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BlueprintAPI > BlueprintAPI/Utilities > BlueprintAPI/Utilities/Struct
Adds a node that create a 'Camera Exposure Settings' from its members
Inputs
| Type | Name | Description |
|---|---|---|
| enum | Method | Luminance computation method |
| real | Low Percent | The eye adaptation will adapt to a value extracted from the luminance histogram of the scene color.The value is defined as having x percent below this brightness. Higher values give bright spots on the screen more prioritybut can lead to less stable results. Lower values give the medium and darker values more priority but might cause burn out ofbright spots.>0, <100, good values are in the range 70 .. 80 |
| real | High Percent | The eye adaptation will adapt to a value extracted from the luminance histogram of the scene color.The value is defined as having x percent below this brightness. Higher values give bright spots on the screen more prioritybut can lead to less stable results. Lower values give the medium and darker values more priority but might cause burn out ofbright spots.>0, <100, good values are in the range 80 .. 95 |
| real | Min Brightness | A good value should be positive near 0. This is the minimum brightness the auto exposure can adapt to.It should be tweaked in a dark lighting situation (too small: image appears too bright, too large: image appears too dark).Note: Tweaking emissive materials and lights or tweaking auto exposure can look the same. Tweaking auto exposure has globaleffect and defined the HDR range - you don't want to change that late in the project development.Eye Adaptation is disabled if MinBrightness = MaxBrightness |
| real | Max Brightness | A good value should be positive (2 is a good value). This is the maximum brightness the auto exposure can adapt to.It should be tweaked in a bright lighting situation (too small: image appears too bright, too large: image appears too dark).Note: Tweaking emissive materials and lights or tweaking auto exposure can look the same. Tweaking auto exposure has globaleffect and defined the HDR range - you don't want to change that late in the project development.Eye Adaptation is disabled if MinBrightness = MaxBrightness |
| real | Speed Up | In F-stops per second, should be >0 |
| real | Speed Down | In F-stops per second, should be >0 |
| real | Exposure Bias | Logarithmic adjustment for the exposure. Only used if a tonemapper is specified.0: no adjustment, -1:2x darker, -2:4x darker, 1:2x brighter, 2:4x brighter, ... |
| object | Exposure Bias Curve | Exposure compensation based on the scene EV100.Used to calibrate the final exposure differently depending on the average scene luminance.0: no adjustment, -1:2x darker, -2:4x darker, 1:2x brighter, 2:4x brighter, ... |
| object | Exposure Metering Mask | Exposure metering mask. Bright spots on the mask will have high influence on auto-exposure meteringand dark spots will have low influence. |
| real | Histogram Log Min | temporary exposed until we found good values, -8: 1/256, -10: 1/1024 |
| real | Histogram Log Max | temporary exposed until we found good values 4: 16, 8: 256 |
| real | Calibration Constant | Calibration constant for 18% albedo. |
| boolean | Apply Physical Camera Exposure | Enables physical camera exposure using ShutterSpeed/ISO/Aperture. |
Outputs
| Type | Name | Description |
|---|---|---|
| struct | Camera Exposure Settings |