Film: Shooting film is a great way to learn the aperture triangle, and makes you take time when taking shots. The OM-1 is a classy way to shoot film
Fully Manual: Shooting fully manual is important, and the OM-1 has the shutter control on the lens mount, and the OM lenses on lens. You don’t need to move the camera away from your face to shoot. The built in light meter is a godsend, and is easily readable via the viewfinder.
Zuiko OM Glass: The zuiko OM prime lenses are well constructed, beautiful lenses, that produce top-not results.
The smaller size: Compared to most other 35mm SLRs from this time period, the OM-1 is small, and easy to navigate. It will easily fit in any bag and is no hassle when using a wrist strap
The aesthetics: The OM-1 is a beautiful looking camera. The no thrills controls are clear to read, and the shutter dial being on the front of the camera allows for a pretty minimalistic top panel.
The feel: This camera just feels right in the hands. A decent weight, but without the heft of a larger SLR such as a Yashica FR-1, the winder feels smooth, and the shutter button is just wide enough for your index finger. The sound of the shutter/ mirror is the nicest sounding I have heard. It just sounds ‘right’.