Image recording and 3d information acquisition

A computer program product comprising program code stored on a non-transitory computer readable medium for performing a method, when run on a computer, comprising:

• acquiring at least a first image and a second image of an object using a lens and a sensor;
• during the acquiring of each of the at least first and second images, conducting one or more focal sweeps, each of the one or more focal sweeps corresponding to a change in distance between the lens and the sensor, over a focal sweep range;
• differently modulating exposure intensity as a function of time during the one or more focal sweeps for each of the at least first and second images;
• and
• recording the acquired at least first and second images of the object.

A camera system comprising:

• a lens and a sensor used to acquire at least a first image and a second image of an object;
• means to conduct one or more focal sweeps, each corresponding to a change in distance between the lens and the sensor, during the acquisition of each of the at least first and second images;
• means to modulate the exposure intensity during the one or more focal sweeps as a function of time for each of the at least first and second images;
• and
• a storage medium to record the acquired at least first and second images of the object.