Longitudinal chromatic aberration drives me... LoCA!
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Longitudinal chromatic aberration drives me... LoCA!

Canon 5D Mark III | 24L | F1.4

Oh, and the 35L wasn't the only one with this issue: it's bigger brother, the 24mm F1.4L II lens shows a good deal of green and magenta fringing, or longitudinal chromatic aberration. In the 24L shot above, it's apparent as cyan/green fringes around the out-of-focus tree trunks. This fringing is much harder to remove in post-processing than lateral chromatic aberration, which is removed with a simple tick-box in ACR, with only a significant impact on sharpness for very poorly corrected lenses. So any technology that mitigates longitudinal chromatic aberration is quite welcome. Thankfully, Canon's got something up their sleeve here...