Canon EF 2.0x II Teleconverter

The new EF 2x II extender replaces the previous (and highly regarded) EF 2x extender. New on the EF 2x II is added weather-resistance to the front and rear mount surfaces to match the level provided by the EOS-1v and the new IS super-telephoto lenses. Optically redesigned for better performance the EF 2x II extender also features new internal anti-reflection construction that improves contrast even when shooting in heavy backlit conditions

NOTE: When used with the EOS 5/A2/A2e camera, exposure compensation must be set to - 0.5 EV with the 1.4x II or - 1.0 EV with the 2.0x II. Autofocus will work only if the effective aperture is within the range of the camera (currently f/5.6 with most EOS cameras but f/8.0 with EOS 3 & 1V).

• Compatible with same EF lenses as previous 1.4x and 2x tele-extenders
• Workwith EF7O-200rnmf/2.8L, 70.200mmf/4L, and 100-400mm f/43.5.6L IS zoom lenses
• Works with all fixed-focal length EF telephotos, 135mm and over (except the 135mm ff2.8 SF [ens)
• Superior optical performance, particularly with entirely new EF 2x II tele-extender
• Enhanced dust- and moisture-resistant construction, including gaskets at extender release knob
• Same extra three electronic contacts on extender's lens mount, to convert aperture and adjust AF speed
• Completely compatible with every EQS camera body
• Includes new soft case, and same front and rear caps as previous extenders

• Extender Construction: 7 elements in 5 groups (entirely new optical design)
• Lens Coating: Super Spectra multi-coating
• Depth-of-field: Approximately 0.5x that of the master lens
• Dimensions(Diameter x Length): 2.8 x 2.3 in./ 71.8 x 57.9mm
• Weight: 9.3 oz./265g
• Front Cap: Extender Cap E II (same as previous EF tele-extenders)
• Rear Cap: Lens Dust Cap E (standard EF rear lens cap)
• Lens Case: Soft Case LP811