Digital Camera and Fisheye Lens
A normal 35 mm camera lens covers an area with 40 degrees HFOV (horizontal field of degree) and 27 degrees VFOV (vertical field of degree). It needs many pictures to make a 360x180 panorama and is very inconvenient either in shooting pictures or in stitching. While with over 180 degree view of angle, the fisheye lens can meet our demands. There are three types of fisheye images shot with different equipment combination.<
1. Full Circular Fisheye:
Fisheye Converter FC-E9
See equipment combination to get full circular fisheye images.
Nikon FC-E9, more athttp://nikonimaging.com/global/products/accessory/converter/fc-e9/index.htm
Focal length of the camera's lens reduced to x0.2
Provides approx. 183 degree (COOLPIX 5700) / 190 degree (COOLPIX 5400) view angle
6 elements in 4 groups
Dimensions (approx.): 101 x 73mm (4.0 x 2.9 in.)
Weight (approx.): 580g (20.5 oz.)
2. Drum fisheye image:
Sigma 8mm f4 Ex circular fisheye lens
See equipment combination to get drum fisheye images.
Sigma 8mm f4 ex circular fisheye lens
Focal length: 8mm
Provides approx. 180 degree view angle
10 elements in 6 groups
Dimensions (approx.): 73.5 x 61.8 mm
Weight (approx.): 400g
3. Full frame fisheye images
AF DX Fisheye-Nikkor 10.5mm f/2.8G ED
See equipment combination to get full frame fisheye images.
AF DX Fisheye-Nikkor 10.5mm f/2.8G ED, more athttp://nikonimaging.com/global/products/lens/af/dx/af_dx_fisheye105mmf_28g_ed/index.htm
Focuses down to 0.14m/0.46 ft.
Full-frame fisheye images with a picture angle of 180 degree (diagonal)
10 elements in 7 groups
Filter attachment size: Rear-attachment type 27mm