The issue of textures looking pixelated in large renders is due to the original dimension of the texture itself. I assume if your textures are 9Mb each they are of a fair size, dimension-wise? Are your textures uncompressed images? If so, they are most likely around 2000x3000 pixels. That should be decent for the size you are rendering. Also, try a test render with no d.o.f., see if there is any change. Hard to be more specific without seein the pic firsthand. AgentSmith

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