The ocean complicates matters by being bouncy, but it reflects light the same way as does glass or tinfoil.
Butter, by Carol L. Douglas, oil on canvasboard. Even something as transparent as Saran Wrap will have reflections. |
Reflections are a distortion of the surrounding environment. Thatâs true whether youâre painting them in water or from glassware in a still life. Managing them is mainly a question of observation.
Imagine an ocean that is perfectly flat, and that you can walk on water. Looking at your feet, you can see straight down into the water. Itâs not reflecting anything. Looking at a rubber ducky floating ten feet away, youâre looking at the surface at about a 26° angle. Youâll see a reflection of the ducky, the sky, and a glimpse of whatâs under the surface. As you look farther away, the angle gets smaller and smaller, and all you see is the reflected sky.
Hard Drive, by Carol L. Douglas, oil on canvasboard. |
Reflection involves two rays – an incoming (incident) ray and an outgoing (reflected) ray. Physics tells us that the angles are identical but on opposite sides of a tangent. This is why the reflection of a boat needs to be directly below the real object in your painting. You can add other colors into that area, but the reflection canât be wider than the object itâs reflecting.
The reflection should be directly below the object. Don’t let it grow wider. |
Water is transparent, but it has a shiny surface. Some rays of light make it through and bounce back at us from the sea floor. Reflections in glass work the same way. You can see through the glass in the surface thatâs facing you, but the curving sides reflect light from around the room. Because glass is imperfect, these reflections will be distorted.
The ocean complicates matters by being bouncy. Even on the calmest day, the surface of water is never perfectly flat; itâs wavy or worse, just like a fun-house mirror. Waves are a series of irregular curves. How they reflect light depends on what plane youâre seeing at that nano-second. It seems like the easiest thing to do is to capture it in a photo and paint from that, but what we see in photos is sometimes very different from what we perceive in life.
My quick watercolor of waves, done from the deck of American Eagle during our Age of Sail workshop |
Instead, sit a moment with and watch how patterns seem to repeat. Theyâre never exactly the same, since waves are a stochastic process (think random but repeating). But theyâre close enough to discern general patterns.
Solid objects can also trip you up in their reflections. Consider the humble spoon. Itâs concave. That distorts its reflections. Thereâs no point in trying to predict what you might see; itâs best to just look. Likewise, a mirror only reflects straight back at you if youâre in front of it.
Tin foil hat, by Carol L. Douglas. Oil on canvasboard. |
Only smooth surfaces reflect light coherently enough to make reflections. Thatâs why burlap has no reflections. Sometimes, when water is being wind-whipped, it doesnât have reflections either. To paint such a sea, keep the contrast low.
Ottawa House, by Carol L. Douglas, oil on canvasboard, available. The wind-whipped sea has very little contrast, but it does have texture. |
Some people say that reflections should be lower in chroma than their objects, but I donât think thatâs true. Often, the ocean seems to concentrate color. Sometimes, the water will be lightest at the horizon; other days there will be a deep band there. However, the farther away, the more its colors shift toward blue-violet.