For all the Garrus fans out there.

Screenshots were taken at 5x5 1080p tiles, making the full resolution 9600x5400 with 16Q CSAA.
These were then downscaled to between 2K and 4K resolution, depending on how I cropped the shot cropped from 16:9.

Many textures are vastly enhanced by the “Mass Effect 1 Updated/Improved Textures Mod”.
On the downside, in order to make tiled screenshots work it is vital to disable the games vignette effect. This can only be done by disabling all post-processing effects, which includes a number of lighting ones.