Acratech Spherical Panoramic Head for Sigma 8mm f/3.5 Fisheye Lenses

The Acratech Spherical Panoramic Head for Sigma 8mm f/3.5 Fisheye Lenses allows you to shoot spherical panoramic images and to also do VR photography. It is designed to be used with Sigma 8mm f/3.5 fisheye lenses. Using software such as PT Gui, the 4 fisheye images can be stitched together to create spectacular images.Features: Weighs less than 1 lb.Indexes in 90 degree increments.Reference marker for 1st shot, 2nd shot etc.Panning base allows full 360 degree rotation.A specially machined flat provides a surface for compass orientation.Machined notch in the lens mounting ring allows for easy lens installation.Laser etched focus mark provides fast focus reference and a quick and easy way to verify that your camera is positioned exactly vertically.Large easy to read 15mm bulls eye level.Locking lever clamp Precision CNC machined from 6061 T-6 aluminum and stainless steel.Precision laser etching cannot wear or rub off.Solid precision feel.All knobs are secured so they cannot vibrate loose or fall off.Beautiful satin black anodized finish.