PowerShot G7 Camera User Guide Advanced
Page 143
... flash when shooting with these attachments. The wide converter changes the focal length of the camera body's lens by a factor of 0.75x (the thread diameter is 58 mm). Tele-converter TC-DC58C This lens is 58 mm). At other zoom settings, the image will come out relatively dark. Please use the... area of the recorded image (especially lower right corner) will appear as if its corners have been cut off. It is not possible to attach a lens hood or filter to the telephoto end.
... flash when shooting with these attachments. The wide converter changes the focal length of the camera body's lens by a factor of 0.75x (the thread diameter is 58 mm). Tele-converter TC-DC58C This lens is 58 mm). At other zoom settings, the image will come out relatively dark. Please use the... area of the recorded image (especially lower right corner) will appear as if its corners have been cut off. It is not possible to attach a lens hood or filter to the telephoto end.