Word Lens seems to help in translating Spanish to English and English to Spanish using the built in camera.
Word Lens -- download it free on the App Store
Now available for iPhone 4, iPhone 3gs, and iPod Touch 4.
Languages currently available using in-app purchase:
- Spanish to English
- English to Spanish
Word Lens instantly translates printed words from one language to another using the video camera on your iPhone. No network delay, no roaming fees, and no reception problems.
Word Lens is a dictionary -- evolved. It looks up words for you, and shows them in context. You can use Word Lens on your vacations to translate restaurant menus, street signs, and other things that have clearly printed words.