(06-02-2022, 10:24 AM)Rover Wrote: The 15/1.4 has 8.6% barrel distortion in RAW, and therefore is close to being named "the first f/1.4 Fisheye lens in history".
At least Lenstip says so (they've reviewed this lens posthaste). I get the feeling the 11/1.8 is not going to be pretty in this regard either.
8.6% is indeed a lot, but what we can observe is that its IQ is impressive, even in the corners.
I'm no optical engineer, but it appears that taking advantage of software correction allows to either:
- build smaller lenses with the same IQ than fully optically corrected ones
- build similar-sized lenses with better IQ than fully optically corrected ones
Software correction probably allows for more freedom in the design and in the end, what matters is the final result and I'm perfectly fine with this as long as any software can access the lens distortion data to correct for it.