TTArtisan 11mm F/2.8 ED Fisheye M
Fisheye lens • Digital era
- Announced:
- · December 2019
- Production status:
- ● In production
- Country of design:
- · PRC (People's Republic of China)
- Original name:
- · TTArtisan 11mm F2.8 ED Fisheye
- Class:
- · Fast full-frame diagonal fisheye lens
Abbreviations
| ED | The lens incorporates low dispersion elements. |
| FISHEYE | An ultra-wide angle lens with strong uncorrected barrel distortion and extreme angle of view. |
Specification
| Optical design: | |
| 35mm full frame | |
| 11mm | |
| F/2.8 | |
| 11 elements in 7 groups | |
| 1 ED, 4 HRI | |
| Diagonal (full-frame) fisheye | |
| Leica M | |
| 180° | |
| Diaphragm mechanism: | |
Diaphragm type: | Manual |
Aperture control: | Aperture ring |
| 7 (seven) | |
| Focusing: | |
Coupled to the rangefinder: | - |
| 0.17m | |
| <No data> | |
Focusing modes: | Manual focus only |
Manual focus control: | Focusing ring |
| Physical characteristics: | |
| 439g | |
| ⌀67×73mm | |
| - | |
| - | |
| Accessories: | |
| Removable front filters are not accepted | |
| Built-in petal-shaped |
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.
From the editor
The lens is not coupled to the rangefinder mechanism for focusing and will require the use of an auxiliary viewfinder or live view for accurate composition.
Lenses with similar focal length
| ■Leica M mount (1) · APS-C | |||||||||
| Rockstar 10mm F/8 ED Fisheye M • Body cap lens | -- | 5 - 4 | 0.30m | ⌀49 | 2023 ● | ||||