Software

WATER WORKS Mesmerising digital watercolour tools heighten the appeal of this increasingly useful natural media package

We see how well Rebelle 3 recreates natural media on the digital canvas.

Rebelle’s selection of digital paper surfaces can affect the path and behaviour of the watercolour paint

Can digital painting ever feel as natural as working in traditional media? We’re not there yet, but there’s an army of software developers dedicated to achieving this goal. Painter and ArtRage are the bestknown programs to offer ‘natural media’, a digital recreation of

physical paints and surfaces, but Rebelle is an enticing alternative – and, in this third major release, seems capable of producing a few tricks the big guns can’t yet match.

Rebelle offers a choice of media to draw or paint with: acrylic, pastel, pencil, ink and more – although not oils. But its biggest draw is its watercolour technology, which has been significantly updated in version 3. Make a stroke with one colour, then switch colour and paint over or near the first stroke, then watch as the two strokes blend and flow together in a convincingly natural way. You can also load the brush with water to increase the extent of the interaction.

If you’re using Rebelle 3 on Microsoft’s Surface Pro tablet computer, you can use the device’s built-in accelerometer to control the flow of paint: try physically tipping the tablet screen in one direction, and watch the watercolour droplets respond to the effect of gravity, as fed back to the software through the accelerometer. It’s something close to

magic. And unlike physical watercolour, you can ‘freeze’ the paint movement with a single key press. Rebelle’s selection of digital paper surfaces can also affect the path and behaviour of the watercolour paint, depending on how rough the grain is.

create your own brushes

If there’s a drawback, it’s that you have to find the best brush settings yourself, through trial and error: there are only a few brush presets to choose between until you’ve taken the time to make your own. At least that task is made easier in Rebelle 3 with the Brush Creator. You can import graphics to represent brush shapes or grain, making some truly fanciful creations a possibility, then play with Spacing, Opacity and Jitter before saving the result as a permanent preset.

That isn’t the only trick up Rebelle 3’s sleeve: you can now paint with masking fluid on its own layer, which gives you more control over how the mask affects the flow of paint.

Elsewhere, new additions include a Magic Wand tool, and canvas size that’s only limited by your computer memory’s ability to accommodate it. More technically minded artists will appreciate the options to use a ruler or set up a perspective grid, and to have a reference image displayed in an on-screen overlay.

There’s still plenty of untapped potential for Rebelle’s developers to explore in future releases – more presets and more paint media come to mind – but the effectiveness of the watercolours alone is enough to make this affordable software worth adding to your creative toolbox.

Rebelle 3 takes digital watercolours to a new level, with paint that responds to ‘blowing’ or tipping your Surface tablet. Art by Kamila Stankiewicz. Rebelle’s DropEngine technology is what enables its droplets to behave in such a natural manner.

Artist Hal used Rebelle 3’s Masking Fluid Layer to save time when adding colour to a line drawing.

Rebelle 3 enables you to work in a variety of wet and dry media, including inks, as demonstrated by Philipp Neundorf.

The clearly laid-out controls on the left of the screen helped Kamila to precisely control the effect of her brushes.

Illustrator and comic book artist Harvey Bunda says Rebelle was the software that made his transition to digital art possible.