Kenko DG Auto Extension Tube 12 for the Canon EOS AF Mount.
| Image magnification ratios and exposure factors.-(50mm standard lens) | |||||
| Auto Extention Tube | Distance Reading of Master | Image Magnification Ratio | Field Coverage (cm) | Distance from Lens Front to Subject (cm) | Exposure Factor |
| 12mm | Infinite-0.5m | 0.24-0.35 | 10x15-6.9x10.3 | 21-16 | 1.5-1.8 |
DG Series New DG Series have upgraded "Gated-Array" circuitry to work better with the digital SLR's and some of the the new digital only lenses. They still work the same with film SLR Cameras and lenses as well
