammoth lens on my camera while walking, etc., especially after the opening speed is not necessary in a good light. This seems to do well. Focus is very fast - a little fighter in low-light telephoto lens, but it is quite common for most of the lenses of this type. Picture quality is very good so far. Some very small margin on some of the shots (not a problem with JPEG from my D90, because it automatically eliminates most of CA). I shot some RAW pictures outdoors when I have the chance to see if it's something to worry about, but so far seems to be acceptable. The focus is extremely accurate - dead-on in each picture was taken (no front focus issues that some Sigma lenses) OS is also very impressive. I would say very close to the best lenses from Nikon's VR II. I took a pair of 1 / 4 sec. Shot handheld using only your elbows braced against my ribs, at full telephoto, and shots were quite sharp. You can see in the picture starts when the shutter flow, to ensure that the stabilizer is working. The lens is mounted close to the camera and have a good, solid metal mount like better Nikon lenses. Perfect. I love the size and weight compared to similar Nikon's (this is slightly more compact). The only drawback is that the lens is internal focus with Nikon (which probably determines the compact). This means that the hood must be round (not a petal hood, which I prefer), since the end of the lens rotates as it focuses. It also extends about 7 / 8 of an inch closer to the discussion, which makes the overall length of 300 mm long enough (about 8 inches without the cap, about 10 with the cap) None of this really matters much to me. One thing I liked about it compared to the Nikon 70-300 VR is that the opening starts at f4, f4.5 is not, so it's a bit 'faster than the Nikon. The depth of field is amazing to me. Longer focal lengths tend to amplify the effect very close range, and this is very evident with this. The best way to evaluate this goal would be to break the specific attributes, and then give a rating (1-10) on this attribute, so here goes: the quality of the images (up to): 9 (all impressed so far adopted - Focus color accuracy, sharpness, etc. pretty good): Focus 9-speed (low light of the matter only): 8 (can be a bit 'better) focusing noise: 7 (not as quiet as to focus Nikon AF - even my huge 70 -200 f2.8 8 VR is much quieter) Set: 10 The quality of finish: 7 (surface does not look right or seeking durable as Nikon, but not ugly) OIS: 95 Size / Weight: 9 Ease of Use / Features: 9 I update with more information after using this lens. I can not give the lens 5 stars, but I think it is far from achieving it. I think most people will agree that this goal is worth the money spent and do what you want to do, and do well. Updated: February 2010 - have taken some more shots with this lens. All-in-all still very happy with it. All say he is - a little more than first indicated. RAW shows a little more than JPEG, but it is very easy to remove most of that in Lightroom. Some images are slightly soft. When compared to Nikon 18-105 kit, initially thought they were quite similar, but are a little smoother when seen up close. It is much smoother than my 70-200 f2.8 8, although that will open shots - and Sigma is far behind at any dimmed to f4 or higher on the Nikon, but I would expect nothing less of a lens that more than 5 times as expensive. Exterior shots are very respectable from.