Abstract: A light-sensitive composition comprising of1. an N-nitroso compound having the general formula ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, are each a member selected from the group consisting of a monovalent hydrocarbon radical, a monovalent hydrocarbon radical attached to the nitrogen atom of amine through --SO.sub.2 --, and a group of the formula ##STR2## where X is a divalent hydrocarbon radical, and R.sup.3 is a monovalent hydrocarbon radical, which may be the same as R.sup.1 or different therefrom, which R.sup.1, R.sup.2 and R.sup.3 may have substituent groups, and R.sup.1 and R.sup.2 may together form, directly or by being bonded through an oxygen atom or nitrogen atom, a ring;2. a photopolymerization initiator; and3. a compound having a photopolymerizable ethylenic double bond in its molecule.