It seems to me this recipe should do what you want:

##Trigger:

[Tumblr](https://ifttt.com/tumblr) channel, [New photo post](https://ifttt.com/channels/tumblr/triggers/36-new-photo-post) trigger

Available Ingredients:

You'll want `PhotoFullUrl` or `PhotoThumbUrl` or possibly even `Url`, depending on what you want to post. Probably also want to use `Caption` and or `Tags`.

##Action:

[Facebook](https://ifttt.com/facebook) channel

You probably want to use "Upload a photo from URL" action, but possibly "Create a link post" and use the URL from your Tumblr post. It all depends on how you want it to appear. ("Create status message" only allows for plain text.)

[This recipe](https://ifttt.com/recipes/208188-upload-tumblr-photo-post-to-facebook-album) is probably enough to get you started. There are others: [search for recipes that use Tumblr and Facebook](https://ifttt.com/recipes/search?ac=false&page=2&q=tumblr+facebook).