Wideangle Fisheye Prime lenses for Canon 20D
The Canon EOS 20D has the Canon EF/EF-S mount & has a APS-C sensor. At this time, we have details of 7 Wideangle Fisheye Prime lenses which will suit the 20D.
The 20D has a crop factor of 1.6 so you should multiply the lens focal length with 1.6 to find it's full frame equivalent. You can just click the 
image to visualize how the lens fits the 20D.
We have additionally launched an Advanced Lens Search so you can find your perfect lens.
ModelVisualizeFocal LengthApertureStabilizedWeight
Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye5mmf/2.8 470g
Sigma 10mm F2.8 EX DC HSM Diagonal Fisheye10mmf/2.8 475g
Pentax 17 Pre-Orders Outperform Expectations by a Landslide
Sigma 15mm F2.8 EX DG Diagonal Fisheye15mmf/2.8 370g
Canon EF 15mm f2.8 Fisheye15mmf/2.8 330g
Samyang 8mm F3.5 Aspherical IF MC Fisheye8mmf/3.5 443g
Sigma 8mm F3.5 EX DG Circular Fisheye8mmf/3.5 400g
Photography Glossary
Rokinon 8mm f3.5 Aspherical Fisheye8mmf/3.5 443g