| Features | Two ED (Extra-low Dispersion) elements and PGM aspherical lenses control chromatic aberrations, while enhancing sharpness and contrast, even at the widest aperture settings Exclusive Nano Crystal Coat further reduces ghosting and flare for even greater image clarity Internal Focus (IF) provides fast and quiet autofocusing without changing the length of the lens, retaining subject-working distance through the focus range |
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