One of the least used custom function choices on the X100 may be the last item on the SET-UP Menu. On Page 6 of 6 the last selection allows you turn on the extra frame you will see when using the OVF. This shows the AF parallax adjustment depending on your focus distance. This is different than the outline box showing the total frame. This is handy especially when shooting closer subjects. See what you think - you may like it and enjoy having the OVF information. The beauty of the X100 is that you have little excuse to carry it everywhere.All shots here are at ISO 800.