Mount. RF. EF. ...
Maximum aperture. f/1.8. f/1.8. ...
Minimum focusing distance. 30cm. 35cm. ...
Lens construction. 6 elements in 5 groups. 6 elements in 5 groups. ...
Special low dispersion glass. PMo Aspherical element. - ...
Special coating. Super Spectra Coating. Super Spectra Coating. ...
Water/dust-resistance. Not supported. Not supported. ...
Aperture blades.
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