I am reading up the info related to Eye-Fi card and I like to idea.... but it seems HAS TO HAS a network/lan connection before you can transfer the photo to the computer....

Just wonder if anyone have used it? My idea is I am taking photo on-site, while it is automatically upload to the computer to Lightroom or something without me worry about it. And I can instantly see the quality of photo taken on my laptop and do my adjustment accordingly.