I see this question is old, but I just recently had to present a Enhanced Metafile Format (emf) image in my report. I needed this to be able to zoom in the report without getting blurred images.
I found that the Report Viewer was actually able to render Enhanced Metafile Format. I just had to use a "legal" format extension. I.e. I simply renamed the .emf file to .png. This was however not working for EmfDual nor Emf+ formatted
files.
The emf image was displayed correctly in Report Viewer and also in the word report exported from the Report Viewer. In the word report I could zoom in on the image without it becoming blurred.
br
Jetmund