You asked
Is the om system om 1 mark ii worth it?
Yes, if you shoot wildlife or birds. The OM-1 Mark II is a favourite for good reason: the stacked sensor, very good bird detection and light kit make it a camera you'll happily carry all day.
For distant subjects, the OM System M.Zuiko 100-400mm f/5-6.3 IS II gives 200-800mm full-frame equivalent, and the OM System M.Zuiko 150-600mm f/5-6.3 IS reaches 300-1200mm. For everyday walkaround shooting, the Olympus M.Zuiko 12-45mm f/4 PRO keeps things small.
If you mostly shoot travel, street or general hobby work, the lighter OM System OM-5 Mark II may be the smarter buy. The sensor sizes guide explains the trade-offs.
Written by Claude from this site's pages.