Kenko Teleplus Pro 300 AF 2X DG
Teleconverter • Digital era • Discontinued
- Announced:
- · No data
- Production status:
- ● Discontinued
- Country of design:
- · Japan
- Original name:
- · KENKO C-AF DG 2X TELEPLUS PRO 300
- · KENKO N-AF. DG 2X TELEPLUS PRO 300
Specification
| Optical design: | |
Magnification factor: | 2x |
| 35mm full frame | |
| Canon EF | |
| Minolta/Sony A | |
| Nikon F | |
| 7 elements - 4 groups | |
| Physical characteristics: | |
| 185g (Minolta/Sony A) | |
| ⌀68×51mm (Minolta/Sony A) | |
| - | |
| - |
Source of data
- Manufacturer's technical data.
Manufacturer description #1
The Kenko Teleplus PRO 300 DG teleconverters are designed to perform the best when used with longer telephoto lenses. Recommended to be used with lenses longer than 100mm, they will maintain the resolution of the prime lens even at the corners.
Kenko PRO 300 DG AF Teleplus converters have genuine Gate Array IC. It means that the converter's own unique circuitry maintains signal integrity between the camera body and lens. Full AF operation with PRO 300 DG 2.0x is possible when using lenses with maximum aperture of f/2.8 or brighter.
Manufacturer description #2
Kenko Teleplus Pro 300 DG converters are made with precision quality multicoated optical glass supplied by Hoya Corporation, the world's largest manufacturer of optical glass. These glass elements were designed to match the optical quality of the prime lens (even at the edges) and telephoto zoom lenses. The optical design of the elements and light path is wide enough not to cause vignetting. The DG version is optimized for use with digital SLR cameras, as well as film cameras.
The PRO 300 DG family are designed specifically to be used with prime telephoto lenses of 100mm or above, such as the Tokina AT-X 300 AF PRO, 300 mm f/2.8 lens, and work best with telephoto lenses of 200mm to 500mm. The PRO 300 DG can be used with telephoto zoom lenses as well as prime lenses. However, Kenko does not recommend them for zoom lenses that have a range starting under 50 mm.
KENKO PRO 300 AF Teleplus DG converters have genuine Gate Array IC (Integrated Circuit). This means that the converter's own unique circuitry maintains signal integrity between the camera body and lens. These converters are designed to electronically operate the same way as an original manufacturer's converter.
Full AF operation with PRO 300 2.0x is possible when using camera lenses with maximum aperture of f/2.8 or brighter. Please be aware that AF will work properly only if there is enough light and contrast on the subject to activate the camera's AF sensors (manual focusing is required when using lenses with smaller maximum f-stop value than those given above).