Attempting to learn how to use the RAW Black Points tool. Fuji X-T2 & other X-trans imbed a black level in EXIF like many cams. For the X-T2, the level varies in the range of 1024. This appears to result in black clipping - perhaps as a noise reduction strategy. But for astro image pre-processing, it drops out faint shadow detail.
I’d like to lower the black point used during RAW conversion so blacks are not clipped. First question: is this what happens if I used negative slider values in the RAW Black Points tool? Second question: Are the slider units arbitrary or related to pixel values? It would be useful if the slider units corresponded to EXIF black level values.