I've had no problem with the camera detecting the SD card. Just make sure you to it in the correct sequence per the manual. My manual focus works just fine. Good luck to you. Hope you don't have to return the camera. Don't put up with a faulty camera because this camera rocks when it works properly. Best to you Suzanne.
When inserting the SD card I found that depending upon which type I had I sometimes had to format the card which you can do using the in camera guide. It varies on the type of SD card as I have only had to do this one time and it was with an older unused SDHC card. Once I formatted the card, it was recognized just fine by the camera. Note: formatting the card will cause any data that is contained on the card to be lost. I have not had an opportunity to use the manual focus yet.