7Artisans developed a 35mm f/5.6 Aviation lens for E-Mount. Below is a translation of from on their official site and 7Artisan lenses are available on Amazon.
The 35MM F5.6 is designed for tilting photography of drones. The optical path design of the rear large lens is used on the optical structure to maximize the space between the bayonet, the correction of the vignetting on the image, and the edge quality. Analytical map. The original use of the aperture front integrated structure, the focusing structure can be fine-tuned infinity position for different models, and then used three screws to lock horizontally, to avoid high-frequency vibration inside the drone Loose, suitable for full frame.
via 7Artisans