I'm surprised this thread doesn't exist already, although I did the hiking thread. I didn't take this one while hiking, so I figured it didn't qualify. I'm just getting into landscape photography, and I'd love to see what other people are doing on formats smaller than 4x5.

Here's the Deschutes River from Don McGregor Viewpoint in Lapine State Park, Oregon.

Graflex 3x4 by Aidan Avery, on Flickr
3x4 RB Auto Graflex
180mm Tessar
Adox 3x4 CHS 100 II