Mr. Fosse, Sitting at my feet is an 8-core AMD workstation, used for derivative trading. I put this machine together myself, integrating the mainboard, CPU, ECC memory, PS and cooling. So I know something about solid state (SS) components. The memory card(s) that we all use is/are basically NOT designed to be repeatedly mounted (put into the camera) and unmounted (removed from the camera). Though you can do this many times over, you will shorten the life of your card by an exponential amount. And please let me repeat that word "exponential". Murphy's Law (know him?) says that after you have taken those "critical 1650 shots" and in pulling your memory card from your camera you break something in the SS memory chip. And there goes that work . . . . Though admittedly not a working pro (but a very serious amateur) if I was working an event I would first DOUBLE back up those pics onto two separate devices. And I would try to do this (ongoing) during the event, not after. This hyper-caution comes from years of dealing with hardware failures . . . and that from SS parts that were never touched by human hands. My point is this, LR is an "editor" and part of that editing work is deleting pictures that I don't want. Either on my WORKING hard drive, or my camera. Especially now that modern DSLRs have Bluetooth connectivity, there are pics that I want (temporarily) to remain on my camera. And under no circumstances, and I mean NO . . . do I want to be repeatedly handling those in-camera memory cards. As for putting a delete feature on LR, it would be easy to program safety features into a "delete" function. It could easily be made into a three step process with multiple confirms. Past that, if you manage to accidentally delete critical photos, you should also not be using scissors and/or sharp knives of any kind. Cheers. Kenny
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