The large mechanical dials on the top deck are carved from solid metal in order to allow more direct and purposeful exposure control. Photographers have easy access to a diverse array of innovative features, helping them create one-of-a-kind images. That's what the Df is built for: helping photographers relay their ideas more intuitively via mechanical dials, and then using cutting-edge innovations to produce the results they envisioned. With the Df, each frame becomes meaningful again.