The AstrHori 18mm F8.0 shift lens is ideal for wide-angle photography with a minimum focusing distance of 0.34m. I purchased it new and used it only once. I am selling it due to a change in camera model. It's a unique lens that allows for shift, and it can be used on full-frame cameras, but cropping is necessary when shifting. - Model Name: AstrHori 18mm F8.0 - Focal Length: 18mm - Aperture: F8.0 - Minimum Focusing Distance: 0.34m - Lens Diameter: 58mm - Full-frame Thank you for looking.