 Lorne Campbell describes the tiny figure of the woman seen through the window and her reflection in the water as " small miracles of painting " , and says that " the attention to detail far exceeds that of Jan van Eyck and the skill of execution is <unk> " . He notes that these tiny details would have been impossible for a viewer to observe when the altarpiece was in its intended position . Other areas of the panel , however , have been described as dull and <unk> . One critic wrote that the areas of the floor and most of the cupboard behind her seem unfinished and " much too narrow and <unk> in effect " . A number of objects placed on the cupboard are now barely visible save for their bases . The object on the right seated on legs alongside a box is likely a small pitcher , possibly a reliquary . A moulding to the left of the cupboard may represent a doorway . 
