The HDR or High Dynamic Range mode functions by taking images with each specified active iris and then combining these images into one, to give you a dense and high quality point cloud. Generally, 3-4 optimal iris settings give you a high quality image. However, for black and very shiny objects, you may need more points to give you good data.
In order to retain depth of focus for your images, it is recommended to keep the irises low and go higher in exposure time
We recommend that you start using HDR with the below iris settings. Please note that these iris settings are meant to help you get started, they will need to be tuned for best results with the specific objects you're trying to image.
If you need to address missing data in the point cloud, for darker areas include a higher iris setting or increase the exposure time (or use a combination of both) and for lighter areas include a lower active iris setting.
Black objects: Exposure Time- 23000 | Irises: 22, 27, 33, 37, 43
Dark-colored objects: Exposure Time - 12500 | Irises: 27, 33, 37, 40
Multi-colored objects: Exposure Time - 8333 | Irises: 17, 27, 33,37
Metallic objects: Exposure Time -8333 | Irises: 12, 18, 23, 30
Very shiny objects: Exposure Time: 45710 | Irises: 10, 13, 18, 23, 28, 33, 38
White or light-colored objects: Exposure Time - 8333 | Irises: 16, 24, 27
Remember to turn on the reflection filter, under Preferences to remove noise points, if any.