Full frame size
• Designed with nearly Full frame chip-size DSLR cameras in mind.
• FMC triplet APO design.
• Produced entirely with the best Ohara optical glasses.
• Reducing factor 0.8X.
• Adjustable design, for perfect back focus it can be used with other models of refractor
• 48mm filter ready
• William Optics polished anodized finish.
• All internal surfaces threaded and blackened to prevent reflections.
Easy to Use
• Will accept any standard 48mm T-ring for your camera.