Europeana : Photography has launched, with a wide range of public domain and CC0 pictures from the nations of continental Europe (the UK seems to be almost absent). Judging by a test search for “cat”, it’s mostly landscape and architectural pictures.
Great to see Public Domain filters, though. But then there’s no way to search by the pixel size on the final download. The test samples I downloaded were pointlessly small, at just 600px to 800px. You can however use a Google Images site search and then filter by size…
site:http://www.europeana.eu/portal/en/record/ “Public Domain Marked”
But the Google Images search filters can’t yet distinguish between a photo and a good engraving…
… and adding the word “photograph” to the Google Images search is of no help in that respect. This makes it difficult to filter just for the Europeana Photography collection.