Display settings

Display settings can be found in the tools panel. Display settings allows you to manipulate your rendered image (especially in terms of exposure - brightness, color saturation, and contrast) and apply other post‐processing effects.

EXPOSURE

  • Tonemapping: Select the tonemapping method: standard / filmic
  • Exposure value (EV): Controls the exposure of the rendered image. Increasing the EV value by 1 will affect the image by halving the exposure
  • Gamma: The gamma factor typically ranges from 1.0 to 2.5. In order to compensate for the darkening of the image due to non-linear output, we apply a gamma correction scheme to the pixel values before displaying the image

EXPOSURE PRESETS (Presto only)
The exposure presets adjust the display settings to the appropriate exposure based on the given image. You can see the effects of this option on an underexposed and overexposed image in the following images.

Presets can be access by clicking on the hamburger icon. The presets should be used as a guide to correctly adjust the intensity of the lights in the scene and avoid using unrealistic values. The available options are:

  • Exposure: Interior
  • Exposure: Interior sunlight
  • Exposure: Exterior

Display settings: Exposure

Underexposed Overexposed Applying the Exposure: Interior - Sunlight preset

FILTERING

  • Sharpness: This is the most important option for controlling filtering during downsampling of the image. It is advised to use the default of 50%, which is a balanced value between blurring and sharpening. A value near 0% produces a more blurred image, while a value near 100% produces a more sharpened image.
  • Burn: The burn value can be used to compress a high dynamic range (HDR) into a low dynamic range (LDR) image, presentable on screens and other limited range devices. Setting burn to 100% means that there is no compression.
  • Vignetting: In photography and optics, vignetting is a reduction of an image's brightness or saturation at the periphery compared to the image center.
  • Chroma: Increase the value to enhance the colors of the image. Chroma acts as a saturation control.
  • Contrast: Determines the difference in the color and brightness of the object and the objects within the same field of view. 0% equals a disabled control. 100% is the maximum value that can be set.
  • White balance (K): Change the overall color balance of a render, so that it matches the expected physical phenomenon. A value of 6500K is usually used to balance sunlight and make white walls appear white, even if the sunlight is yellowish.

Display settings: Filtering

3D LUT

LUT stands for Look Up Table. Lut files can be used to color grade your rendering using the pre-installed presets or use your own files. You can place additional lut files in .cube format by copying them to the Thea Data/LUT folder.

Display settings: 3D LUT

Original image Sepia LUT applied Vintage LUT applied

GLARE

Glare is the effect of a high amount of photons arriving at a film, causing lighting to also flood nearby areas. The shape of the glare itself depends on the shape of the diaphragm.

  • Glare type: Select how many blades you want. Radial equals bloom.
  • Glare weight: Controls the intensity of the glare.
  • Glare radius: Controls the length of the blades.

Display settings: Glare

DENOISER

Select from two AI-accelerated denoisers. 'Intel Open Image Denoiser' or 'NVIDIA OptiX' Denoiser.
The denoisers can be enabled before or after the rendering has finished. If you enable the denoiser before starting the engine, two additional channels are enabled to ensure the best denoising quality. These channels are normals and 'raw diffuse color'.

Blend with original: Controls the blending between the original and the denoised image.

Display settings: Denoiser

PHOTOMETRIC ANALYSIS

Luminance and illuminance properties of a scene are the two key factors in lighting design; they describe the energy arriving to our eyes and space correspondingly, but in the way we, humans, perceive and interpret lighting.

  • Min / Max lum‐Illum: represent the range of the Luminance (cd/m2). By changing these values, the false color image is being adjusted accordingly.

Display settings: Photometric analysis