The Lensbaby Muse lens looks and acts like the original Lensbaby but comes with Lensbaby’s new Optic Swap System which offers you an almost unlimited variety of looks and styles to capture their unique visions. All Lensbaby lenses bring one area of a photo into sharpest focus with that Sweet Spot surrounded by gradually increasing blur. Photographers focus the Muse by compressing the lens and move the sweet spot by bending the flexible lens tubing. The Double Glass optic has a tack sharp sweet spot with minimal diffusion at all aperture settings.