Here the images taken from the same spot, and focused on the same spot.
Ha Ha...see your shadow...
but seriously thanks for the comparison shot. Looks like the Rokinon isn't as wide as it claims. I'd expect the look to be closer to what the Canon lens is doing. As wide as the Rokinon isn't, I'd probably stick with the 24mm of my 24-70 and wait to afford one of the canon wide angle zooms instead of getting the 14mm. I did find some images from the 8mm. The quality was OK, but I don't think I'd pay $300 for it. I guess I'll keep saving, but I still may get 800mm f8 mirror. Those photos didn't impress either, but the little kid in me calls out for it.
The lenses were set for Hyperfocal distance, however, the lens markings on the Samyang 14mm do not reflect reality, or even close.
A fisheye actually appears to be wider, this is not the fault of the Samyang, its the case with all fisheye versus rectilinear lenses.