JeffreyDurham--The following is strictly guessing.
I have a few .tif files on my PC and no .tiff files. But in Windows|Tools|Folder Options I have both file types listed. TIF is called File. TIFF is called Image.
See tif-tiff screenshot below. The implication is that if I were to click Restore I would associate tif with WPFV. If your Folder Options is set up similarly try it.
The other screenshot below is tiff and shows the "Application used to perform action" to OPEN tiff. This screenshot comes from the Click Advanced|Open|Edit window. But since I have no tiff files I could not try it. The full line "Application used to perform action" reads
rundll32.exe C:\WINDOWS\system32\shimgvw.dll,ImageView_Fullscreen %1
You could use this for tif, also. Click Advanced|Open|Edit and fill the boxes in appropriately. In fact I suspect tif is set up to open in WPFV on my PC in spite of what the first image says. If I click a tif file it opens in WPFV--not IE.