If I remember correctly the focus sensor is on the bottom of the mirror box, within the mirror unit a second mirror aims some of the reflected light heading to the eyepiece downward. So could the secondary mirror not be coming down when the shutter release is pressed? Is the viewfinder image visible in case the main mirror is getting stuck.
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If I remember correctly the focus sensor is on the bottom of the mirror box, within the mirror unit a second mirror aims some of the reflected light heading to the eyepiece downward. So could the secondary mirror not be coming back down when the shutter release is pressed? Is the viewfinder image visible in case the main mirror is getting stuck.
If I remember correctly the focus sensor is on the bottom of the mirror box, within the mirror unit a second mirror aims some of the reflected light heading to the eyepiece downward. So could the secondary mirror not be coming down when the shutter release is pressed? Is the viewfinder image visible in case the main mirror is getting stuck.