TTArtisan 11mm F2.8 Full Fame Fisheye Wide Angle

The TTAArtisan 11mm F2.8 full-frame diagonal fisheye lens is an ultra-wide-angle manual focus lens designed specifically for DSLR cameras. This version natively uses the Nikon F-mount, allowing direct mounting on Nikon DSLR cameras such as the D850 and D750. As a diagonal fisheye, it achieves full-frame coverage, rather than the circular fisheye effect with a black ring. [1, 2, 3, 4, 5, 6]

Core Specifications and Technical Parameters

Parameter Items [1, 3, 7, 8, 9, 10] Technical Specifications Focal Length and Sensor Frame: 11mm fixed focal length, supports full-frame sensors. Maximum angle of view diagonal 180°, providing strong fisheye distortion and spatial perspective. Aperture Range: F2.8 – F16, with a stepless aperture design (suitable for smooth video transitions). Lens Construction: 12 elements in 10 groups (exclusive design for SLR mount, optimizing rear flange distance imaging). Aperture Blades: 10 aperture blades. Focusing Range: 0.25 meters – infinity at the rear (manual focus, M mode). Material and Weight: All-metal body with integrated lotus petal lens hood, weighing approximately 439g~600g. Electronic Contacts: Purely mechanical lens, no electronic contacts (cannot record EXIF ​​data in the camera). Aperture data (requires "lens-free shutter release")

Key Selling Points and Advantages

180° Ultra-Wide Field of View: Ideal for capturing magnificent landscapes, large indoor spaces, creative portraits, and panoramic VR stitching.

Excellent Coma Control: The large aperture combined with good edge distortion correction makes it a popular choice for low-cost astrophotography and Milky Way photography.

Metal Construction and Compact Design: The lens body is made of anodized aluminum, with a finely damped focus ring and a solid overall feel, far exceeding that of plastic lenses in the same price range. [1, 6, 7, 8, 11]

Usage Notes

Filter Incompatibility: Due to the convex spherical shape of the front element of the fisheye lens, this lens does not support direct mounting of circular front filters.

Fully Manual Operation: Focusing and aperture adjustments must be performed manually via the physical ring. On Nikon SLRs, it is recommended to enable full-screen Live View with focus peaking or magnification to ensure accurate focus.

Camera Settings: If you cannot press the shutter button upon first use, you need to enter the Nikon camera menu, find "Non-CPU Lens Data," and manually enter "11mm" and "F2.8" to allow the camera to meter correctly.

Be careful not to accidentally shoot your fingers: Because the 180° diagonal angle of view is so wide, please be careful not to let your fingers and toes stick out too far when holding the camera and lens, otherwise they can easily end up at the edge of the frame. [1, 10, 11, 12, 13]

Which Nikon camera model are you currently using? If you plan to switch to a mirrorless camera, or want to learn about its image quality and post-processing distortion correction methods, please let me know.