Nikon bids farewell to focus drift

This now offers drift-free imaging of live cells by eliminating variables such as thermal change or those caused by the microscope itself. Now, consistent focus can be maintained for observations of days or more by simply focusing on the desired plane and then turning on the PFS function.

Stable in-focus observations over an extended period of time are possible with the TE2000-PFS, as it automatically detects the surface of the coverslip optically and continually corrects the focus to compensate for even the most infinitesimal change. This means that the user no longer has to adjust the focus each time stage movement occurs, or after adding reagents. As focus adjustment is no longer necessary, photobleaching is also minimised; thus, cells can be kept alive for longer during fluorescence imaging. NikonÆs PFS is compatible with a wide range of observation methods, from brightfield and fluorescence microscopy to DIC, phase contrast and others.