I went shooting at Exporail St-Constant and used my panasonic GX85 with an olympus 7-14mm F2.8, a panasonic 20mm F1.7 and a 42.5mm F1.7.
Most shot are made using L.monochrome profile and fiddling with the filters and contrast.
All shot in JPG and direct from the camera.
Here is the Flickr share : Lowkey Exporail album from FLICKR
I strongly recommend visiting Exporail if you are interested in trains but also in photography. The lighting in one of the hangar is really nice.
Here are the informations to get there : Exporail St-Constant informations
Couple of examples :