This photo was shot from the Spadina Street Bridge over the rail lines looking east towards Union Station and the city centre.
I spent some time looking over the scene and chose a composition that uses a technique known as leading lines to draw attention to the CN Tower - the main subject of the image.
Leading lines pave an easy path for the eye to follow through different elements of the photograph. They start at the bottom of the frame and guide the eye upwards and inwards, from the foreground of the image to the background, leading toward the main subject.
When leading lines, such as these train light trails, connect the foreground to the background of a scene, they help to create depth and dimensionality which draws the viewer into the image.
The light trails come from three trains. The two on the right are GO trains, which is why the trails are green in colour. The train on the left is an UP Express, which is much shorter and not as colourful. Neither the colour nor intensity of the light trails were altered or enhanced.
The image was shot with a Nikon D850 on a tripod with the ISO set at 64, and an exposure time of 37 seconds. I used a Nikon f2.8 14-24mm lens at 16mm set at an aperture of f11.