Lens Summary
Brand: Kenko
Also Known As: Kenko 1.4x Teleconverter
Lens Type: Teleconverter
Format: Full Frame / FX
Focus: Autofocus
Release Date: N/A
MSRP Price: $259
Made in: Japan
Production Status: In Production
Lens Description: With the Kenko Teleplus PRO 300 DGX 1.4x AF Teleconverter full autofocus (AF) functioning is possible with lenses having a maximum aperture of f/4 or brighter. Having 1.4x magnification, the Teleplus PRO 300 is constructed of 5 multi-coated elements in 4 groups and allows a depth of field 1/1.4 of the prime lens used and retains the prime\'s minimum focusing distance.
Kenko Teleplus Pro 300 AF 1.4x Specifications
| Lens Specifications | |
|---|---|
| Lens Type | Teleconverter |
| Focal Length | 1.4x |
| Mount Type | Canon EF, Nikon F |
| Format | Full Frame / FX |
| Compatible Format(s) | 35mm Film / Full-Frame Digital Sensor DSLR (APS-C Sensor) |
| Optical Information | |
| Lens Elements | 5 |
| Lens Groups | 4 |
| Physical Characteristics | |
| Weather / Dust Sealing | Yes |
| Mount Material | Metal |
| Dimensions | 27 x 24mm |
| Weight | 132g |
| Other Information | |
| Available in Colors | Black |
unfortunately this simple review said nothing about whether the focus speed was affected
Will AF work with a Canon 7D and Canon 400mm F5.6? I read the canon
teleconverters still AF on this gear, but you need to put electrical
tape on some of the pins…