What are the essential elements that make up a painting? In
no particular order, composition, drawing, perspective, values, edges, colour –
all of these contribute to the outcome. Edges are arguably the least
appreciated of these, but contribute greatly to the three-dimensionality of a painting
that aims at being representational.
I was re-reading Charles Sovek’s “Catching Light in your
Paintings” recently, in which he lists the four kinds of edges – Hard, Firm, Soft,
and Lost. Hard, and Lost, are probably the
easiest on figure out.
Hard edges are clear, well-lit, in focus, and catch the eye.
Lost edges are valuable in all styles for taking bits of the
picture out of focus, in contrast with
the bits that are sharp and meant to take the attention. Lost edges
automatically occur when two edges share the same dark tone, even if the
colours are different. I find them especially useful for getting edges that are
on the shadow side lost in the dark background that l often use.
Soft edges occur when there is a transition of colour or
value (tone) with no distinct margin – you can simply soften adjacent edges by
blurring them or blending them together.
Firm edges are somewhere between hard and soft - a distinct transition, but clearly neither
sharp nor blurred.
The images below illustrate the different types of edge.
In the pastel with the Samovar and Tilly lamp, there are two
light sources – the set-up is lit by a spot from the right, and the Tilley lamp
has an internal light.
The lemon is the brightest object, and as you go around the
circumference you proceed from a Hard edge to a Soft edge – and internally
there is a Soft edge between the half-tone and shadow. The reflection of the
lemon goes from Firm to Lost. The samovar goes from Hard where it is
highlighted, to Lost in the shadow, along its perimeter. Internally there are
firm to soft passages. Likewise for the Tilley lamp, specially the top.
The Spanish coffee mill shows similar transitions in its edges
to emphasise its three dimensionality.
I hope this clarifies the mystery of the edges!
