Free Online MEF to HEIF Converter

The format was developed by Mamiya for use in its own cameras. It is mainly used to store photos in uncompressed form for further processing without loss of quality. It was created on the basis of the RAW-file principle. It contains a complete set of information that was obtained from the camera lens.

HEIF is a container that can be a single image or a sequence of images which makes it ideal for Apple's Live Photos. It is based on HEVC (High Efficiency Video Coding). The format is more convenient than the old JPEG mostly because it is twice smaller despite the fact that is has excellent quality. Therefore you can storage more images on your Apple device which is great. HEIF was developed in 2013 by MPEG (Moving Picture Experts Group) but has become popular only when Apple decided to replace JPEG with it in 2017. However, not so many programs are able to open it which is why you might need to convert it to another format.