A .bay file format is a raw image format taken from Casio digital cameras. It is a proprietary raw image format and contains unprocessed data directly from camera’s image sesors. The data contained by it is also uncompressed. They typically store a higher level of image data and provide more flexibility for post-processing and editing compared to compressed image formats like JPEG.
How to open BAY file?
You can open BAY file using various image editing software applications e.g.
Adobe Camera Raw
Silkypix Developer Studio
How to convert a BAY file?
You can use Adobe Photoshop using a plugin Adobe Camera Raw (ACR) to convert BAY files to other formats.