EF-M2 builts with optics to increase light input by one F stop and reduce focal length by x0.71. GH5 / GH4 / GH3 / GH2 / GH1 / GF9 / GF8 / GF7 / GF6 / GF5 / GF4 / GF3 / GF2 / GF1/. Focal Lenth Multiplier:0.71x.
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