Q3 PTP transfer to MacBook - Thunderbolt / USB-C

[ikc]

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I've searched the forum, and this topic has not been clearly addressed. 

Has anyone successfully transferred images from the camera to a laptop/Lightroom using USB-C and the PTP protocol? I originally thought it was the standard USB-C cable that I was using, so I upgraded to a Thunderbolt cable. I still have not been able to transfer images. On the import screen in Lightroom Classic, the image frames show up, but the images do not, and I cannot successfully import them directly from the camera. 

[CalStanford]

I only use Mass Storage and just copy/paste files in Finder. Works like a charme, as fast as with an SD card reader.

[ikc]

Works great. Thanks for the tips. I probably didn't need the Thunderbolt cable, but it is supposed to be a much better data transfer cable than a standard USB-C. I wonder how much of a difference it makes on speed given the limitations of the port on the camera. 

[Qwertynm]

I don’t think the port is the bottle neck there but the readspeed of the card is.  Fastest you‘re going to get is 300MB/s for an UHS-II V90 card (theoretically). USB-C 3.1 is 5-10Gbps. I don’t know what Leica has in their spec sheets but the port is as slow/or as fast as a cardreader. So therefore my assumption that the card is the bottleneck 

[CalStanford]

9 hours ago, ikc said:

Works great. Thanks for the tips. I probably didn't need the Thunderbolt cable, but it is supposed to be a much better data transfer cable than a standard USB-C. I wonder how much of a difference it makes on speed given the limitations of the port on the camera. 

A USB-C 3.2 or 4.0 cable would have sufficed but a Thunderbolt one certainly won't hurt. You're getting the optimal speed the card can give you.