Polymerisable composition, which comprises (a) 0.001 to 5 wt % acyl tin compound(s) of the general Formula as a photoinitiator, (b) 10 to 99.999 wt % radically polymerisable binder, (c) 0 to 85 wt % filler and (d) 0 to 70 wt % additive(s), in each case relative to the total mass of the composition, wherein the composition comprises, as the radically polymerisable binder, a mono or polyfunctional (meth)acrylate or a mixture thereof and, as the photoinitiator, at least one acyl tin compound according to the general Formula, in which R 1,R 2,R 3 independently of each other are in each case a group of the Formula an aromatic C 6-30 group, which can be substituted by one or more cyclic, branched or preferably linear C 1-20 -alkyl, C 1-20 -alkenyl, C 1-20 -alkoxy, C 1-20 -alkylthio or C 1-20 -alkenoxy groups, wherein the named substituents themselves can be interrupted one or more times by -O-, -S- or -NR 9 - and/or can be substituted by one or more radically polymerisable groups and/or R 10 groups, a cyclic, branched or preferably linear C 1-20 -alkyl, C 1-20 -alkenyl, C 1-20 -alkoxy, C 1-20 -alkylthio, C 1-20 -alkenoxy or C 1-20 -acyloxy group, which can be interrupted one or more times by -O-, -S- or -NR 9 -and/or can be substituted by one or more radically polymerisable groups and/or R 10 groups, or a benzoyloxy group, -H, trimethylsilyl, -OH, halogen or -CN, R 4,R 5,R 6,R 7,R 8 wherein R 1 and R 2, taken together, can also represent a double-bonded oxygen or sulfur atom or, together with the Sn atom to which they are bonded, can form an aliphatic saturated or unsaturated ring that in addition to the Sn atom contains 2 to 6 carbon atoms and optionally one or more oxygen atoms, wherein one or more carbon atoms can be substituted by a double-bonded oxygen atom and/or the ring can be fused with an aromatic ring, independently of each other are in each case -H, a cyclic, branched or preferably linear C 1-20 -alkyl, C 1-20 -alkenyl, C 1-20 -alkyloxy or C 1-20 -alkenoxy group, which can be interrupted one or more times by -O-, -S- or -NR 9 - and/or can be substituted by one or more radically polymerisable groups and/or R 10 groups, or are-OR 9, halogen, -SR 9, -N(R 9) 2, -CF 3, -CN, -NO 2, -COOR 9 or-CONHR 9, R 9 is -H or a cyclic, branched or preferably linear C 1-20 -alkyl or C 1-20 -alkenyl group and R 10 is -OH, -C x F 2x+1 with x = 1 to 20 or -[Si(CH 3) 2] y -CH 3 with y = 1 to 20. (a) 0.001 to 5 wt % acyl tin compound(s) of the general Formula as a photoinitiator, (b) 10 to 99.999 wt % radically polymerisable binder, (c) 0 to 85 wt % filler and (d) 0 to 70 wt % additive(s), R 1,R 2,R 3 independently of each other are in each case a group of the Formula an aromatic C 6-30 group, which can be substituted by one or more cyclic, branched or preferably linear C 1-20 -alkyl, C 1-20 -alkenyl, C 1-20 -alkoxy, C 1-20 -alkylthio or C 1-20 -alkenoxy groups, wherein the named substituents themselves can be interrupted one or more times by -O-, -S- or -NR 9 - and/or can be substituted by one or more radically polymerisable groups and/or R 10 groups, a cyclic, branched or preferably linear C 1-20 -alkyl, C 1-20 -alkenyl, C 1-20 -alkoxy, C 1-20 -alkylthio, C 1-20 -alkenoxy or C 1-20 -acyloxy group, which can be interrupted one or more times by -O-, -S- or -NR 9 -and/or can be substituted by one or more radically polymerisable groups and/or R 10 groups, or a benzoyloxy group, -H, trimethylsilyl, -OH, halogen or -CN, R 4,R 5,R 6,R 7,R 8 wherein R 1 and R 2, taken together, can also represent a double-bonded oxygen or sulfur atom or, together with the Sn atom to which they are bonded, can form an aliphatic saturated or unsaturated ring that in addition to the Sn atom contains 2 to 6 carbon atoms and optionally one or more oxygen atoms, wherein one or more carbon atoms can be substituted by a double-bonded oxygen atom and/or the ring can be fused with an aromatic ring, independently of each other are in each case -H, a cyclic, branched or preferably linear C 1-20 -alkyl, C 1-20 -alkenyl, C 1-20 -alkyloxy or C 1-20 -alkenoxy group, which can be interrupted one or more times by -O-, -S- or -NR 9 - and/or can be substituted by one or more radically polymerisable groups and/or R 10 groups, or are-OR 9, halogen, -SR 9, -N(R 9) 2, -CF 3, -CN, -NO 2, -COOR 9 or-CONHR 9, R 9 is -H or a cyclic, branched or preferably linear C 1-20 -alkyl or C 1-20 -alkenyl group and R 10 is -OH, -C x F 2x+1 with x = 1 to 20 or -[Si(CH 3) 2] y -CH 3 with y = 1 to 20.