Ok here are 3 quick samples. All D7100, uncropped and no post-processing. Elephant and bird are Nikkor DX 55-300mm f/4.5-5.6. Elephant shot at 116mm, ISO 400, 1/500, f/5.6. Bird shot at 300mm, ISO 800, 1/500 f/7.1.
Landscape is Sigma 17-50mm f/2.8, shot at 19mm, ISO 200, 1/100 f/4.5.