Olympus OM-1 - Page 23

B-2
Viewfield:
Exposure
Indicator:
Magnification:
Reflex Mirror:
Type:
Mirror-up:
Mirror Cut-Out:
Reflection:
Exposure Meter:
Type:
Method of
Measurement:
Sensing Cell:
Measuring
Range:
Film Type
Indication:
Insufficient
Light
Warning:
ASA Ratings:
Power Source:
97% both vertically and horizontally.
Visible in the viewfield is the exposure
measurement indication.
0.92X at infinity with standard 50mm lens.
Quick return type.
The mirror can be looked up by 90° rotation
of the mirrorlock-up lever.
No mirror Cut-Out in the viewfinder regardless
of the lens used, from 8mm fisheye tnrough 800mm
ultra-long telephoto (in case of full open aperture).
Highly reflective special coating is applied on the
reflecting surface.
Through-the-lens light measuring meter.
Open-aperture light measuring method, for average
light measurement.
Zero-method system
Two CdS (cadmium sulphide) type cells.
EV1.2 - EV16.9 with MS5512 at ASA100
EV2 - EV1.7 with MS5014 at ASA100
EV2.35 - EV17.35 with MS5018 at ASA100
Film sensitivity indicator dial with ASA ratings
with the locking device.
When switched in, the needle jumps down
extremely beyond the lower limit of the
range indicator, if light is insufficient.
ASA 25 - 1600
Mercury battery, 1.3V, JTIS H-D type.
(e.g. National H-D, Toshiba H-D, Mallory RM-
625R, GENo. 625, Eveready E625N, etc.)