I am not sure whether the cards support those formats or not. It may depend on the driver as well.
On the older Hi8 cameras, the TBC/DNR does not work when playing back NTSC tapes, I don't know if this is the case on the Analog playback capable D8 cameras or not as I haven't had a working one for a while.
The Video does go through a analog-to-digital conversion in the camera if the TBC and/or DNR function is active, as those things operate in the digital domain. I am not sure otherwise, haven't studied the schematics in detail. It is in any case not DV compressed like what you will get from the firewire.
What I've personally have done with NTSC tapes as someone in PAL-land, is pass the video through a Pioneer DVR-440H DVD recorder to use it's TBC-ish functionality as we lack a native NTSC camera with TBC. This and a number of related models support PAL60 and NTSC-4.43 and outputs it as normal NTSC. It's not quite as solid as the build-in TBC, or a panasonic DMR-ES10 though and can occasionally give some left-right movement if the video is really unstable. The PAL model DMR-ES10 does not support PAL60. It may support NTSC 4.43, but I haven't tested, I only know it supports normal NTSC output.
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