Hero Image: 1300 x 510 pixels; is not cropped
Feature Image: 870 x 580 pixels; Drupal will auto crop the image (the cropping is adjustable: Feature > Crop). You can use the Teaser image file for the Feature image—or use a different image.
Article Teaser Image: 870 x 580 pixels
For more information on photos, please reference the CLA Pattern Library.