1 aspherical, 1 ultra-low dispersion, 1 Blue spectrum Refractive
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Clearly this is a lens for those with deeper pockets, but is also the kind of exceptional lens that can make one’s work that much more special. It is built to last for many years to come, and is a lens that will only get better as Canon delivers higher resolution cameras with greater dynamic range. Perhaps the RF85L should be viewed more as an investment.