Sorry, to clarify, I think Lytro provides Mac only Lytro photo processing software to manipulate the picture you take (to make 'living pictures', as they call it).
But for others to view it (outside of the Lytro software, of course), you have to use Lytro's patented algorithms (by posting to their Flickr-like site or a plug-in that is created by them... such as a facebook plug-in).
IMO, it makes sense since part of their business model is not just to license or sell camera tech, but to also create a photo viewing/sharing site that depends on their algorithm. It's their patents that they revolve the model around (otherwise it's very hard to attract investors to fund your start-up).
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Excerpt from their terms of use:
"Users
Users are those of our customers register to use Lytro.com. Users may, subject to these Terms of Use, (1) create and maintain their own picture gallery where they can upload, store, display, and share their pictures taken with the Lytro camera (which we call "living pictures"), (2) view other users living pictures, and (3) use other services which we may provide to Lytro.com users. ..."
"Visitors
Visitors may, subject to these Terms of Use, access and browse Lytro.com and use the other Lytro.com services provided to visitors, such as viewing, commenting on, and sharing others living pictures. Visitors may, but are not required to, give us their email address. If you do so, you agree that the email address you provide is valid and yours. ..."
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I did a quick Google on the business model, and got this from Camera Technica:
"Viewing Living Images
This brings up one of the more controversial parts of the business model . Although you can manipulate the light field files on your own computer to your hearts content, sharing with others requires more work. Since viewing the files takes special algorithms and lots of processing power, sharing is not as simple as emailing jpegs off to Grandma. In order to share a photo with others which can be viewed interactively, it must be hosted on a server (presumably Lytros own) and viewed with the appropriate browser or Facebook plugin. For those used to the infinite number of ways that a standard jpeg file can be viewed and shared, this may be unnerving. But this may just be part of the adjustment to a new way of experiencing photographs."
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