The Samyang 8mm/2.8 UMC fisheye lens is available for several camera mounts (Canon M, Fujifilm X, Samsung NX and Sony E). It is designed as a full frame fisheye which covers 180° from corner to corner on these aforementioned mounts with their respective sensor sizes. But since the introduction of the Sony cameras with E-mount and full frame sensor there is an interesting new option for panoramic photographers.
In all the featured examples of this post I just took a picture of a white piece of paper bended around the lens which I converted to a black and white image afterwards.
If you mount the lens in its original state on a Sony ILCE-7 (or ILCE-7r) then you get an image which looks something like this.
Samyang 8mm/2.8 UMC Fisheye on Sony ILCE-7 (original lens hood)
You can clearly see, that the lens hood shades a good part of the image. Which is of course a bad thing if we want to shoot a spherical with this lens.
In the next example I therefore used a side cutter to remove the plastic lens hood on the longer side of the sensor.
Samyang 8mm/2.8 UMC Fisheye on Sony ILCE-7 (lens hood of long side shaved)
And in the final example I removed as much of the lens hood as I could. This is the final resulting image.
Samyang 8mm/2.8 UMC Fisheye on Sony ILCE-7 (lens hood completely shaved)
In this state the lens covers approximately 190° on the long side of the sensor. With three or four images easily covering the full sphere the final equirectangular is 10000 pixels by 5000 pixels in size on a Sony ILCE-7.
You can already find a daylight, blue hour and indoor example from Markus which were all shot with a shaved version of the lens and a Sony ILCE-7.