Đánh giá nikon lens 24-120 nano năm 2024
(From Nikon lens literature) Two Aspherical lens elements for low distortion. Two Extra-Low Dispersion (ED) glass elements for minimized chromatic aberration. Internal Focus (IF) design for smoother focusing and great body balance. VR operation offers the equivalent of using a shutter speed 3 stops faster at 120mm. Exclusive Silent Wave Motor enables ultra-high-speed autofocusing with exceptional accuracy and powerful super-quiet operation. Rounded diaphragm to make out-of-focus elements appear more natural. First Nikon wide-angle zoom lens with Vibration Reduction (VR) Test Notes The Nikkor 24-120mm f/3.5-5.6 VR is a very popular optic, thanks to its convenient focal length range and its use of Nikon's "VR" (Vibration Reduction) technology. The VR technology lets you hand-hold shots in low light conditions, at shutter speeds as much as three stops slower than you'd be able to otherwise. - The impact of this is hard to overstate for many amateur shooters, a market the 24-120 is clearly targeted at. Unfortunately, there's rarely a free lunch, and the downside of the 24-120's excellent capabilities and relatively affordable price is that it just isn't terribly sharp at anything close to its maximum aperture, and the very best results require stopping it down quite a bit. Its "sweet spot" ranges from f/8 at 24mm, to f/11 at 50-85mm, to f/16 at 120mm. At minimum aperture, images are very soft from 50mm (f/30) through 120mm (f/32). Chromatic aberration is for the most part in the "average" range (about 0.06% of picture height) across the span of focal lengths, lower at smaller apertures from 50-85mm, but more or less constant with respect to aperture at both the wide and tele end. While the maximum CA isn't any higher than many lenses though, the average value is a bit higher than average. - This may indicate that the aberration extends further into the frame than with some other lenses. Exposure uniformity is one bright spot with this lens though, as the light falloff in the corners of the frame is only about 1/4 f-stop at maximum wide angle and aperture, and decreases significantly as the lens is stopped down or the focal length increased. (Anywhere other than wide open at wide angle, maximum falloff is less than 1/10 of a stop.) Geometric distortion is fairly typical, about 0.6% barrel at maximum wide angle, switching to about 0.25% pincushion at 50mm, and then decreasing slightly to 0.2% pincushion at 120mm. So what's the bottom line for the 24-120mm? For the money, it would probably make a great "vacation" lens, where you only want to lug along one lens on a trip, and so want one that can cover a wide range of focal lengths, yet still deliver reasonably good picture quality. Its VR capability likewise makes it well suited to travel situations, where you're less likely to be hauling a tripod along as well. We'd like the lens a lot better if it were a bit sharper at larger apertures, but for a one-lens solution, it's one of the better choices in Nikon's arsenal. Nikon24-120mm f/3.5-5.6G ED-IF VR AF-S NikkorNikon 24-120mm f/3.5-5.6G ED-IF VR AF-S Nikkor User Reviews7.8/10average of 15 review(s) Build Quality8.3/10 Image Quality7.2/10
9 out of 10 pointsand recommended by Ross_Alford (36 reviews) VR allows handheld shooting at low ISO in low light, actually very sharp and contrasty when stopped down 1-2 stops Very few; front section feels wobbly but several samples all do so it must be by design I think the narrative description of the test results for this lens is far too negative about image quality. If you look at the performance over the zoom and aperture range, it is not perfect wide open, but stop down 1-2 stops and it is superb. It is almost universally true, even of extremely good lenses, that really great results do not occur wide open. The criticism of results at f/30 or so is also unfair, at those apertures diffraction is the major factor for any lens, as the MTF testers at photodo.com say, at small apertures almost all lenses are equally bad. Because this lens has VR, you can afford to shoot at the "sweet spot" apertures of about f/8-11 even in low loght. I routinely handhold about 1/8 sec at 24mm, 1/15 to 1/30 at 120. Results are spectacularly sharp and contrasty. When I moved to a d2x I suddenly realized several lenses I had thought were perfectly useable couldn't cope with the high demands it makes on lens quality; this lens was not one of them, it remains the lens most often on the camera. |