3fr File extension 3fr is basically associated with an occupancy of Hasselblad devices used in the format of digital photography. The 3fr format is made up of the several Raw formats. It plays a similar role in digital systems as the negatives do in film photography. It comprises of aerial resolution of the digital photo along with meta-data. The raw image file like 3fr has a lot of benefits to a JPEG file, it has greater image attribute. All the transitions made on digital negatives are nondestructive. But its drawback is that its size is almost 2 to 6 times larger than JPEG file.
ico The .ICO filename extension refers to the ICON image file format originally developed by Microsoft. The extension is used to represent computer icon images of varying sizes designed for the operating system Microsoft Windows. Its use today has extended to developing icons for programs designed using the Microsoft developer's suite Visual Studio and other applications. Similar to other device independent bitmap file formats, the ICON file format is also in the raster graphics class of image formats where each individual pixel is part of an orthogonal dot matrix data structure with support for a limited palette of color information. As a resource file, the .ico file format has its strength in contextual use. This allows for multiple icon images of different color depth or size to be stored within the resource file and used when appropriate.