Review on 📷 7artisans 7.5mm F2.8 II APS-C Manual Fisheye Lens for Sony E-Mount Cameras: NEX-5N, NEX-7, NEX-3N, NEX-5T, a3000, a5000, a6000, a3500, a5100, a6300, a6500 by Janelle Simmons

I think fisheye is usually pretty useless, but this is the trick I love. As with most fisheye lenses, there's some distortion and vignetting blur around the edges, but it's not as bad as pricier models. Much of this can be corrected manually in Camera Raw or Lightroom, but there are no presets and no Exif data yet. At f2.8 it's fast enough to take some astrophotos. I've used this on my A7r3 in crop mode and on my a6000. In general I am satisfied with the purchase. I bought mine on sale for €129. It's small, light and very well built. Not required but worth exploring.