The Kenko Teleplus HD DGX 1.4X for Canon EOS is a lightweight extension for DSLR equipment, weighing only 111 grams. This Teleplus converter extends the focal length of the combined lens by a factor of 1.4. Compared to its predecessor, the optical performance has been improved, ensuring that the effective values (even with zoom lenses) and the working aperture are recorded in the image's EXIF data.

The Kenko Teleplus HD DGX 1.4x can be used with both manual and autofocus optics. The minimum aperture should be at least f4 to achieve ideal results. The Teleplus is compatible with TTL (through-the-lens metering) and AE (automatic exposure control). When using the Teleplus 1.4x, the lens aperture is reduced by one stop. This loss of light intensity is automatically compensated for by the resulting smaller aperture (e.g., from 2.8 to 4). Photography is possible without making special adjustments. However, depending on the subject and other photographic conditions, it may be necessary to make exposure corrections.