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11.2& &&&&&&&RF50mm&F1.2&L&USM&
This! is! a! large! diameter! standard! single-focus! lens! employing! the! new! standard! RF! mount.! ! At! its !
maximum! aperture!of!F1.2!the!lens!m aintains!high!sharpness!at!image!center!with!well!controlled!falloff!
of!MTF!toward!the!image!extremities.! !!Th e!lens!is!designed!to! extend!the! creative!photo!expressiveness!
for!profession al!ph ot ographers!and!high-end!amateurs.!
!!! !
Figure&18! The$new$RF50mm$F1.2$L$USM$features$high$overall$o p tical$perform a nce$and$innovative$
operational$functionalities$$$!
The!lens!is!a!totally!new!optical!design,!comprised!of!fifteen!elem ents!in! nine! groups.! !T he! rear!elem ents!
capitalize!on!th e! sh o rt! flang e! b ack ! of! th e! EO S!R!system!—!their!large! size ! con tribu ting!to!the!high ! op tical!
performance.!!The!first!eleven!elements!constitute!the!focusing!optics.!!The!lens!h as!a!m inimu m !focal!
distance!of!40!cm!(15.7!inches)!and!maximum!magnification!is!0.19x.!
!!!!!!!!!!!!!!!!!!!! !
Figure&19! Showing$the$ nine$groups$made$up$ of$a$total$of$fifteen$lens$elements$within$the$RF50mm$
F1.2$L$USM$lens$
19!