Exposure - Determines how affected the scene is by the light. Increasing the EV (exposure value) by 1 will double the amount of light in the image.
Gamma - Adjust the image's intensity withgamma. Decreasing the gamma will make the image darker while increasing the gamma will lighten the image.
Denoising will even out noise in the image, both in the Real-time View and in the final rendering. In the Real-time View, it will kick in after 1 second and be refreshed every 5 seconds (the interval can be adjusted in Preferences). You can always follow the Denoise state in the Heads Up Display. Denoising can also be toggled from the Ribbon, but the button will be disabled, if you have locked your image style.
Denoise Blend - The Denoiser creates a denoised image which is blended with the rendered image. The Denoise Blend slider enables you to control the strength of the denoise effect. Decreasing the value will allow more of the original noise in the image. If you have a scene with fine details or textures, the denoise may wipe out the details - try to decrease the Denoise Blend value.
Real-time vs. Rendering with denoise: When Denoise is enabled, what you see in the Real-time View and the result of the rendering, may have slight variations. The difference is that when rendering images, the normal and diffuse maps are taken into account in order to produce the best possible result. These are not applied in the Real-time Denoiser. This is also why a rendering, with denoise enabled, will output the Normal and Diffuse passes, even if they are not selected in the Render Dialog.
Denoise and Custom Control rendering: Denoising will not have the same impact on renderings made with Custom Control, because the noise pattern in custom control is different from the one in Real-time or Maximum time/sample rendering where the denoiser is have more noticeable results.
Bloom Intensity - The brightness of the light fringing or glow.
Bloom Radius - Determines how far the bloom glow extents in pixels.
The Bloom radius is defined in pixels and this value is not relative to the resolution. This means that the bloom radius will not scale in the Render Output has a larger resolution than the Real-Time View.
Bloom Threshold - The clipping of the bloom glow to bright pixels. A value of 0 means no clipping. Larger values focus the bloom on the brightest pixels.
Vignette Strength - Determines how strong the vignette is, the higher the value the more solid the vignetting color will seem in the corners.
Vignetting Color - Choose the color that the vignette fades into, defaults to black. Click in the color-field to trigger the color selector.
Chromatic Aberration occurs in real life when the camera lens is unable focus all colors to the same point. This results in colored fringing along the edges of the object. With Image styles you get an approximation of the effect.
Aberration Strength - Determines how strong the effect is.
Aberration Bias - Controls the color of the distortion.
Using Chromatic Aberration on a model that exceeds the image size may cause artefacts near the edges.
Legacy image styles
If you open a KeyShot 7 scene with Image Adjustments/Effects they will be added as a Basic Image Style