In my case, I had best luck with adapter cards that came with Samsung microSD cards. Other reliable brands, like SanDisk, did not work. BTW, this problem showed up for me an a entry-level camcorder (Canon Vixia HF-R800), and no other (out of 8 other cameras/camcorders I've used). This new D3200 is marvelous because of its super light weight, just 17.8 oz./505g with battery and SD card, making it as light as the lightest Nikon DSLRs ever made. It's the same weight as the D3100, and lighter than the D40. It adds a new MOVIE REC button near the shutter and a much higher-resolution but same-size 3" LCD as the D3100. 1. I have a Nikon d3100, a few weeks ago I had an issue where my files all got lost. I figured it was due to using an old memory card so I replaced my memory card. I have only used the new 32g card two times (formatting them in the camera each shoot). Yesterday I came home from a shoot and all but one of the photos are ‘corrupted’ I can see When you look through the viewfinder, on the lower right hand side in some brackets, you will see an number. That number indicates how many images you can add to your memory card. Look on page 6 of your user manual. An 8GB card can probably hold thousands of images, depending on your quality and size settings. Replace the broken card and format the new SD card to a proper format. Suggested SD card formats: SD/SDHC Card - FAT32; SDXC or Shooting Movie - exFAT #2. Unlock SD Card - Switch SD Card Lock to the Off Side. Error: SD Card is locked, the lock of SD card is on the ON size. How to Fix: Step 1. Unplug or take out the SD card from the Camera properly. . Best memory cards for Nikon * Check the maximum size and; Click on the model number . Nikon Action Cameras. Model: D3100: SD/SDHC/SDXC: 256GB: D3200: Page 24 of the manual states that any images on the internal memory can only be accessed if no memory card is installed. So if you installed a card into the camera before trying to retrieve the images, you will need to remove the card to see if anything was stored in the internal memory. Good luck. Share. Improve this answer.

nikon d3100 sd card size