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90 votes

How can I get better results when doing camera motion tracking?

Here are a few pointers for camera tracking (for more details follow the links in blue text): 1. Prepare your scene carefully before shooting to make tracking and reconstruction easier Avoid sudden ...
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60 votes
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How to make a cycles light emisson object invisible to the camera?

You can turn off Ray Visibility of the 'emission object'. In Blender 3.0+ go to Object Properties > Visibility, open up the Ray Visibility panel and disable the Camera property: As of Blender 2.8x,...
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  • 1,875
34 votes
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How to smooth camera animation to have fluid feel?

A way to achieve camera motion with fluid non-synthetic feel is with softbody camera rig. This will do automatic easing of any motion and will save some graph-editor work. Create a filled Circle with ...
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30 votes
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Zoom window magnification

An alternative solution is to use a Refraction shader. Since this does not require changes to the geometry of the original "image" it can be very easily animated. The key is to be able to control the ...
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  • 42.4k
29 votes
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How can I make a plane always look at camera?

I think I know what you're talking about (cause I'm a huge fan of these kind of oldschool 3d-imitating games :)). You may use a Damped Track constraint. Select the plane, go to Constraints header, ...
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  • 32.4k
29 votes
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3x4 camera matrix from blender camera

I wrote the function get_3x4_RT_matrix_from_blender to do this, listed below. ...
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  • 1,154
27 votes
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Objects disappear when looking through camera

I guess this is a clipping distance issue. Select your Camera, go to the Camera Data tab and check the End value of your Clipping Range. Blender 2.8x Blender 2.7x
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  • 14.8k
23 votes
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Ctrl Alt Numpad 0 keeps moving my object?

The answer was to first select the camera and press Ctrl+Numpad 0 and then perform the Ctrl+Alt+Numpad 0 User CD38 on http://blenderartists.org/forum/archive/index.php/t-78116.html explains: I'm ...
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  • 533
22 votes
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Render an object from "all" perspectives

You can use the Curves Extra Objects Add-on to create a spiral and convert this into a Path. A Follow Path constraint and Track To constraint on your camera will then allow your camera to follow the ...
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21 votes

How to make a cycles light emisson object invisible to the camera?

You can set up a custom emission material by adding another Transparent BSDF and determine the (camera) visibility of each shader at render time by using the Is Camera Ray output of the Light Path ...
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21 votes
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How to render an object without its shadow?

One option is turning off the Shadow property per object (Properties > Object > Cycles Settings): As of Blender 2.8x the Cycles Settings panel has been renamed to Visibility and the Shadow property ...
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20 votes
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How can I get the camera's projection matrix?

With some helpful references from Campbell (ideasman42), I was able to find the relevant Blender C code that creates the perspective matrix (from properties that were actually available via bpy), and ...
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20 votes
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Cycles generates distorted depth

Thanks to the Blender dev forum, I figured it out. The Cycles camera is a pinhole model that "uses the distance between a given point and the pinhole as its Z depth". So we cannot apply the depth to ...
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19 votes
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How do I make Front Ortho the Active Camera?

Go to the front view by pressing NumPad 1. Then press Ctrl+Alt+NumPad 0 to set the camera to the current view. Then switch the camera from perspective to orthographic. Unlike with a perspective ...
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19 votes
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How to automatically fit the camera to objects in the view?

There is an operator to do exactly this. it can be called from Python or accessed from a menu. Select the objects you wish to put in the camera view. View -> Align View -> Align Active Camera ...
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19 votes
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Rolling shutter effect

Everything in Blender is artificial. (lighting, shading, ...) Blender Cycles has the rolling shutter functionality. Go to the scene settings and enable motion blur. In the Shutter Type, select Top To ...
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  • 24.8k
17 votes

Why are straight lines sloping in render?

The lens shift controls on the camera exist in Blender precisely to solve this problem. Photographers use tilt-shift lenses to do the same thing. Rather than rotating the camera upwards to the ...
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  • 7,401
17 votes

Project scene to plane in real-time

As has already been mentioned, the same techniques as used in Zoom Windows Magnification can be used here - but this is very dependent on getting the vector maths correct, which is also critically ...
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  • 42.4k
16 votes

Is there a Way to Align Camera to View and Fit the View?

After hitting CtrlAltNumpad 0 (and being disappointed by a cropped version of what you were expecting), select the camera (in the outliner panel), press G, then press the middle mouse button and move ...
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  • 261
16 votes
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Is it possible, without knowing Python, to animate between orthographic and perspective camera view?

To achieve a smooth transition from a Perspective camera to Ortho (and back), @someonewithpc's answer gets you part of the way there. However, that solution just jumps between Perspective and Ortho; ...
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  • 6,878
16 votes

3x4 camera matrix from blender camera

rfabbri's excellent answer works in many cases but not always. Based on his version I created a new one that (at least in my tests) works in all cases, including portrait and landscape pixel aspect ...
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  • 261
16 votes
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How do you change camera safe area transparency?

This is called the passepartout. It can be changed or disabled (with the camera selected) under the Object Data properties panel > Display rollout. Note: the Amaranth Toolset addon adds a ...
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16 votes
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How to make objects in the scene become physically smaller the further they are from the camera?

You can do this by drivers. Right click on Scale X property and Add Driver > Manually Create Later (Single). Go to Graph Editor and switch to Drivers mode. Draw a line like this: (this line will ...
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  • 27.3k
15 votes

How can I make a camera the active one?

Another way to achieve camera switching in Blender is through the VSE or Video Sequence Editor. Establish multiple cameras in the scene. Add a scene strip to the VSE for each camera and set the ...
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  • 8,804
15 votes
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What is blender's camera projection matrix model?

The following Python code builds a calibration matrix K commonly used in computer vision from a Blender camera. You can then use the generated K matrix to compare against your own. ...
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