I may post pictures later if I get a chance, but the lens shoots at 22mm with an image similar to the back side of a spoon meant to be corrected to 24mm. It’s hard to see when there are no people in the photo, but it really is a fisheye lens from 24-30 without corrections. With the corrections the photos are a bit flat and seem a bit 2 dimensional. Reminds me of the 18mm end of the 10-18mm. Lightroom and Photoshop have profile fixes that auto correct the image through crop and distortion correction that gets it to 24 and you can apply your own corrections using a slider.
The lens corrections are done very well, but the image is not the same as it would be if you were to take a few steps back and shoot at 35 instead. It’s not simply a photo with the corners blocked. It’s as if the photo was on a dome pushing out in the center. That’s undesirable if you are taking pictures of people.
In reality this lens is three lenses. Fisheye with corrections makes it an acceptable 24-30, excellent zoom 31-200, good telephoto zoom 201-240. Again, the 24-30 end can be corrected and it’s nice to have when you need it, but ideally you stay in the 31-200 range. If they had made this a 31-200 range lens it could be an L series. That said, I have gotten spoiled by the range and I wouldn’t trade this for a 24-105 any time soon.