fisheye lens photography

introduction

fisheye lenses are special lenses which are designed to give a 180deg field of view and extreme barrel distortion is a characteristic of these lenses
there are 2 main image types:
- diagonal fisheye lenses - these images fill the full rectangular frame of your image
- circular fisheye lenses - these lenses give a circular image thus the area of your frame outside of this circle will appear as black
fisheye lenses are very much a niche lens which is primarily used for creative photography
they are particularly useful for creating visually stimulating images, artistic or humourous imagery