a technique in which a series of test pictures are taken at different exposure levels in order to obtain the optimum exposure
bracketing in American English
(ˈbrækɪtɪŋ)
noun
1.
a series of brackets
2.
framework for supporting a cove, cornice, plaster ceiling ornament, etc.
Word origin
[1815–25; bracket + -ing1]This word is first recorded in the period 1815–25. Other words that entered Englishat around the same time include: aesthetic, coupon, pullout, trolley, welterweight-ing is a suffix of nouns formed from verbs, expressing the action of the verb or itsresult, product, material, etc. (the art of building; a new building; cotton wadding). It is also used to form nouns from words other than verbs (offing; shirting). Verbal nouns ending in -ing are often used attributively (the printing trade) and in forming compounds (drinking song). In some compounds (sewing machine), the first element might reasonably be regarded as the participial adjective, -ing, the compound thus meaning “a machine that sews,” but it is commonly taken as a verbalnoun, the compound being explained as “a machine for sewing”