Digital photo albums, display methods thereof and controllers using the display methods are provided by the present invention so that a user can have a page-turning effect during switching digital photos. When the display is turned off in response to an operation performed by a user, the photographing information is prevented from being changed even if a button or a dial for changing a set value, such as a shutter speed or an aperture value, is operated. On the other hand, when the distribution density of the diode cathode region becomes high, it becomes hard for a PN junction at a collector part to turn ON and a snap back occurs. Detected first in the optical-black clamping is a level difference between the extracted first video signals. The accommodating intraocular lens has a longitudinal bisection axis and is initially disposed within the injector with the longitudinal bisection axis at an angle which is non-parallel and non-perpendicular to the injection axis.