Chou-Tac

Hello! I'm Chou-Tac, a Product Designer from France.

If the sketching methods I’ve acquired aid me in my life and in my industrial design career, I believe that they can also help you reach your dream goal as a student or professional designer.

Leave a comment in the blog or send me an email at choutac@thedesignsketchbook.com : )

Chou-Tac

Latest Comments

  • Yuvender: “1. I’m I’m from India and my age is 22 2. I want to be a car designer but specifically…Oct 30, 23:50
  • Chou-Tac: “Hi Gilbert, I have just sent it to you in your email. :)Oct 30, 11:44
  • HOUFFON: “j’ai fait la demande de l’ebook “Get the 37 Secrets of Sneaker Designers (FREE BOOK)” mais je ne reçois pas…Oct 30, 02:52
  • John paul bartholomew Rude: “My name is John. I’m from az, usa. I’ve been a self taught artist for 25 years, I want to…Oct 29, 22:11
  • Heera: “Heera from Malaysia, Just starting my role as student in industrial design with zero knowledge but I’m truly excited to…Oct 29, 17:25
  • James: “From Erie,PA and want to learn to draw my ideas correctlyOct 29, 16:44
  • Chou-Tac: “Hi James, I wrote an article about how Talent is overrated. That may help you keep forward with positivity! :)…Oct 29, 16:37
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This tutorial dives into the nuances of using diverging light sources, like projectors, to enhance your sketches.

We saw previously at the How to Draw Cast Shadow using PARALLEL source light (such as the sun).
Today let’s see more about DIVERGING source light (such as 1 or multiple projectors).

The “Diverging source light” would fit better for objects you could hold in your hand for example.


How To Draw Cast Shadow with Diverging source light

How to draw Cast shadows with Diverging source light easily!

1. Draw cast shadow with multiple sources of lights

Cast shadow with 2 projectors
Cast shadow with 2 projectors


Cast shadow with a closer projector to the volume.

Try to draw a few and test a minimum of 5 different sources of light.
Take a pen and let me know how it goes in the comments below!

Note:
Try to draw Cast shadows without using any ruler to trace the straight lines.
It’s a good habit to take from the start.
If needed, you can click here to get a tutorial on how to draw straight lines without a ruler.


2. Cast shadow with front source light

The blue light come from the front of the cylinder.
The blue light comes from the front of the cylinder.

3. Cast shadow with back source light

The green light comes from the front of the cylinder.
The green light comes from the front of the cylinder.

4. Draw infinite possibilities of source lights

Feel free to resize the cylinder with rails to explore an infinity of possibilities for light sources.

The purple light comes from behind
The purple light comes from behind
Try multiple sources of lights
Try multiple sources of lights

Drawing exercise:

Sketch and Chill drawing with Netflix movie: One Cent Thief | Chou-Tac
Find a new way to boost your sketching practice by drawing while watching your favorite Netflix shows. This relaxed, fun approach helps distracted artists stay engaged and improve skills with quick, expressive sketches in a no-pressure environment …
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how to draw a sphere with easy shadow
Discover a straightforward method to sketch spheres with realistic shadows in six easy steps. Chou-Tac Chung guides beginners through drawing circles, ellipses, and shading to create 3D volume effortlessly. Perfect your product design sketching and build foundational skills with this tutorial! …
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How to draw with confidence
Transform your sketches from timid to terrific with “15 TIPS | Draw Confident Lines like a ‘Designer Rockstar’!” Here’s how you can elevate your game! …
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how to start drawing
Novice designer? Start your creative journey with confidence using these 8 designer tips from The Design Sketchbook! …
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TIP 170 Anybody Can Sketch: Learn a Quick 5-Minute Test to Unlock Your Skills
Discover how anyone can sketch using a simple 5-minute test focusing on transparency, simplification, and drawing strategy. Build your observation and analytical skills fast, and start turning ideas into sketches today …
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Pen pressure comparison on Photoshop
Explore Photoshop pen pressure painting in a clear 3-step guide. This article reveals how to add depth and shading dynamically, mix painting styles, and develop your digital painting skills for product design and creative sketches …
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3 comments

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  • your cylinder does my head in,I thought the light source had to be shown at a right angle to the floor but that just looks like you have drawn the light on the rail at the top, but at the front of the cylinder and then connected it to the floor at the back. :)

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