Using Other Raster Image Formats
Concept Procedure

Use this feature to connect to raster image formats that are not supported by Data Connect, or to specify correlation information for images that do not contain this information within their files. Images attached using the following methods support a limited set of styles.

NoteTo use this technique to insert some raster image formats, such as ECW and SID, you must first download the free Raster Object Enabler from
NoteIf the image you are inserting is supported, connect to it and add it to your map using Data Connect. This gives you more control over styling and other options.