Image acquisition in a TEM requires the conversion of the electron image into a photon image and the acquisition of this photon image with an imaging device. There are two principal techniques to do so: a fiber-coupled camera and a lens-coupled camera. Both have advantages and disadvantages. Please be aware that we (Soft Imaging System Corp) produce both types of cameras. There are also two principle camera positions on a TEM, and the choice of position must be taken into account for any decision. The positions are: side-mount (camera mounted on 35mm port above the viewing chamber), and bottom-mount (also known as on-axis mount, camera mounted below the viewing chamber).