LENS-DB.COM

Abbreviations

Specification

Source of data

• Manufacturer's technical data.

Typical characteristics of fisheye lenses

• Extreme angle of view (at least 180° diagonally);
• Circular types (the image circle of the lens is inscribed in the image frame) or diagonal types (cover the entire image frame);
• Usually of equidistant projection type, with the distance from the picture center to any given point always proportional to the angle from the optical axis to that point;
• Huge barrel distortion;
• Short closest focusing distance (0.20 - 0.30m with 35mm full-frame prime lenses);
• Very large depth of field, eliminating the need for autofocus or precise manual focusing;
• Due to the extreme angle of view and convex front element, front filters cannot be used;
• Often equipped with a filter turret with swivel-mounted filters;
• Often come with a small, built-in petal-shaped lens hood (*).

(*) Some APS-C models have a detachable lens hood, which allows such lenses to be used on 35mm full-frame cameras as circular fisheyes.

From the editor

An optically very simple, fast circular fisheye for APS-C mirrorless cameras, with only 6 elements in 5 groups, which makes it unfavorably different from the models produced by competitors. On the other hand, it’s funny that with such an optical design, the lens is not at all lighter or more compact than competitors’ models. As is customary with (ultra) wide-angle Chinese lenses, the lens is optimized for close-up shooting: the focus throw is very short, and almost the entire focusing distance scale is occupied by marks from the closest distance of 0.2m to 1m. However, if you set the aperture to F/8 and the focusing distance to 1m, then most likely all objects from 0.50m to infinity will be in focus, and all that remains is to press the shutter release button at the right moment.

Lenses with similar focal length