Jan Chelminski
Senior Member
The latest, from the only review site that matters: 
https://www.lenstip.com/554.1-Lens_review-Olympus_M.Zuiko_Digital_ED_17_mm_f_1.2_PRO_review.html
From the summary:
"After a slight misfire with the PRO 1.2/25 model which price, compared to its possibilities, was definitely too high, the continuation of PRO f/1.2 lenses series can be called completely successful. Both models announced in 2017, the M. Zuiko PRO 1.2/17 and the 1.2/45, proved to be optically excellent and both were able to break resolution records. Perhaps they aren’t completely free of any faults and you can’t call them cheap either but the number of their assets and their performance are truly impressive. As a result, the Micro 4/3 system finally got fast, fixed focal length lenses that are able to profit from the advantages connected to the size of the detector they are designed for."
Mine has really been excellent in HR mode!
Jan
https://www.lenstip.com/554.1-Lens_review-Olympus_M.Zuiko_Digital_ED_17_mm_f_1.2_PRO_review.html
From the summary:
"After a slight misfire with the PRO 1.2/25 model which price, compared to its possibilities, was definitely too high, the continuation of PRO f/1.2 lenses series can be called completely successful. Both models announced in 2017, the M. Zuiko PRO 1.2/17 and the 1.2/45, proved to be optically excellent and both were able to break resolution records. Perhaps they aren’t completely free of any faults and you can’t call them cheap either but the number of their assets and their performance are truly impressive. As a result, the Micro 4/3 system finally got fast, fixed focal length lenses that are able to profit from the advantages connected to the size of the detector they are designed for."
Mine has really been excellent in HR mode!
Jan
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