- All mechanical.
- Bright View finder 100% coverage with magnification factor 1.
- NO info on the viewfinder with a nice focusing screen, pref interchangeable.
- MLU with an easy slider or switch. OM-1n's switch is not that comfortable.
- 1s - 1/4000s: Higher sync. But, I am happy with 1/1000s.
- Self timer
- Hot shoe + PC Sync.
- Lens with DOF preview button + Hood + contrast filter/UV filter.
All you need is film + a good incident meter. My personal choice is Gossen Digisix.