Sewing machine and an embroidery frame

A sewing machine comprising:

• a mounting adaptor configured to be mounted with a embroidery frame, the embroidery frame including:
• a frame configured to hold a work cloth;
• an outer frame configured to be detachable outside in a radial direction of the frame and rotatably support the frame;
• and
• a driver configured to rotate the frame with respect to the outer frame;
• a memory configured to store frame rotation data, the frame rotation data indicating a setting angle, the setting angle being a predetermined rotation angle of the frame with respect to the outer frame;
• an imager configured to image an area including the embroidery frame mounted on the mounting adaptor;
• and
• a processor configured to control the sewing machine to:
• detect a marker provided on at least one of the embroidery frame and the work cloth based on the image;
• determine a rotation angle of the frame with respect to the outer frame based on the detected marker;
• and
• control the driver to adjust a rotation of the frame based on the determined rotation angle and the frame rotation data.