This time my Pro's and Con's:
+ It fits properly on the Canon PowerShot G12
+ He latched well on the camera
+ It can be easily detached from the camera
+ Is equipped with different filters expanded at any time
+ Unlike the original, inexpensive
- Without shoe mount can make any reasonable photos with flash in the telephoto range, since the adapter throws a slight shadow on the bottom right of the screen.
Nevertheless, I would recommend the adapter at any time.