Top critical review
Works, but read the small print
on 29 March 2012
I bought this because I wanted hassle free synching between my SLR and my iPad. What I hadn't realised is that the non-pro version does not upstream raw files. You have to read through the FAQ on the web site to find this out. This lead to a lot of faffing around trying to get it to work (both using my home network and directly). Once I shot in jpeg, it all started to work really well. My solution with my Canon EOS 400 is to save photographs in both formats, raw and jpeg. Also note that for this to work in my camera, I had to use an adapter for the Eye-fi SDHC card (Extreme CF). This adapter works just fine, I haven't noticed any loss in wifi range.
Set up wise, I found some of the language rather confusing and don't value the eye-fi web site for uploading my photographs. I use Apple's photostream and individually upload photographs to Facebook. You can go off, shoot some pictures and, when you turn the camera on in range of wifi, it notices and uploads the pictures to my iPad. Alternatively, if you are shooting whilst in the wifi zone, it loads the pictures as you shoot.