I revisited printing with the Canon MX850 this weekend. I printed a 4-image collage on a sheet of 8.5×11 inch Canon Glossy Photo paper. I had the printer settings for optimization and enhancement disabled, since this gave the most accurate printing in previous trials. The results are shown below. Note that my scanner pooped out about 1/3 of the way through the picture—I presume not permanently—so the images aren’t exactly the same scale and crop.
There is, maybe, a slight reddish shift in the left frame, but it is quite good overall. This print will go on display at the office. For album use, the resolution of the professional print services is better, but for most uses the printer is quite good. For anything hanging on a wall, this is great.