In digital photography, there are plenty of lenses to choose from and one can be mounted on your digital SLR, all of them have their own area of expertise that one would not attain. One of them are the fisheye lens, it is a wide-angle lens that takes in an extraordinarily wide and hemispherical photos.
Principally, the above talked about lens is mainly developed for astronomy and referred to as the whole-sky lenses, then it shortly grew to become well-known basically photography. It is best suited in full body DSLR, just like the Nikon D90. Nikon D90 fisheye lens lets you seize some great landscapes and seascapes because you will be able to emphasize to curve of the Earth.
Its focal lengths depends on the cameras formats. For the popular 35mm format, commonly focal lengths of the fisheye lenses are between 8mm and 10mm for circular lenses and 15-16mm for full frame lenses like the Nikon D90.
Usually extremely-wide angle lenses agonize from some amount of distortion. While this can be conveniently repair for reasonably large angles of views, rectilinear extremely-large angle lenses with angles of view bigger than ninety levels are onerous to design.
Using a Nikon D90 fisheye lens commonly capture an image in a circular curves. But it is true that fisheye lens is not a lens to use all the time, it is certainly not a good idea to keep attached to one’s camera while walking around unless you are a photographer who cover all of your photos in fisheye and when sometimes the right picture does not come along, a fisheye lens can sometimes creates a stunning photos.
Common use of fisheye lens is within the sport of skateboarding; photographers used fisheye lenses to allow them to get the camera as close as possible to their subject and still take up a transparent full view of their subject. It is a one good lens that can be mounted in your digital cameras to amass unique photographs.