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Sekonic TWINMATE L-208 Operating Instructions page 2

Light meter

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Please note the following to assure safe use of the
product.
&_Warning:
This is a warning mark indicating that death or
serious injury of the user could potentially result
if it becomes impossible to use this product prop­
erly.
&.
Warning:
• Be sure to store the unit and batteries in a safe
• The rupturing of the battery could be the cause
6. Light receiving angle {for reflected light)
The angle of coverage is 33. (approx 73 mm) corresponds to approx
70% of angle for 50 mm standard lens of 35 mm SLR camera (approx
Make measurements using the guideline displayed in scale plate
46. ).
@as a guide.
•Measurement values will be different if you measure a subject that is not uniform with a meter
having a different angle of coverage.
7. Measurement
1) In either the incident light or reflected light, when measurement but­
ton@ is pressed, the guide needle will oscillate and, when the button
is released, it will retain its position for about 15 seconds; rotate dial
ring® during that time and align match needle® with the guide
needle.
• Please press and hold the measurement button for over one second due to the feature
of guide needle retaining.
• If you press the measurement button while the guide needle is on hold, a new measure­
ment value
be displayed.
will
2) Read the combination when the shutter speed scale@ coincides with
the aperture scale@, select a combination that is the most suitable
for the subject and set the camera accordingly.
3) Reading the scales
The numbers mean 1/8000, 1/4000, 1/2000 ... 1/2 seconds
1.4
2
2.8
4
5.6
8
F I
I I I I I I I I I I I I I I I I I
ttttttttt
1.7 2.4 3.4 4.8 6.7 9.5
8. Incident light measurements
In this mode, measurements are taken by
directing the lumisphere CD (light sensor)
directly at the camera's lens from the
subject's position.(Fig. 6)
Since only the light (illumination) striking the
subject is measured, the reflection factor of
the subject is not effected and the value dis­
played on the exposure meter is the stan-
dard exposure value.
• This is best for photographing people, flowers and
similar objects.
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Be sure to store the unit in a safe place out of
reach of infants and children in order to avoid
asphyxiation caused by the strap wrapping
around the neck.
place out of reach of infants and children to
avoid the danger of having them swallow the
battery. Immediately contact a physician if the
battery is swallowed.
of fire, injury or contamination of the surround­
ings; do not by any means dispose of the bat­
tery in fire, short or dismantle it or subject it to
heat.
second units
r•
4
2
1
2
I
I
I
_
5 previous shutter values
11
16
22
32
I
interim values
13
19
27
Fig. 5
Incident light measurements
Fig. 6
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Specifications
Model:
Light-receiving method:
Light-receiving:
Light receiving element:
Measurement range :
(ISO100)
Display:
Calibration constants:
Battery:
Operating temperature range: 0
Storage temperature range:
Dimensions:
Weight:
Standard accessories:
• The spec,ficat,ons described ,n th,s ,nstruct,on manual and the external appearance may be
modified for improvement without prior notice.
9. Reflected light measurements
In this mode, measurements are taken by
directing the light receiving element (uncov­
ered) at the subject from the position of the
camera; the proper value is determined by
measuring the light reflected (brightness)
from the subject.(Fig. 7)
Since the measurement is effected by both
the incident light and the reflection factor of
the subject, compensation of exposure is
necessary if the reflection factor of the sub­
ject is extremely high or low.
· This is best for photographing scenery, and other light
emitting objects.
1 O. Shoe mounting
The accessory shoe is mounted using shoe mounting plate@) . The
mounting location of the shoe mounting plate is variable and therefore
mount it correctly for the camera that you are using.
15 30
4
8
I
I
I
I
In case a shoe mounting plate is not fixed to your camera, please put
an 0-ring ® in the groove of shoe mounting plate.
Ambient light type analog exposure meter
Incident light and reflected light
Incident light: lumisphere (flat plate type)
Reflected light: lens (light receiving angle of 33
Silicon photo diode
Incident light: EV3-17 (F2.0 1/2-F22 1/250)
Reflected light: EV3-17 (F2.0 1/2-F22 1/250)
Film speed: 12 - 12500 (1/2 step)
Aperture: F1 .4 - 32 (1/2 step)
Shutter speed: 30 sec - 1/8000 sec. (1 step)
Including 1/5, 1/10, 1/25, 1/50, 1/100, 1/200,
1/400, 1/800
EV value: 3 - 17 (1/2 step)
Incident light: C = 340
Reflected light: K = 12.5
one 3V coin-type lithium battery, model CR2032
°
°
C - 40
C
°
-20 "C - 60
C
45 W
65 H
24 D mm
X
X
40g
strap, carrying case,
shoe mounting plate (w/screw, O-ring)
Fig. 8
Groove
Fig. 9
.com
sales@GlobalTestSupply.com
°
)
Reflected l i ght measurements
Fig. 7

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