The Slave Ship at the event, to see it and be moved to increase British anti-slavery efforts. Placed next to the painting were lines from Turner's own untitled poem, written in 1812: The first impression that the painting creates is of an enormous deep-red sunset over a stormy sea, an indication of an approaching typhoon. Upon closer inspection one can discern a ship sailing off into the distance. The masts of the ship are red, matching the blood-red colour of the sky and the sickly copper colour of the water, which serves to blur the lines between various objects in the painting. The
Colour cast Colour cast A colour cast is a tint of a particular colour, usually unwanted, which affects the whole, or portion, of a photographic image evenly. Certain types of light can cause film and digital cameras to have a colour cast. Illuminating a subject with light sources of different colour temperatures will usually cause colour cast problems in the shadows. In general, the human eye does not notice the unnatural colour, because our eyes and brains adjust and compensate for different types of light in ways that cameras cannot. In film, colour casts can also be caused by problems in development.