A couple of quick updates on the Eye-fi Card.
Eye-fi has released new firmware that allow use without a router. The Eye-Fi card itself now can act as an access point allowing you to download your photo’s directly to your laptop or iPad without having an active wi-fi connection/router available/configured.
It works pretty well however you do not have the ability to change the SSID you are connecting to or the WPA2 Password for the card. It can be a bit tricky setting it up for the first time.
Secondly I have recived a CF adapter and have tested it with the eye-fi card. The good news It works, The bad news, range is drastically reduced.
Using the Eye-fi card in my Nikon P7000 point and shoot. I can send from anywhere in the house and the images show up very rapidly on my laptop. With the Card in the adapter and in my D300 I can send the images to the laptop from about 30ft away ( thru 3 walls) but any further and the images don’t transfer until I get back into range. As well it seems to take quite a bit longer to send the images when only 2 walls were in the way.
This is probaly due to the metal in the card adapter as well as the heavier metal in the body of the D300 sheilding the transmission. I did not have any problems when shooting in the same room, so I expect that in a studio enviroment or at a trade show where you are in an open area you would not have any issues.