Eye-Fi Pro X2 16GB Wireless Flash Memory Wireless Flash Memory Card Model EYE-FI-16PC-FF Eye-Fi Pro X2 16GB Wireless Flash Memory Wireless Flash Memory Card Model EYE-FI-16PC-FF

Pros: I don't know why so many people complain about this being hard to setup, or hard to use. I had it installed and transferring pictures in about 2 minutes with my Sony RX100. Pics wirelessly go to my iPhone 5 in about 3 to 5 seconds, that's at 20 megapixel. Great product, thank you eye-fi.!

Cons: None so far.

Pros: Geotagging

Cons: Card will lock up while shooting, and anything which hasn't been transfered yet is lost.

Transfers take about 30 seconds per image, so the 100 pics you just took that day at Disney will take almost an hour to transfer. Camera has to be on to transfer so battery takes a hit. For that effort, it makes more sense not to use the wireless feature for 2 or more shots.

System needed constant attention. "Did this one finish?" "Can I turn the camera off now?" Not worth the headache.

If you happen to mark an image for Facebook (etc.) after the image has been backed up to your computer, it will not be uploaded to Facebook.

Other Thoughts: This card takes a significant amount of power for the WiFi feature. The SD adapter which came with the product could not handle the load so I had to use an Eye-Fi capable camcorder attached as R/W to my computer in order to change certain settings.