Framing with a physical camera

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The next step in scene layout for our product visualization project

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is to establish the camera framing with a physical camera

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that's going to depend upon the aspect ratio of the rendering.

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Let's set that up in the render setup, dialogue,

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click render, set up on the main toolbar

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and in the common tab

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and the output size section,

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let's set both the width and the height to 540 pixels.

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And that will give us a square aspect

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type in 540 press tab type in 540

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press enter.

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Now we have an image aspect of one and a pixel aspect of one.

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Close the render, set up dialogue.

00:46

We want to create a physical camera

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and to make it easier on ourselves. Let's snap to 3d grid points.

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So enable 3d snaps

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and then back out in the top viewport

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zoom out with control alt and middle mouse button

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and pan our track with the middle mouse button.

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And let's create a physical camera in that top viewport,

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go to the crate panel

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and choose the cameras panel,

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click on the button labeled physical

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and then over in the top view,

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click on this center line here, which is the y axis of the world

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and then drag closer to the geometry,

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but don't quite reach the geometry just so we'll be

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able to select that target a little bit more easily.

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In the future

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release. The mouse,

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that camera and its target had been created.

01:38

Ryle

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to exit out of physical camera creation.

01:43

Let's load that camera into one of the view ports.

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We can sacrifice this front view port here.

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Click on the Viewport name which is front

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and choose cameras

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fizz camera 01.

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Now we are looking through that camera's lens.

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We want to enable safe frames. So we get an accurate representation of the framing.

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Go over to that viewport label once again

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and enable show safe frames.

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We additionally want this to be a shaded view

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so we can toggle the wireframe display

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with F three.

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And now we're in a default standard shaded view,

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we can interactively dolly the camera back.

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We've got a button down here

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which is Dolly camera

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click on that and we can click and drag in this camera viewport to dolly back.

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We can also pan or position or track with the middle mouse button

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and we can sort of intuitively frame our shot.

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But I want this to be very precise

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and I actually know exactly where I want the camera and its target to be.

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So I'm just gonna plug those values in

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and it'll be easier to see over here in the left viewport.

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So I'll go back to the select object tool

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and then dolly back in the left view with control alt and middle mouse

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and pan with the middle mouse.

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Select that camera. If it's not already selected,

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grab the move tool

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and just plug in these values. Here,

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we'll give it an X value of zero

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A Y value of negative 50 centimeters,

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press tab

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and set the Z value to 11 centimeters.

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Now, that camera is

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positioned where I want it to be,

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let's also position the target,

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select that target.

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And we've got some values to type in once again

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with an X value of zero

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A Y value of negative five, which I just coincidentally happened to have here,

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we want a Y value of negative five

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and then a Z value of 10 centimeters

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and I've set it up this way so that the camera is just slightly above

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the top of the radio.

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So we'll be able to see the top of the radio.

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Now, we want to zoom in with the camera's lens

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and that's an optical effect of field of view.

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We'll go back to the select object tool,

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select the camera,

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go over to the modify panel

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and we can zoom in by specifying a field of view

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in degrees.

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So enable specify FOV

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we can click and drag on that spinner to zoom in or out.

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Let's set the field of view to 15 degrees

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and press enter.

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Now, I mostly have the framing that I want.

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Although as you can see,

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we've cropped off the bottom of our subject here

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with a physical camera, we can simulate a view camera

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also known as a tilt shift camera in

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which we can offset the camera's lens from its sensor.

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And that's accomplished in the modify panel, scroll down,

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open up perspective control

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and we have lens shift, horizontal and vertical.

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If we click and drag on the spinner for the vertical lens shift,

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we can see what's happening here. We're able to

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reposition

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the frame without changing the camera's position.

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Let's set the vertical lens shift amount

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to 35.

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All right. That's really a perfect framing for this.

05:14

The last touches to our layout will involve setting up

05:17

a ground plane and also just rotating our helper.

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Let's grab that helper

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and rotate it.

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Let's plug in a value here

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in the Z rotation field. Let's give it a value of 30 degrees.

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We also need a ground plane for the floor.

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So go back to the create panel

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to geometry

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standard primitives

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plane,

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click and drag to create that in the top viewport,

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right? Click to exit creation mode,

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select the move tool

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set its position to the origin XY and Z values all of zero

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with that plane still selected,

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go into the modified panel

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and we'll just change up its length and width.

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Give it a length of 50 centimeters,

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press tab and give it a width of 70 centimeters,

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making it extra wide just to make sure that if we later change the aspect ratio,

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the plane will be actually wider than the available field of view.