Hm, installing Arrival seems to have reset my Coalesced.ini. Probably because it reinstalled Patch 1.02...

So, uh, here's my long overdue graphics-tweaking mini-guide for ME2!

In the Coalesced.ini (again, found in Mass Effect 2\BioGame\Config\PC\Cooked\), search for [SystemSettings].

And here are all the lines I've changed within that section to improve the shadows and graphics. Turning off Film Grain, Motion Blur, and VSync is up to you, but I prefer mine off.

DetailMode=5				(Default=2)
EnableHighPolyChars=True		(Default=False)
FilmGrain=False				(Default=True)
MaxAnistropy=16				(Default=4)
MaxMultisamples=16			(Default=1)
MaxShadowResolution=1024		(Default=512)
MinShadowResolution=64			(Default=32)
MotionBlur=False			(Default=True)
ParticleLODBias=-1			(Default=0)
ShadowFilterQualityBias=2		(Default=0)
SkeletalMeshLODBias=-1			(Default=0)
Trilinear=True				(Default=False)
UseVSync=False				(Default=True)

This tweak is to tone down the already over-the-top bloom effects in the game. It's found in [SFXGame.BioWorldInfo] and under "DefaultPostProcessSettings." It's actually all on one line, but I've separated the settings so that it's easier to see.

bEnableDOF=True
bEnableSceneEffect=True
Bloom_Scale=0.1				(Default=0.2)
DOF_BlurKernelSize=10.0
DOF_MaxNearBlurAmount=0			(Default=0.1)
DOF_MaxFarBlurAmount=0			(Default=0.3)
DOF_FocusInnerRadius=1000.0

Annnd, here's some comparison screenshots!

Default

Tweaked