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Which model number? Sorry, I'll take a chance at this.
Shooting with 6D Mk II, Processing with DPP4, V 188.8.131.52, on macOS V 10.13.6.
I am shooting single exposure StarScape or Landscape Astrophotography at ISO 3200-12800, exposed for 60-150 seconds, ultra-wide angle, wide open, mounted on a star tracker, and then processing to create a sense of standing under the ultra-dark skies where I took the pictures.
Here is a link to the tone Curve section in the DPP manual:
Here is a YouTube tutorial. He discusses the tone curve around the 34 minute mark.
07/31/2023: New firmware updates are available.
05/31/2023: New firmware updates are available.
05/18/2023: New firmware updates are available.
04/20/2023: New firmware version 1.4.1 is available for EOS R3
03/30/2023: New firmware updates are available.
2/07/2023: New product announcements!EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM