免费在线 PEF 转 G4 转换器

This format is used to create RAW photos on Pentax cameras. It stores the full set of data obtained by the camera's sensors during a shoot. It allows you to fine-tune lighting, shadow, and exposure parameters while retaining all the details and the original quality of the photo.

G4 is a method to compress black and white images without losing quality. It is used for fax machines and as a one of the compression types for the TIFF format. G4 treats a picture as black dots and lines on a white page (less file size will be achieved if there are less black dots and lines).