Here are my photos that I've published exclusively on Steem so far (plus one new). You can use them freely under the terms of the Creative Commons Attribution license, attribute to Hive account@letc on Steem. If you want them in higher resolution, just write me in a comment.

In the Shade

Botanical

Grass Silhouette at Twilight

Elektrichka

Forest

After the Rain

Fireweed

Power Line Twilight

Back to Life (time-lapse)

(click to watch)

The photos are hosted on #IPFS (peer-to-peer distributed filesystem) and embedded here via ipfs.pics gateway. I believe that IPFS is a very suitable companion to Steem for media content distribution, as it is decentralized too.