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Example: Distortion

The difference between the two types of distortion is slightly visible. The Cubic type should be used in some camera tracking programs like SynthEyes, Boujou, etc.

Example: F-Stop (F-Number)

Note: All the images from the following examples are rendered using the V-Ray Sun and Sky set with their default parameters.

The F-Number parameter controls the aperture size of the virtual camera. Lowering the F-Number value increases the aperture size and so makes the image brighter since more light enters the camera. In reverse, increasing the F-Number makes the image darker, as the aperture is closed. This parameter also determines the amount of the Depth of Field (DOF) effect. 

The images in this example show the effect of changing the F-Number. The following constant settings were used for some parameters: Exposure is on, Shutter Speed is 60.0, ISO is 200, Vignetting is on, White Balance is white.

Example: Shutter Speed

The Shutter Speed parameter determines the exposure time for the virtual camera. The longer this time is (small shutter speed values), the brighter the image would be. In reverse - if the exposure time is shorter (high shutter speed value), the image would get darker. This parameter also affects the motion blur effect, see the Motion Blur Example.

The images in this example show the effect of changing the Shutter Speed. The following constant settings were used for some parameters: Exposure is on, F-Number is 8.0, ISO is 200, Vignetting is on, and White Balance is white.

Example: ISO (Film Speed

)

The ISO parameter determines the sensitivity of the film and consequently the brightness of the image. If the ISO value is high (film is more sensitive to light), the image is brighter. Lower ISO values mean that the film is less sensitive and produces a darker image.

The images in this example show the effect of changing the ISO. The following constant settings were used for some parameters: Exposure is on, Shutter Speed is 60.0, F-Number is 8.0, Vignetting is on, and White Balance is white.

Example: White Balance

Using the White Balance color allows additional modification of the image output. Objects in the scene that have the specified color will appear white in the image. E.g. for daylight scenes this should be peach color to compensate for the color of the sun light etc.

The images in this example show the effect of changing the White Balance. The following constant settings were used for some parameters: Exposure is on, F-Number is 8.0, Shutter Speed is 200.0,   ISO is 200.0, and Vignetting is off.

Example: Vignetting

Example: Depth Of Field (DOF)

Enable DoF effect from the the Depth of Field tab tab of the physical camera. The effect is most strongly seen when the camera is close to an object, for example when doing a macro photo. For a strong DoF effect, the camera aperture must be open wide (i.e. small F-Number value). That may lead to a very burnt and bright image, so to preserve the same illuminosity over the whole image, the the Shutter Speed must must be shortened. Last but not least the Focus Distance determines which part of the scene will be actually on focus. To get the focus near, you would need a small value and reverse - higher value for far focus.

For the images in this example, the following constant settings were used for some parameters: Exposure is on is set to Exposure Value, F-Number is 1.0, Shutter speed is 4000Exposure Value is 7.0, Film speed (ISO) is 100.0Shutter Speed is 125, Vignetting is off.

 

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Column width 20%   Column width 60% Image slider Panel borderStyle none Image AddedImage Removed   Depth of Field is off Panel borderStyle none Image AddedImage Removed  Depth of Field is on,  Focus Distance is 4.34  is 3 m  Panel borderStyle none Image AddedImage Removed Depth of Field is on,  Focus Distance is 7.30  is 5 m  Column width 20%

 

 

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Example: Motion Blur (MB)

Enable the Motion Blur effect from the the Motion Blur tab tab of the physical camera. The amount of motion blur is determined by the speed of the moving object itself as well as the Shutter Speed setting of the camera. Long shutter speeds will produce more motion blur, as the movement of the object is tracked over a longer time. In reverse, short shutter speeds will produce less motion blur. Keep in mind that to preserve the same brightness over the whole image, the F-Number value has to be corrected as well.

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In this example, the falling roof tiles are moving faster than the flower pot, which causes the difference in the motion blur effect.

For the images in this example, the following constant settings were used for some parameters: Exposure is on, Film speed (ISO) is 200.0, and is set to Exposure Value, Exposure Value is set to 7 and Vignetting is on.

 

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Column width 20%   Column width 60% Image slider Panel borderStyle none

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Image Added Motion Blur is off Panel borderStyle none

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Image Added Motion Blur is on, F-Number

 is 16

is 8.0, Shutter Speed is 20.0

 

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Image Added Motion Blur is on, F-Number is 8.0, Shutter Speed

 is 80

is 40.0 Column width 20%