Who wants to use the camera as we while diving, will be disappointed, since the case has two significant disadvantages in our opinion:
1. lift
Additional weight (Canon accessories or external flash arm) is absolutely necessary, without the camera to handle diving barely.
2. Built-in flash
The biggest shortcoming is in our opinion in the housing construction and thus completely inadequate use possibility of built-in flash. The long version for the inclusion of the objective of the largest part of the subject in the dark remains (see example images). As any diver knows, reduces the color spectrum with increasing depth, so that as of 3 m the use of an external light source is required to capture the colors underwater. The housing offered by CANON for our opinion is completely inappropriate.
There were not these problems CANON housing for the IXUS90.
Here the examiner has only one additional external light source (diving lamp or external flash).
So who is faced with the decision to buy a G12 with underwater housing to hold his diving experiences, should still take into account in its calculation the additional cost of an external underwater flash with.
Furthermore, it is recommended to install a sunshade for the display, as little can be seen in very sunny light on the display.