4x6 canvas...from ARTCO All the backdrops are not in layers. Those are single images in high
resolution 2400x3000, at 300dpi. Technically if you converted them to
JPEG, those still should be ok, as there is only a slight difference.
TIFF is just a bit better than JPEG. However, both are fine.
The only issue can be if those did not get properly converted. You can
try IrfanView, a free viewer software that has the option of
converting file formats. It will open the TIFF and convert them into
JPEG or any other supported format. Check it out here http://www.irfanview.com/