Manual lens. The camera won’t recognise it
To enable "Release w/o Lens" on the OM System OM-1 (or Olympus OM-D E-M1 series) to shoot with manual or adapted lenses, go to
Menu > Custom Menu (Gear Icon) > D (Shooting Menu) > Release w/o Lens and set it to
On. This allows the shutter to fire when the camera doesn't detect electronic contact with a lens. [
1,
2,
3]
I can't see the menu options you suggest - maybe those are from the OM-1 mkII or the OM-D E-M1 that you refer to - My OM1mkI is on firmware v.1.7 .
Currently these settings are working in both M and A modes:
AF Menu 6:
MF Assist (Magnify - On, Peaking - On, Focus Indicator - On)
Peaking Settings (Color - Yellow, Highlight intensity - High, Image Brightness - On)
Preset MF Distance - 999.9m (I will amend this based on experiences)
MF Clutch - Operative
Focus Ring - anti-clockwise
Reset Lens - On
Testing with 4 different lenses (OM 135mm focal length : OM 28mm f3.5, 50mm f1.8, 135mm f3.5 , and a Vivitar 100-300mm f4.2). These were all bought with my entire savings along with the OM1 in my late teens, so couldn't afford the higher level lenses (which will be obtainable s/h now).
I took thousands of shots with these lenses and a teleconverter, of seascapes (pacific islands especially) & tourist type locations around the world,=, 'industrial' on-board ship, and of F1 & horse trials - using high-speed Ektachrome for the sports and Kodachrome 64 for the more static subjects. Mainly with the OM2 bought in Hong Kong after the OM1 got doused in salt water from a huge wave in the Australian Bight.
I also have a couple of OM zooms which I picked up more recently s/h, but those are quite heavy for the OM-1 body and I have seen adverse comments regarding using zoom lenses with the adapters.