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Figure!28!shows!the!MTF!curves!for!the!new!RF24-105mm!F4!L!IS!USM!on!the!left!compared!with!those!
of!two!established!EF!zoom!lenses!—!for!the!wide!e nd !of!the ir!resp ectiv e!zo om!ranges.!!Of!special!note !
are!the!following:!
1. 10!Lp/mm!Sagittal!is!slightly!lower!than !that!o f!the!EF 24 -105mm!f/4L!IS!II!USM!lens!e xc e p t!a t!th e !
extreme!!corners!of!the!image!!
!
2. 10!Lp/mm!Meridional!maintains!a!higher!MTF!from!image!center!to!a!height!of!15mm!than!both!
EF!lenses!—!and!it!approximates!the!performance!of!EF24-105mm!f/4L!IS!II!USM!at!the!image!
extremity!
!
3. 30!Lp/mm!Sagittal!behavior!is!slightly!better!!out!to!an!image!height!of!15mm!than!the!EF24-
105mm!f/4L!IS!II!USM! but!is!hig h er !th a n!t h at !o f!th e !E F2 4 - 105mm!f/3.5-5.6!IS!STM!
!
4. At!image!extremity!the!RF24-105mm!F4!L!IS!USM!maintains!a!higher!Sagittal!MTF!than!both!EF!
zooms!
!
5. 30!Lp/mm!Meridional!curve!for!the!RF24-105mm!F4!L!IS!USM!is!higher!f ro m !image!center !to !an !
image!h e ig ht !o f!1 5 m m!than!both !E F!z o o m !lenses!and!is!equivalent!to!EF24-105mm!f/4L!IS!II!
USM!at!image!extremity!—!but!much!better!than!EF24-105mm!f/3.5-5.6!IS!STM!
&
Figure&28! Comparative$MTF$behavior$of$RF24-105mm$F4$L$IS$USM$versus$equivalent$EF$zoom$
lenses$a t$th e $w id e $a n g le$s et tin g$
25!
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