As far as I understand, with the Processing API you don’t define a resolution explicitly. You get the desired resolution by using the right bounding box and image dimensions. So in the current ipynb example a 1000x1000m bounding box and 100x100px image size gives you 10m resolution. So for the same bounding box you would just request a 50x50px image. I hope that someone working on the service side can confirm this or correct me if I’m wrong.