Ipad 3 won't read photos from sd card

Hello there, Debbyresq.

The following Knowledge Base article provides some great recommendations and additional information on using the Apple iPad Camera Connection Kit with your device:

iPad: Using the Apple iPad Camera Connection Kit

http://support.apple.com/kb/ht4101

Improving performance

For best results and performance, see these guidelines:

• Connect the iPad Camera Connector or SD Card Reader directly to the iPad and digital camera.
• iPad Camera Connector only supports digital cameras and some USB audio/MIDI devices. Learn about using the iPad Camera Connector with unsupported USB devices.
• If your device isn't recognized, verify that it's configured correctly. See the user manual for your device for more information.
• Certain devices may be recognized only when used with a powered USB hub.
• Here are the supported SD cards and image-transfer protocols:
• Picture Transfer Protocol (PTP)
• Mass Storage Device protocol
• SDSC
• SDHC
• miniSD
• microSD
• MMC
• SDXC
• If your camera supports both PTP and Mass Storage Device modes, you may need to use both modes to import all media content. If some files don't import as expected using one mode, try switching to the other mode and importing again. Some cameras may refer to PTP as Pictbridge or PTP/Pictbridge.
• If you see a message that the "Attached volume appears to be invalid," make sure the SD card or digital media in the camera is correctly formatted.

Thanks for reaching out to Apple Support Communities.

Cheers,

Pedro.