Đánh giá sigma 28 70 f2 8 for nikon năm 2024
According lens Sigma Zoom 28-70mm 1: 2.8 for Nikon huge thanks to the store www.fotika.com.uawhere you can find a huge number of different used photographic equipment, including this model. Review Sigma Zoom 28-70mm 1: 2.8 The Sigma Zoom 28-70mm 1: 2.8 is an old 2.5x full-frame zoom lens with a constant f / 2.8 maximum aperture. HistorySigma has the largest family tree of universal high-aperture zoom lenses. It is sometimes very difficult to distinguish one model from another, as well as find information on a particular modification. Below are listed all such lenses in chronological order of their publication, the names are indicated according to the spelling on the lens housing or near the front lens, and the optical design and the number of special elements are indicated:
Separately, you can still identify almost universal:
Designations in the names of the lenses:
Sigma Zoom 28-70mm 1: 2.8 with maximum trunk length (28 mm focal length and focusing on MDF) The Sigma Zoom 28-70mm 1: 2.8 has presumably been in production since early 1992. The build feels good to the touch. The zoom and zoom ring are rubberized. During zooming, you can see how the rear lens drives into the lens, and the insides near the rear lens are covered with black velor, most likely to absorb dust. The bayonet and the thread for the front filter are metal. The zoom ring is too close to the camera mount and not very comfortable to rotate. Sigma Zoom 28-70mm 1: 2.8, rear view The auto focus speed of the Sigma Zoom 28-70mm 1: 2.8 is fast. During focusing, the front lens rotates and extends forward :(. Video review can be viewed at my youtube channel: The focus ring rotates during autofocus and must not be touched. There is a window with a focusing distance in meters and feet. The DOF scale is indicated for the wide-angle range (28 mm, letter 'w') for F / 16 only, and for the tele-range (70 mm, letter 't') for F / 22 only. There are two 'R' marks for infrared operation (Tele and Wide). The minimum focusing distance is 50 cm. The Sigma Zoom 28-70mm 1: 2.8 uses large 72mm filters. The focusing ring rotates only 90 degrees. During a change in focal length, the trunk of the lens travels in waves - it lengthens, then it shortens. It's funny that the maximum trunk length is at 28 mm of focal length, while at 70 mm the trunk only slightly moves forward. The most compact size of the lens has a 60 mm focal length. When you change the focal length, the front lens does not rotate, and the rear lens moves inside the lens. Sigma Zoom 28-70mm 1: 2.8 with a hood The lens hood is not attached to the lens trunk, but to the mounts located near the focusing ring. Thus, with the hood installed, the change in trunk length is imperceptible. And also - this allows you to use a sufficiently high hood and not get vignetting at 28 mm focal length. This opportunity appeared precisely due to the fact that the maximum length of the lens trunk is available at 28 mm focal length. A similar principle of operation of the hood can be found in Canon Zoom Lens EF 24-70mm 1: 2.8 L USM. The hood can be installed in the opposite direction for transportation. In this case, it will completely block access to the focus ring, regardless of the set focal length. Sigma Zoom 28-70mm 1: 2.8 with hood in transport mode The diaphragm consists of nine petals, but when closed, they form a non-circular hole and as a result, in the blur zone, polyhedra can be obtained (example on f / 4) From bright light sources you can achieve the effect of 19 ray star (example on f / 14). Sigma Zoom 28-70mm 1: 2.8, front lens Either by age, or by itself, but the enlightenment of optics in the optical viewfinder gives pronounced yellowness, and during shooting, the image may stretch toward red or yellow. Sigma Zoom 28-70mm 1: 2.8, front lens enlightenment Features for Nikon Cameras. It's important: auto focus with this lens is available only when using him on cameras with built-in motor focusing. Exact list Nikon DSLR cameras with a built-in focus motor, on which this lens will focus automatically: D1, D1h, D1x, D2x, D2xs, D2h, D2hs D3, D3x, D3s, D4, D4s, D5, D6 Df