Leases out canvas holders (6)
I believe the answer is:
easels
'canvas holders' is the definition.
(I've seen this in another clue)
'leases out' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'leases' anagrammed gives 'EASELS'.
(Other definitions for easels that I've seen before include "Painters' stands" , "Supports in the studio" , "Artists' supports" , "Leases (anag)" , "Supports for paintings" .)