Nikon 10.5mm f/2.8G DX Fisheye lens

This ultra-wide-angle, frame-filling fisheye, designed exclusively for use with Nikon's DX-format, delivers incredible images with a 180-degree angle of view, optical and close-range focusing performance are both optimized for Nikon DX Format digital SLR cameras.

This G-type Nikkor lens is designed with no apertureAPERTUREAperture, shutter speed and ISO form what is known as the exposure triangle in photography. Aperture refers to an opening inside the lens, similar to the iris of your eye, that changes in diameter to control the amount of light that enters a camera. Aperture is expressed in f-stops: the lower the number, the larger the aperture, e.g. f/1.4 is larger than f/8. A larger (or wider) aperture allows more light to pass through the lens to the sensor (film) as a picture is taken, particularly useful in low-light conditions. A larger aperture also produces a shallower depth-of-field, and thus more background blur. rings, and offers easier ooperation because the aperture does not need to be set to the minimum.

The Nikon 10.5mm fisheye lens delivers high-performance focus at extremely close range; a minimum focus distance of 5.5" (14 cm) -- only 1.2" (3 cm) from the lens front.