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light ratio

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light ratio [′līt ‚rā·shō]
(astrophysics)
A number (2.512) that expresses the ratio of a star's light to that of another star that is one magnitude fainter or brighter.
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This permitted changing the light ratio from one to one or to two-to-one.
Wireless Flash with TTL Control by Wells, R.H. / PSA Journal
This relatively light ratio leaves the security with little hope of benefiting from a short-squeeze situation.
Schaeffer's Midday Options Update Features American International ... by Business Wire
Ideal light ratio and individual incident readings with meter at subject was f/22 overhead, f/32 rim and side lights, and f/ 16 main light.
Nature photography and rehabilitation by Rohde, Russell / PSA Journal
 
 
 
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