Re-housing,
PL mount upgrade
Focus, iris cotrol gear upgrade.
80 mm front adapter for universal lens hood systems.
https://sites.google.com/site/olexservicelenses/home/lens-pl-upgrade/lomo-22-mm-f2-0t2-5-35-oks-3-22-1
https://youtu.be/FH9ZujEIAp4
Available re-housing, PL upgrade
18 mm OKS-5-18-1
22 mm OKS-3-22-1
28 mm OKS-4-28-1
28 mm OKS-7-28-1
35 mm OKS-11-35-1
50 mm OKS-1-50-1
50 mm OKS-1-50-6
75 mm OKS-6-75-1
Other lenses, to ask.