Camera

A camera, comprising:

• an optical element that moves between a first focus position and a second focus position upon application of an electrical signal;
• a sensor both to capture first images transmitted by the optical element in the first focus position and to capture second images transmitted by the optical element in the second focus position;
• a processor to control a timing of an application of the electrical signal to the optical element to regulate a rate of change of the optical element between the first focus position and the second focus position, o synchronize capture by the sensor of first images transmitted by the optical element in the first focus position, to synchronize capture by the sensor of second images transmitted by the optical element in the second focus position, and to control streaming of a most recent first image and a most recent second image for simultaneous viewing.

A non-volatile storage medium including instruction that, when executed by a processor, cause the processor to:

• control a timing of an application of an electrical signal to an optical element to alternately change a focus of the optical element between a first focus position and a second focus position;
• control a streaming to a screen of a most recent image transmitted by the optical element and captured by a sensor;
• control a streaming to the screen of a most recent second image transmitted by the optical element and captured by the sensor so that the most recent first and second images are simultaneously displayed.