D50, D70, D70s, D80, D90 D7000, D7100, D7200,D7500 D100, D200, D300, D300s,D500 D600, D610, D750, D780 D700, D800,D800E, D810, D810a, D850 Fujifilm FinePix S1 Pro, S2 Pro, S3 ProS3 Pro UVIR, S5 ProIS Pro Kodak DCS PRO 14n, DCS Pro SLR/n Exact list Nikon DSLR cameras without a built-in focus motor, on which this lens will not focus automatically: D40, D40x, D60 D3000, D3100, D3200, D3300, D3400, D3500 D5000, D5100, D5200, D5300, D5500, D5600 all digital mirrorless cameras Nikon ZDX, Nikon ZFX with Nikon FTZ/FTZ II adapter Only auto focus and sound confirmation of focus will not work with these cameras, all other important functions, such as automatic exposure metering and automatic iris control, will work well. You will find a lot of useful information on the types of cameras and lenses Nikon here. There is no focus mode switch on the lens itself; to put the lens in manual focus mode, you must put the camera in manual focus mode using the switch located near the camera mount, which puts the camera itself in manual focus mode. The lens has a manual aperture ring. To be able to control the value aperture from camera or for automatic installation aperture on modern central control valves, you need to turn the control ring to F / 22 and fix it with a special lever, which is located to the right of the marks aperture. If this is not done, then on a number of cameras, the display will display an error - 'fEE' (ring is not installed aperture) Some cameras having diaphragm rheostatallow you to control the aperture using the ring aperturebut only in metering modes exposure 'M' and 'A'. You can read more about this issue in the section on . Ring aperture rotates with clicks, the values F / 2.8, 4, 5.6, 8, 11, 16, 22 are plotted on it, it is impossible to establish an intermediate value between pairs of numbers. For Nikon cameras, the lens is an analog , , the lens. Funny but such an ancient lens already knows how to transmit into the camera. When shooting with your hands, there should not be any special problems, since the big aperture lens allows short excerpts at low values ISO. Sigma Zoom 28-70mm 1: 2.8 Lens Case The lens is very weak at f / 2.8. Sharpness at open apertures is poor due to chromatic and spherical aberrations. If you close the aperture to F / 4, then the image is normalized. Strong vignetting is noticeable at 28mm and f / 2.8. In the backlight, the amount of glare is also not happy. The lens suffers from distortion a little and, in general, does not surprise with anything special. True, still the ability to use F / 2.8 is sometimes much more important than sharpness. F / 2.8 allows you to use short excerpts and protect yourself from movement during handheld shooting. I think it’s better to get a not-so-sharp shot, but no blur due to shake, than just a blurry shot. Sigma Zoom 28-70mm 1: 2.8 can be an inexpensive lens for simple shooting and does not really pretend to be the main lens in the photographer’s backpack. Here link to the archive with the originals - 316 MB, 27 photos in .NEF format (RAW) from the camera Nikon D700 и Nikon D80. When using the lens on Nikon DX cameras EGF will be 42-105mm (wide angle will be lost). Sigma Zoom 28-70mm 1: 2.8 on the Nikon AF N8008s Professional fast wagonChoosing a good high-speed universal lens is one of the most important for a large number of photographers. I pay a lot of attention to this issue, because I prepared this list of all full-frame universal (standard range of focal lengths) fast autofocus lenses: CanonBayonet EF:
Bayonet R:
NikonBayonet F:
Bayonet Z:
Tokina (for different mounts)
Sigma (for different mounts, in chronological order)
Tamron (for different mounts)
SonySony / Minolta A mount:
Sony E-mount:
Pentax (K)
Angénieux
Vivitar
Panasonic
Leica
Samyang
ResultsThe Sigma Zoom 28-70mm 1: 2.8 is old and, in terms of image quality at F / 2.8, a weak lens. Interesting for its fast focusing, constant maximum aperture F / 2.8 and low price. If you are looking for such an inexpensive lens, I advise you to look away Tamron AF 28-75mm 1: 2.8 SP XR Di LD. Material prepared Arkady Shapoval. Training/Consultations | Youtube | Facebook | Instagram | Twitter | Telegram |