Specs
Review
The Sony 12-24mm f/4 G is a lens that provides very good sharpness, excellent color and contrast and a wonderful ultra-wide focal range, and while an ambitious lens such as this also requires some compromises with lens aberrations, the overall image quality is on a very high level for such a lens.
https://admiringlight.com/blog/review-sony-fe-12-24mm-f-4-g/
Review
12mm
Center sharpness remains high through from f/4 to f/16, with f/22 being adversely affected by diffraction. The edges are almost as sharp as the center, with f/5.6-f/11 producing the sharpest results.
24mm
Center sharpness is high through from f/5.6 to f/16, with f/22 being adversely affected by diffraction. The edges are almost as sharp as the center, with f/8-f/11 producing the sharpest results
http://www.photographyblog.com/reviews/sony_fe_12_24mm_f4_g_review/
Samples
https://www.bhphotovideo.com/explora/photography/hands-review/week-sony-fe-12-24mm-f4-g-lens/
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