Lesson video

My name's Mrs. Taylor, and I'm really pleased you can join me here today for our lesson.

Our lesson today is rendering techniques, and this is part of the communication unit.

The outcome: I can render a 3D sketch to show the light source and effect.

We have four keywords.

Rendering, to add details like shading, texture, and depth to a sketch to make it appear more realistic.

Tone, the lightness or darkness of an area, which helps create a sense of dimension in the image.

Shadow, an unlit area of an object that is blocking light.

And highlight, the brightest part of an object lit by a light source.

We have two learning cycles.

Tone and shading is the first, and lightness or darkness is the second.

Let's get started with tone and shading.

Design work can be brought to life through the use of tone and shade.

This can be achieved by using a pencil, colour pencil crayons, or marker pens.

We add tone and shade to design work to make a drawing more realistic, show visually what material the drawing is made from and add depth, texture, and detail to a design.

Using dots spaced closely or far apart from one another is called stippling.

Block colour, adding one colour.

Blending, adding a number of colours blended together.

Tonal shading, using a pencil.

Or crosshatching.

Here we have a check.

Which image shows tonal shading? Is it A, B, or C? Pause the video and have a go.

Fantastic.

Let's check.

That's right, it's A.

Well done.

When using any of the rendering techniques, you can create depth by using tone.

You can create different tones by adjusting pencil pressure, for example, from red to yellow when blending.

Or here we can see tonal shading going from dark to light.

Stippling is where we apply more dots for darker areas and fewer dots for lighter areas, and we can see that here with the arrow going from light to dark.

Crosshatching is where we place the lines closer together for darker areas and farther apart for lighter areas.

Again, we can see that here with the arrow moving from light to dark.

Let's have a check.

True or false? When using the stippling technique to show darker tone.

The dots need to be closer together.

Pause the video.

Let's check.

That's right.

It's true because when the dots are closer together, the tone appears darker due to their density, which reduces the amount of white space.

Your first task, task A< part one.

Discuss what makes this 3D drawing look more realistic.

Pause the video.

Let's have a look at some of the answers you may have come up with.

How can you see the shadow and the use of highlights where the light hits the image? Also, the texture used to make the surface look realistic, in this case, fur on the dog? Part two, applying tone.

Using only your pencil, apply tone by varying pressure on each square, shading from dark to light.

Pause the video.

Wonderful.

Let's check.

Does yours look similar to this? Part three, using two shading techniques, stippling and blending, use your pencil to shade the boxes, transitioning from dark to light to indicate the direction of the light source.

Pause the video.

Wonderful.

Let's have a look at some of the answers that you may have come up with.

Do your examples look similar to this? Well done.

And now we move on to our second learning cycle, lightness or darkness.

Tone means how light or dark something looks.

If you press your pencil hard, the tone is dark.

If you press softly, the tone is light.

Tone helps make drawings look more real by showing shadows and light.

When adding tone to a drawing, decide where the light is coming from.

This helps you know where to place the shadows.

Marking out shadow and highlights.

We have a cube in the centre, a light source above and behind it.

The highlight is on the top surface.

There is a midtone on the side surface, a core shadow on the front surface that we can see, and a cast shadow.

Let's have a check.

Which image shows the correct shadow.

Is it A or B? Pause the video.

Brilliant.

Let's check.

That's right, it's A.

Well done.

Marking out shadow and highlights.

Let's go through some more details.

The light source, the highlight, this is the lightest part of an object where light hits directly.

The midtone is the middle shade between light and dark.

The core shadow is the shadow on the object itself, adding depth.

And the cast shadow is the dark area on a surface where light is blocked by an object.

Let's have a check.

We've got several true or false statements.

One, a highlight would be the lightest colour on a tonal drawing.

Two, tone just refers to shadow.

Three, the core shadow is the shadow created by the object itself.

And four, you don't need to decide on a position of the light source.

Pause the video and have a go.

Wonderful.

Let's look at your answers.

Number one is true.

Number two is false.

Number three is true, and number four is false.

Well done.

Task B, part one.

On the following shapes, mark on the highlights core shadow and cast shadow.

Don't forget to consider where the light source is.

Pause the video.

Well done.

Let's have a look at your answers.

How did you get on? Part two of task B.

Choose one rendering technique and shade the isometric view of a mobile phone using a single coloured pencil.

You could choose from stippling, blending, tonal shading, or crosshatching.

Remember, choose just one of those.

Also remember to identify the light source and show shadow and highlight.

Pause the video and have a go.

Wonderful.

Let's have a look at some of the answers you may have come up with.

Here we have an example.

We can see very clearly the light source in the top right and everything close to that light source is very light and bright.

Further away, the tonal shading becomes darker and at the very edge, there's a dark shadow.

Does yours look similar to this? Here we have a summary of our learning today.

Rendering adds tone and shading to make drawings look realistic.

Tone and shade create depth, texture and material effects.

Techniques for rendering include tonal shading, crosshatching, blending, block colour, and stippling.

It is important to identify the light source to place highlights and shadows correctly.

You've done so well this lesson.

Thank you so much for joining me.

Well done.