<p>Glenn,<br>
Your second picture was posted in portrait format, therefore the 'mark' has moved through ninety degrees. As has been suggested, it is nothing to do with the lens (and many hobbyist photographers have more than one lens) - it is a hair or other foreign matter on the sensor of the camera. To have it removed, take the camera to your nearest reliable professional repair facility and let them clean it for you - then everything will be fine.<br>
BTW, as this exchange represents a divergence from the subject matter of the original post, it may have been better to start a new thread for it. Maybe the moderators could do that for you.</p>
<p>Tony</p>