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Sketch Rendering Tutorial

sketch rendering tutorial coloring photoshop illustration concept sketch demo training lesson

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#1 waikit

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Posted 15 November 2011 - 03:47 AM

Dear members,

I have recently done a quick sketch rendering demo in my company, and I have prepared a step by step screenshots tutorial that I'd like to share here with you all.
Basically it is showing what tools and techniques I use to render a quick concept sketch line drawing using the mouse only. No pen tablet is needed, really.
The time I spent for this one is around 1 hour, including making the screenshots.

In my daily work, I think I must be able to render 8 of these illustrations in one day. They can be used for internal concepts reviews, or even reviewing with the client in the early concept stage.

Of course you can spend more time on more details, but for this demo the purpose is to quickly render the basic coloring,shading,lighting and highlights.

I have used the Eton Axis radio for this tutorial. This product is absolutely a great object to practice your sketching skills. It has basic geometries like cylinders and boxes. Actually I did a sketch demo for this one too, but I don't think I should cover that, as there are many good sketch demos available online already. By the way, my sketch is not perfect (ellipses are off), but it should be good enough ;)

The following 4 Photoshop tools are the most important ones for this particular tutorial:

- Layers :separate the different materials/colors
- Polygonal lasso + Paint bucket : color large surfaces
- Brush : color smaller surface
- Dodge + Burn : lighting and shading surfaces

All right, so here we go.
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#2 waikit

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Posted 15 November 2011 - 03:58 AM

Check the layers window on the right. You'll see that layer 1 and 2 are actually the line drawings scans. I have put their layers in the 'multiply' mode to make the white background transparent.
So below those I can put all the layers for the coloring. And I start with the main grey colors with selecting the related body surfaces with the polygonal lasso tool and use the paint bucket to fill it with a color

Attached File  1.jpg   212.05KB   54 downloads

#3 waikit

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Posted 15 November 2011 - 04:00 AM

Finish coloring the grey surfaces

Attached File  2.jpg   181.83KB   21 downloads

#4 waikit

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Posted 15 November 2011 - 04:02 AM

Use the polygonal lasso and paint bucket tools to color the red surfaces

Attached File  3.jpg   207.23KB   22 downloads
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#5 waikit

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Posted 15 November 2011 - 04:03 AM

Finish coloring the red surfaces

Attached File  4.jpg   182.63KB   20 downloads

#6 waikit

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Posted 15 November 2011 - 04:04 AM

Use the same tools to color the cylinder shapes (put them in a different layer)

Attached File  5.jpg   181.71KB   13 downloads

#7 waikit

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Posted 15 November 2011 - 04:06 AM

Color the cone shapes with the brush tool, as these surfaces are small enough to quickly fill it with a color using the brush tool. Again, use a new layer for this.

Attached File  6.jpg   211.82KB   12 downloads

#8 waikit

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Posted 15 November 2011 - 04:06 AM

Color the handles

Attached File  7.jpg   185.02KB   11 downloads

#9 waikit

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Posted 15 November 2011 - 04:08 AM

Color the inside of the cylinder shape at the front (use different layer)

Attached File  8.jpg   226.05KB   10 downloads

#10 waikit

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Posted 15 November 2011 - 04:10 AM

All right, we have just finished the basic coloring. Now put all the layers in a group, and copy this group (I have named the copy group 'step 2')
We are using these group of layers to do the shading and lighting. If you mess up, then you can use the original layers from the first group to redo.

Attached File  10.jpg   189.23KB   12 downloads

#11 waikit

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Posted 15 November 2011 - 04:14 AM

I have chosen the lighting direction coming from the left.
So select the grey surfaces that are facing that direction and use the hue/saturation adjustment tool to make those areas lighter.

Attached File  11.jpg   202.5KB   17 downloads

#12 waikit

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Posted 15 November 2011 - 04:15 AM

Do the same thing for the red surfaces

Attached File  12.jpg   218.63KB   11 downloads

#13 waikit

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Posted 15 November 2011 - 04:16 AM

Do the same thing for the angled surface. Actually the right one should be more lighter (my mistake)

Attached File  13.jpg   233.79KB   12 downloads

#14 waikit

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Posted 15 November 2011 - 04:17 AM

That area too..

Attached File  14.jpg   218.54KB   12 downloads

#15 waikit

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Posted 15 November 2011 - 04:21 AM

Now we can start putting lighting and shading on the cylinder shapes, using the dodge and burn tools. Just adjust the size of the tool and sweep a couple of time over the surface that you want to edit.
Starting with the shading first..

Attached File  15.jpg   209.2KB   15 downloads





Also tagged with one or more of these keywords: sketch, rendering, tutorial, coloring, photoshop, illustration, concept sketch, demo, training, lesson

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