4 ms·DSLR camera bodies aren't cast aluminium; they're cast magnesium (which contain 10 % aluminium or so).by dom0 9y agoDSLR camera bodies aren't cast aluminium; they're cast magnesium (which contain 10 % aluminium or so).throwanem 9y agoWhich DSLRs? All the ones I've seen and handled have been PC-GF30 or something very similar.dom0 9y agoThe low-end ones are wound around some folded sheet steel core; but higher end DSLRs have cast cases. Gripping surfaces are rubberized.