The LAOWA Magic Format Converter is a high-quality lens adapter compatible with EF-E mounts. It allows you to use EF-mount lenses on GFX cameras in full-frame format. Since it's not cropping, you can shoot without reducing the pixel count and without vignetting. Please refer to the web for other specifications. I've used it a few times, but it has no noticeable scratches or stains, and it works perfectly. Retail price: ¥58,410 (tax included) - Brand: LAOWA - Model: Magic Format Converter - Mount Type: EF-E Mount - Accessories: Original box - Lens Diameter: Approximately 50mm Thank you for looking.