I sometimes use my Tumblelog to post the odd photo from my iPhone. Generally I don’t want to post iPhone images to Flickr (typically these are spur-of-the-moment snapshots and low quality). There are actually two very nice free apps for the iPhone that let me post directly to Tumblr (called, imaginatively, Tumble and TheTumbler – I’m still trying to decide which one I prefer).
The problem is that I also feed my blog titles and my del.icio.us links to Tumblr, and my Flickr images, and sometimes I will also post a text note there too. Tumblr does not provide feeds on a per-item-type basis, it only gives an aggregated feed containing all the stuff you’ve uploaded there, or pulled in from other sources. Plus, if you then add that to FriendFeed, you get duplicates, even though FF can now work that out to some extent and roll them up into single entries.
Anyway… I put together a quick Yahoo Pipe which filters just the photos that were uploaded directly to Tumblr (ignoring Flickr images, for example). Feel free to clone and re-use, you can just enter your own Tumblr feed URL in the entry box at the top.
Update: well, shoot. It doesn’t ignore the Flickr images at all, does it? Gah. Apparently they are imported to Tumblr as images… which makes me suspect that even when I remove photos from Flickr they will stay on Tumblr. How annoying. And the more I look at the way that the Tumblr feed is constructed, the more I don’t like it at all.