相机

此面板包含用于在剪辑编辑器中拍摄当前正在编辑的动画的相机的所有设置。

相机预设

预定义的设置可以在这里使用。但这样设置的失真系数和主点不包括在预设，并应在即使使用摄像机预设填补。

传感器

• 矩形盒宽度

  在相机的CCD传感器的宽度。这个值可以在摄像头规格上找到。

  像素

  是CCD传感器的像素方面。这个值可以在相机规格中找到，但也可以被猜出。例如，您知道素材应该是1920×1080，但图像本身是1280×1080。在这种情况下，像素方面是：1920/1280 = 1.5。

光心

在相机中使用的透镜的光学中心。在大多数情况下，它等于图像中心，但它可以是在某些特殊情况下不同。检查在这种情况下相机/镜头的规格。在滑块下方有一个 设置中心 按钮，可用于设置光学中心到图像的中心。

Tip

Optical Center also know as principal point in photogrammetry.

镜头

焦距

不言自明;这是电影拍摄的焦距。它可以以毫米或像素为单位设置。

畸变模型

Mathematical function to convert distorted to undistorted coordinates.

• 多项式

  Polynomial radial distortion. Uses three distortion coefficients: K1, K2, and K3.

  分割

  It defines high distortions, which makes this model suitable much better for cameras with fisheye lenses. Use two distortion coefficients: K1, K2.

  Nuke

  Distortion model used by the Nuke compositor. Use two distortion coefficients K1, K2.

  Brown

  Brown-Conrady is one of most advanced mathematical lens distortion models. Used to model both radial and tangential distortion. Can use up to four radial distortion coefficients: K1 - K4 and up to two tangential distortion coefficients: P1 and P2.

系数

Coefficients are used to compensate for lens distortion when the movie was shot. Currently these values can be tweaked by hand only (there are no calibration tools yet) using tools available in Distortion mode. Basically, just tweak K1 until solving is most accurate for the known focal length (but also take grid and annotations into account to prevent “impossible” distortion).

• Radial Distortion Coefficients (K1 - K4)

  The coefficients in lens distortion models work independent from each other. Positive values will give a barrel distortion while negative values give a pincushion distortion. With a mixture of both negative and positive coefficients you can define more complicated mustache distortions or other complex distortions, that are less common but not rare.

  

  Example of radial distortion for positive and negative K coefficients.

  Tangential Distortion Coefficients (P1, P2)

  Works independent and allow to compensate for situations when the sensor is not perpendicular to a group of lens. The optical center (also called principal point) will be shifted (distorted) from the center of the sensor. P1 is used to compensate for sensor rotation in Z (vertical) axes, while P2 is for compensating sensor rotation in X (horizontal) axes. Such distortions can be found in sources from cameras with a sensor stabilization system.

  

  Example of tangential distortion for P coefficients.