- Retains all metering and AF functions with most CANON EF lenses
- High level water and dust resistance — suitable for use in heavy rain
- O-ring seals protect mounts and release lever
- Exposure compensation is often required with cameras other than the EOS-1 Series.
Two Extension tubes, in the same 12mm and 25mm lengths as previously available, have been redesigned to accommodate the EF-S mount lenses and its extended rear elements. They’re perfectly compatible with all previous EF and TS-E lenses, and will work with any EOS film or Digital SLR. Exposure compensation is often required with cameras other than the EOS-1 Series.