Convert erf to sk1

What is the difference between .erf and .sk1?

Description: This format was created to store images in RAW format that were created using Epson digital cameras. The image is stored in an uncompressed form, and it can be directly printed on Epson printers. This format can be edited using the Epson PhotoRAW software or using plug-ins in other image editors.; An SK1 vector graphic file is a file format primarily used by the sK1 illustration program, which focuses on providing professional-quality design features for prepress processing. Unlike other vector formats, the SK1 file format is unique for its support of CMYK color, which is crucial for color accuracy in printing. It also includes advanced features such as color profiles and spot colors, making it particularly suitable for tasks that require precise color matching and high-quality print outputs.