Sigma 4.5mm f/2.8 EX DC HSM Fisheye Lens for Nikon
The Sigma 4.5mm f/2.8 EX DC HSM Fisheye Lens for Nikon is a spherical fisheye that captures a full 180º view resulting in a circular image. The lens produces exaggerated perspectives and distortions. It is compatible with crop frame sensor F mount cameras only. Pairing this lens with full frame sensors will result in vignetting, unless the camera has a crop mode you can use. The focal length equivalent on crop frame sensors is 6.75mm. This lens is ideal for events, fine art, and experimentation.
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