[sassan]

As an owner of Peleng, I must admit this baby is just for anyone with interest in fish eye. A must to have. It is unbelievability cheap for quality, really fun to picture with adequate sharpness. The only defect this lens has is poor coating so if you point it toward a light source you get a good amount of flair(A lot of time, difficult to avoid this as almost what you see in your visual field and beyond are included in the field of view of this lens).
It is has tank quality (I can confirm this after one drop of lens, falling with glass side on the rock and not even showing a sign of scratch...).
No mater what, fish eye photography is one of the most interesting part of photography and now the post processing de-fishing or softwares that permit you to join two (One image in either opposite direction from the same point of view), 180 degree field of view image (8mm lens on a full frame) to create a virtual real image that you can turn the point of view in every direction side to side or up and down make this aspect of photography even more interesting.