Bahtinov Focus Tool for DSLR Camera Lens

Never worry about blurry stars again. Get perfect focus for astrophotography every time with a bahtinov focus tool. If you've ever spent hours trying to manually focus your camera on the stars at night, you know the struggle. A bahtinov focus tool will cut your setup time down to mere minutes with ease.  The simplest, easiest to use Bahtinov Focus Tool for camera lenses.   Clips to the Exterior of the Lens The tool clips to the exterior of the lens, allowing for easy mounting and dismounting, even in the dark. Removing the mask won't bump your focus ring. Three sizes are available to fit lenses with an exterior diameter between 60 and 120 mm. Be sure to measure the exterior diameter of the lens or dew shield for the best fit.  Article: How to use a Bahtinov Focus Tool with a DSLR camera Bahtinovs are easy to use. Before attaching the device, aim your lens or telescope at a bright star and manually adjust the focus of your lens or telescope until it looks close to focus. Then, ge