1. Voltage: First Test. The first hour I was convinced to return the thing immediately. I could
through the viewfinder detect whether the image was not sharp or not. This is still so but ...
with good estimate of the distance between the subject and the camera can be corrected well with the focus ring soon.
Lo and behold. The images are sharp.
Game No 2: I'm not coming with my Crop 1.6 (7D) Although the full 180 ° image detail but the image area is still huge.
And who is not just for National Geographics photographed can neglect distortions, vignettes and Chromatic Aberration confidently. Because the price / performance ratio. No one can deny this. Such a lens is not just a day to use. Therefore, an expensive L-variant would have been no alternative for me. The lens is fun but it can only be described as a fun lens I do not entirely fair. Since there are much worse variants.
3. Chocolate: It's like always difficult to write reviews about lenses because they are almost always subjective. Depending on the application and information arising very different evaluation criteria. But when old enemy of adverse party, I must admit. I'm surprised. These fish look is enough for me.
The only downer for me. The light intensity could be a bit better. Therefore, for the poor visibility, if properly focused, and the obligatory, slight image defects, as already mentioned in point 2, there in my review one star deduction.
Conclusion: 4 stars for a fringe of a fisheye lens L-drenched amateur photographers