Camera with internal polarizing filter

A camera comprising:

• a camera housing;
• a lens coupled to the camera housing;
• an image sensor in selective communication with the lens;
• a polarizing filter operatively coupled to the image sensor and having a polarization axis, the polarizing filter configured to be manually rotated without use of actuators;
• a rotation angle sensor to sense a rotation angle of the polarizing filter as the polarizing filter is manually rotated;
• a processor operatively coupled to the image sensor and the rotation angle sensor, the processor configured to execute image analysis processing software to analyze reflection suppression metric values based on output from the rotation angle sensor acquired while the polarizing filter is manually rotated to identify a preferred rotation angle of the polarizing filter;
• and
• a display mechanism operatively coupled to the processor and configured to provide feedback regarding the rotation angle of the polarizing filter and the identified preferred polarization rotation angle to enable manual rotation of the polarizing filter to the identified preferred rotation angle.