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The table gives the EV Light reading range for various
lenses, showing the inter-relationship
between aperture,
shutter speed and EV (exposure values). For instance,
when an tl1.4 lens at ASA/ISO 100 is used, the reading
range spanning the points that the vertical lines (EV) and
the horizontal lines (shutter speed) intersect with the
diagonal lines extending from the f values of "1.4" to "16"
(representing the minimum aperture of the Zeiss Planar T*
t|1.4 50 mm), denotes the reading range from EV-1 to 19.
* The EV denotes the value of exposure through com-
bination of the shutter speed and the lens aper-ture that
yield the same exposure effect on a film when the photo
graphing conditions (film speed rating and prevailing
illumination) remain the same. For example, when
using EV 13 f rom the chart on the following page as
a guide, it can be seen that the same exposure
effect is attained using the combinations of
and shutter speeds f rom 16 to 112000
sec. denotes the range over which
the camera correctly meters the
light in the AUTO mode.
r That part of the operating
range which is shown in
color denotes the light
reading range when
using an 1r11.4
lens at
ASA/ISO
1 00.
56
7 I
9 t 0 i l t 2 t 3 t 4 t 5 t 6 l 7 t 8 t 9
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