Images: 5 seconds
Titles: 5 seconds
Transitions: 0.5 seconds
However, when I insert images or titles, they are 5:05 long, so I then have to manually take off 5 frames. Similarly, when I add transitions they are 0:10 long instead of 12/13 (the project is 25fps). I rely on these default settings a lot (especially for transitions) so its really anoying to have to manually fix them every time.