Sekonic AUTO LUMI L-158 User manual

Instructions for use
Part Designations
Sensor (1)
Pointer (2)
Guide mark (3)
Movie scale (4)
Shutter speed scale (5)
f/number scale (6)
DIN scale (7)
ASA scale (8)
ASA set knob (9)
EV scale (10)
Dial ring (11)
Specifications
Measurement system:
Reflected light system
Measurement range:
EV7 to 17 (ASA 100)
Angle of incoming light:
65°
Scales:* ASA (DIN) . . .6 (9) to 12000 (42)
* f/number . . . 1 to 64
* Shutter speed (T) . . . 8 to 1/2000 sec.
* EV . . . -2 to 19
Dimensions : 81 x 52 x 24.5mm
Weight : 50g
The Auto-Lumi is a very handy carry-around
exposure meter. It allows the exposure to be
measured very easily thanks to its
pointer-tracking system which is based on
the guide mark.
Film speed setting
Set the film speed setting which you intend to use.
How to set the film speed
For, the correct setting on the ASA scale (8), rotate
the ASA set knob (9) and align the white mark on
the black dial with the red scale unit in the ASA
window.
Reading out the exposure
When the sensor (1) is pointed in the direction of
the subject, the pointer (2) deflects in accordance
with the brightness of the subject. To read out the
exposure, rotate the dial ring (11) and set so that
the pointer (2) is aligned with the center of the
guide mark. The correct exposure will be the
combination of the shutter speed scale (5) unit on
the dial and the f/numher scale (6) unit.
In the illustrated example,
f/5.6 will be the correct
exposure at 1/125 sec. and
f/8 at 1/60 sec.

Dial scales
The numbers /2, /4 and /8, etc. on the shutter speed
scale (5) signify 1/2, 1/4, 1/8 sec. etc., and the
numbers 1, 2 and 4, etc., signify 1, 2, 4 sec., etc.
The numbers 1.6M, 3.2M, etc. on the ASA scale (8)
signify 1600, 3200, etc.
Movie scale (4)
Measuring the exposure for movie cameras is
performed in exactly the same way as that for ordinary
still cameras except that the number of frames (8, 16,
32, etc.) is taken into consideration. Read out the value
on the f/number scale (6) which best agrees with the
number of frames of the movie camera and then
transfer this setting to the camera. With a movie
camera shutter open angle of 180°, the standard
number of frames for play films is 24, and this is
indicated by the black line. The standard number of
frames with single 8 and super 8 movie cameras is 18
and this is indicated by the black dot.
EV scale
If your camera has an exposure value type of shutter,
determine the exposure using the exposure value
scale (EV scales). If you are, for instance, using an
ASA100 film, set the EV scale, to '10' with an EV10
value. If the f/number of the camera is set to 5.6 at this
value, the shutter speed will automatically go to 1/30
sec. and 1 /8 sec. with an f/11 setting.
Interim scale units
The interim units on the dial scales are as follows:
Interim values of the ASA scale (8) [DIN scale (7)]