When looking for a fisheye lens for Sony E mount, consider features such as focal length, maximum aperture, build quality, autofocus capability, and whether the lens offers full-frame or APS-C compatibility.

Yes, you can use a full-frame fisheye lens on an APS-C Sony E mount camera. However, the effective focal length will be multiplied by the crop factor of the APS-C sensor, typically around x1.5.

Fisheye lenses offer a unique ultra-wide-angle perspective that can capture dramatic and creative images. They are great for landscapes, architecture, astrophotography, and artistic shots due to their distinctive distortion and wide field of view.

Yes, several third-party manufacturers such as Sigma, Rokinon (Samyang), and Laowa produce high-quality fisheye lenses compatible with Sony E mount cameras. These lenses often provide excellent performance at competitive prices.

Distortion from a fisheye lens can be corrected using photo editing software like Adobe Lightroom or Photoshop. These programs offer lens correction tools that can help straighten lines and reduce the characteristic curvature of fisheye images.