Lente Sigma Para Nikon 15-30mm Para Nikon
LENTE SIGMA PARA NIKON EMPACADO 15-30MM 3.5 4.5 , solo para nikon D200 D300 ETC
Sigma AF 15-30mm f/3.5-4.5 EX DG
A really wide angle zoom targeted at digital users.
It doesn't look substantial until you mount it on your camera. This lens is every bit as big as the Nikkor 17-35mm AF-S. The butterfly lens hood is built in, and does not remove.
Angle of View
71-110 degrees (35mm); xx-xx degrees (D1)
Close Focus
11.8 inches (30cm)
Weight
21.7 ounces (615g)
The Basics
When Sigma quietly introduced this wide angle lens in Japan, the grapevine quickly brought word of it long before it showed up in US stores. The 1.5x angle of view multiplier built into the Nikon bodies has digital SLR users craving for wide angle support, and almost every D1 photographer I know has both the Nikon 14mm f/2.8 and the 17-35mm f/2.8 AF-S. Yet they still feel constrained at the wide end. Thus, a zoom that filled the gap at the wide end was widely welcomed.
Sigma has been making high quality, unusual optics for some time. One of my earliest non-Nikon purchases was the 14mm f/3.5 (now replaced in Sigma's lineup by an almost identical lens that has a larger maximum aperture of f/2.8). And I used the 17-35mm Sigma for a brief time before passing it on to my mother. I knew I'd be looking at the 15-30mm the minute I heard about it.
This lens has a maximum f/3.5 aperture at 15mm, f/4.5 at 30mm. The minimum aperture is f/22 at 15mm and almost f/32 at 30mm. Focusing reaches as close as 11.8 inches (0.3m). Depth of field markings are provided for f/5.6, f/8, f/11, and f/16. The design has 17 elements in 13 groups, at least one of which is aspherical.
The front element does not move during focus changes, though this doesn't do you any good, since it sticks out like the bottom end of a plastic cola bottle and doesn't accept screw-in filters. A built-in "flower hood" attempts to block off extraneous light, but don't count on it--the front element curvature is so extreme that the middle of the lens is extremely prone to catching extraneous light.
Finally, a wide angle zoom for the D1. This is the Vietnam Memorial taken at 15mm with the D1x. I used hyperfocal distance to keep everything from the Bud beer can in the lower left corner to the Washington Monument in the distance in focus. Sharpness is good, corner to corner, and light falloff is nearly nonexistent on a D1 (but visible in the corners of 35mm slides).
Some Sigma dealers advertise the lens as taking 82mm filters. This is misleading. The lens cap consists of two pieces, a ring and a cap to the ring. The front of the ring has 82mm threads, and if you're using a digital SLR and aren't zoomed out to 15mm, you can leave the ring on the lens and screw a filter into it. But vignetting occurs even on the D1 at the widest focal lengths, and at virtually all focal lengths on a 35mm body if you put a filter on the front. (There is also a small "slot" at the rear that can be used to slip i
Precio:
8,500 pesos
Nombre: Luis Fdo
Ubicación: Guadalajara, Jalisco
Celular: 3338216754
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