rb61 wrote:
Which is recommended? Pulling card from camera and using card reader or direct from camera?
Wear on camera card cover, contacts?
Wear on output cover door, battery drain?
OMD E-M10ii
There are any number of previous discussions of this topic here on UHH.
In general, it's better to pull the card from the camera and use a card reader. For one, it's usually faster... but that depends upon connectivity of the camera versus that of the card reader.
It's also less risky on a couple levels:
1. If for any reason the download using cable from the camera is interrupted, it's possible images could be corrupted.
2. If the USB socket of the camera gets worn or damaged, chances are it will be a pretty expensive repair. In many cameras those sockets are part of the main circuit board, which is a pricey part that would probably need to be entirely replaced. It also requires fairly complete tear down of the camera to replace that main board in most cases. In contrast, the memory card socket is a sub-assembly that would be less expensive to replace and is a lot more easily accessed in most cameras, so would involve less labor too.
3. Memory card sockets are DESIGNED for frequent card swaps... especially SD card sockets. It's pretty hard to damage them! USB sockets are designed for occasional use.... less frequent plugging and unplugging.
Personally I sometimes use a dozen or more different cards in my cameras during a day's shoot. It would be a major pain in the arse to reinstall them all in the cameras to download several thousand images. Besides, the card reader built into my desktop is far, far faster than the USB 2.0 connection of the camera cable (newer cameras might have faster connectivity.... but so do card readers).
After many hundreds of card changes over 15 years shooting digital almost exclusively... and another 5+ years shooting it less frequently before that... I've NEVER had a memory card or card socket (or door covering the card socket) get damaged or wear out. And I'm often swapping memory cards "under pressure", with one hand and "by feel", not looking at what I'm doing.... while continuing to shoot with another camera. Even doing that... never had a problem.
I have had exactly two cards fail (out of more than 100).... but one failed after the very first use and the other was bad right out of the package. Neither was due to "damage".
I've had images get corrupted once... but that was when I was still using an accessory card reader and had changed how it was connected to my computer, via a USB hub. As soon as I swapped some things around and connected the reader more directly, the problem was solved (and nothing was lost, because I only "copy" images from my memory cards... I never "move" them.... and I don't use automated downloading software of any type).