use the fisheye for panoramas and occasionally also use the fisheye effect creatively in normal photos. Important to know: the lens is purely manual. No auto focus and no aperture control. And unfortunately no data transfer either. In practice, however, this is not so bad. In almost all cases I set the focus to infinity and stop down to F8 - F11. Everything is sharp from about 1m. If you want to focus more closely, the missing automatic aperture must be taken into account. The focus peaking of the Z7II no longer works properly when stopped down. You should therefore focus with the aperture wide open and only then adjust the aperture. So nothing for snapshots. The image quality is good, but should be sharpened a bit in the image processing. I photograph exclusively in RAW format and develop with DXO-Photolab. The camera-lens combo is not yet available here, so automatic corrections are not possible (also because of the lack of data transmission). In the manual process, however, a good - considering the low price even very good - image quality is achieved. The following is to complain about: - The aperture has no detents. As a result, it is easily misaligned and an exact repetition is basically not possible. - The lack of automatic shutter control is annoying for fast freehand shots. - The lens does not transmit EXIF data. If you want to know which lens you used for a picture, you have to enter it manually. - The focal length is cheated. It is more like 15mm. Conclusion: great prize for panorama photographers and for use without time pressure, but not suitable for quick snapshots.