Bokeh and longitudinal chromatic aberration drive me... LoCA!
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Bokeh and longitudinal chromatic aberration drive me... LoCA!

Canon 5D Mark III | 35L | F1.4

But (off-center) sharpness wasn't the only area where the original lens struggled. Note how the bokeh tends to get 'nervous' toward the edges of the frame, which I believe resulted from the same properties of the lens that tended to smear even in-focus details near the edges at wide apertures. We'll be curious to assess if bokeh remains smooth across the entire frame with the new lens. If the MTF charts are any indication of across the frame performance, though, I suspect this won't be an issue in the new design.

Like many fast primes, the original 35L showed green and magenta fringing around subjects behind, and in front of, the focal plane, respectively. You can see this in the cyan/green rings around out-of-focus highlights in the image above.