In the past, in order to add bitmap files from Photoshop as title elements, I imported them using the Insert Logo function. (From the top menu bar Title>Logo>Insert Logo...)
The problem I noticed was that the graphics pixel aspect ratio was distorted and the image was fuzzy.
The correct way to import a large graphic is by using the Title Properties panel on the right side of the titler:
- Check the Background checkbox
- Check Texture checkbox
- Double-click in the Texture thumbnail.
- "Choose A Texture Image" file browser appears. Select your image and click Open. Your graphic is inserted.
Following these steps I found that the image was inserted cleanly and with the correct pixel aspect ratio.