sloped first channel accommodating the first extension the first channel having a first stop point and a second stop point wherein the frame moves between the first stop point and the second stop point which correspond to first and second distances between the optical element and the image sensor respectively application_number US 6460105 A description fig1 is a view of a camera module having a macro focus feature according to one aspect of the present disclosure camera module 100 may include lens barrel 200 lens mount 300 and macro ring 400 lens barrel 200 may be secured to macro ring 400 and macro ring 400 may be movably attached to lens mount 300 fig2 a and 2b are views of a lens barrel according to one aspect of the present disclosure lens barrel 200 may include lens barrel threads 202 section 204 of lens barrel 200 may be partially flat and may provide for axial self aligning lens barrel 200 to macro ring 400 opening 206 may permit light to pass to lens not shown located within lens barrel 200 raised portion 208 may be a shape such as an hexagon and may be used as a contact point used to move lens barrel 200 for example during assembly and calibration fig3 a 3b and 3 c are views of a lens mount according to one aspect of the present disclosure lens mount 300 may include one or more sloped channels 302 channel 302.