Corona Cameras detect & pinpoint Electric Corona UV PD emissions from faults on high & medium voltage apparatuses and enable effective, safe and non-disruptive predictive maintenance. These cameras enable cost reductions by avoiding project stretch and revisits. The settings configured in the Render Setup dialog will be used as default values for the Corona Camera. You can override these defaults using the Override settings.
Corona Camara
Corona camara provides all of the photographic controls found in 3ds Max native free, target, and physical cameras, plus additional Corona-specific options such as VR, panorama, and fisheye projection. It also supports the use of custom cameras.
UV imaging technology allows for locating, pinpointing and documenting flash-arc corona and arcing partial discharges (PD) in overhead power lines, HV substations and other equipment. Identifying corona discharge locations enables a shift from time-based to predictive maintenance planning.
The ULIRVISION TD100 is an innovative NDT-Non Destructive Testing equipment that detects, displays and documents flash-arc corona and arcing PD with high sensitivity in the visible light range during daytime inspections. It is based on OFIL’s proprietary DayCor technology. This enables the identification of potential faults, which reduces costly repairs and outages.
Interactive Rendering
Corona Rendering automatically updates the rendered image in real-time as you make changes to your scene. This allows you to modify, reposition, and transform objects, tweak or create materials, adjust the environment, lights, cameras, and more. This happens quickly, typically within a couple of seconds. Corona uses a simple yet powerful lighting system that is highly responsive to adjustments. Lights can be redirected to specific objects, and you can control their intensity and color.
Caustics are difficult to calculate and can significantly increase render times, so for many scenes they’re disabled by default. If caustics are necessary, they can be enabled by using one of the Corona Render presets.
Tone Mapping
Tone mapping is a powerful post-processing tool inside the VFB, which adjusts highlights and shadows to produce more realistic images. It includes features such as contrast, saturation, white balance, green-magenta tint and vignette intensity. ACES OT (Output Transform) is an operator added to the tone mapping stack to provide better adjustment of highlights and color saturation. It can be enabled for improved results or disabled if it isn’t needed in a particular scene.
Corona provides fast caustics solving based on the material properties and the ability to enable reflective and refractive caustics per-material for even more control. You can also limit the distribution based on steepness of slope, e.g. to avoid trees growing on cliffs etc. The VFB supports standard image editing functions such as LightMix and post-production effects such as bloom & glare.
Depth Of Field
A depth of field is the range of distances that are in focus. It is related to the lens’s focal length and aperture. It affects the sharpness of out-of-focus areas (called bokeh). The depth of field is controlled by the camera settings. To enable the depth of field in Corona, go to Render Setup > Scene and check the Depth of Field box.
For best results, we recommend using the default values. However, you can override the defaults by specifying an object pivot in the Scene Graph. This allows you to specify a different focusing method than the target distance or the default focal point. You can also use a depth of field calculator, which will display a DoF chart based on your chosen parameters.
Bokeh
Bokeh is a visual effect that creates blur around the edges of objects in a scene. The quality of the bokeh depends on the lens (prime vs zoom) and its apurture. Prime lenses generally have bigger apurtures and longer focal lengths than zoom lenses.
This makes them faster and produce better bokeh. However, this also means that they can have more imperfections and artifacts.
Corona includes an anti-aliasing solution that provides high quality results without increasing render times too much. You can change the GI / AA balance to control how much computing power is spent on GI or anti-aliasing. There are many other post-processing tools available in the Corona VFB that allow you to quickly and easily alter your scenes. These include LUTs, contrast, vignette intensity, saturation and color tint.
Wrapping It Up
Corona camara is an affordable render engine that makes it possible to bring the power of high-end rendering to anyone. Their licensing model is fair and allows them to keep the price low while bringing in some profit. Power lines and transformers are inspected for corona outbreaks and surface partial discharge (PD) that can lead to outages. This allows for cost effective preventive maintenance to avoid expensive failures and disruptions.
