Rbode wrote:
I don't have Lightroom, but when Photos opens there is a box in the upper left that you need to uncheck and Photos won't open.
If there is Preferences in Lightroom you can direct your devices there, at least in Preferences/General in iPhoto is I where checked off for iPhoto to open when a camera is connected to the mac.
I found the box to uncheck in Photos so that part of this is solved. Thanks
But I can find nothing in Lightroom preferences or system preferences to allow me to set what is to open when a camera (or SD card) is detected. It has to be there somewhere but I can't find it!