Other Specifications | - Distance Scale, Wide Angle Zoom for EF-S Mount Bodies, Fast Quiet Auto Focus, Super Spectra Coating, Circular Aperture, Passes Distance Information to E-TTL II, Magnification - Extension Tube EF12 II: 0.45 - 0.23, Magnification - Extension Tube EF25 II: 1.71 - 0.51,
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