The following three images illustrate the three fish eye lenses on Sony cameras with a full frame size sensor (for example the Sony ILCE-7). To get these kind of images on a full frame sized sensor you have to shave the lenshood of the Samyang lenses.
The following two images illustrate the two fish eye lenses on Sony cameras with an APS-C size sensor (for example the Sony ILCE-6000 or the Sony ILCE-QX1). To get these kind of images on an APS-C sized sensor you have to shave the lenshood of the Samyang 7.5mm.
This panorama shows the construction site of the historic center of Frankfurt am Main.
The shooting was done with a 6 meter (appx. 20 ft) pole to reach a more elevated viewpoint. The lens was mounted with a custom-made bracket. Stitched from five images taken with a Walimex (Samyang) 7.5mm fish eye lens on a Sony QX1. Four images around and an additional image for the nadir. The zenith was retouched by hand in post-processing.