As I was leaving a local Nature Area, I noticed this feather on the path. I took a series of images to try a new technique a friend showed me. This technique helps eliminate noise and helps the fine details stand out. I opened them in Adobe Camera Raw, made my adjustments, then opened them in Photoshop, in layers and Auto-Aligned them. In Layers Panel, converted them to Smart Objects. Then chose Layer>Smart Objects>Stack Mode > Median. You can experiment with other stack modes also, but Median seems to work best. Your Photoshop version must be an extended version or a Creative Cloud version. Then flatten your image and you will see the noise is reduced drastically and to me seems a hair sharper. Maybe from just the noise reduction. I tried it in the studio with ISO 6400 and it made a huge difference. This image was at ISO 400.