A photo blog by Sharon Butler photo blogs images of paintings from the Frieze Art Fair that share a common trait: unprimed canvas.

Butler begins: "Since the early days of Color Field painting, working on unprimed canvas or linen has given the impression of a certain unfinished immediacy–more like the page of a sketchbook than a finished painting. At Frieze this weekend, unprimed materials (or the look of unprimed materials) were plentiful, suggesting that painters are still interested in a new realism that subtly fuses a sculptural attention to objecthood and materiality with two-dimensional shape and image."