Public domain photo of Big Bend that was altered with Luminar 4 (AI sky enhancer and accent AI effects), then the Photoshop paintbrush, then Topaz AI Denoise, then the Photoshop paintbrush, then the Exposure X5 plug-in (central clarity effect), the ON1 Photo 10 plug-in (dynamic contrast effect), then the Topaz ReStyle plug-in, then the ON1 Photo 10 plug-in (natural sunshine effect), then FotoSketcher (oil pastel effect), then the Exposure X5 plug-in (central clarity effect and burning), then the Photoshop paintbrush, and then the Exposure X5 plug-in (exposure adjustment). Public domain image by the National Park Service. Full-size JPEG image download on Flickr.