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I just did a test. 60 NEF files of a Nikon D850 import to a MacBookPro 16" BigSur. Ingest with PM 25 seconds, and ingest over apples Image Capture only 12 seconds. Why is there a speed difference of 100%?
One Destination, no variables, no renaming no applying of anything. Just ingest to a dated folder. I tried with 30 GFX Fujifilm RAF's, there is still a difference, but less. 38 sec vs 31 sec.