If your organization has enabled pictures, you can choose whether to display a picture as part of your presence information, and if you do display a picture, whether to use your default picture or another one that you choose.
From the Microsoft Lync main window, you can open the My Picture options in one of two ways:
You can hide your picture from other Microsoft Lync 2010 users. Your contacts will see a blank representation instead of your picture.
By default, Lync 2010 displays your picture from the corporate directory. If you have changed your picture, you can change it back to your corporate picture.
You can specify a different picture to appear to people in your company and contacts federated with your company. The photo must be located on a website that is publicly available.
You can revert to your previous picture in the My Picture options.