2. Recommended uses and limitations
No one camera is ideal for every application and so there are some important limitations
of this camera. First here is an overview of what this camera is particularly good for.
Recommended uses of the AF51
Extra wide field of view afocal eyepiece projection
The AF51 is excellent for extra wide field of view imaging where you want to capture
everything an observer sees with their eye against the eyepiece as illustrated in figure 1.3.
This is in contrast to bare chip C-mount cameras which typically ‘crop’ the field of view to
a highly magnified limited central rectangular region. This is the case for the OptArc x10
WF eyepieces and many other types but with some extra-wide field eyepieces the circular
field will be cropped on top and bottom. These eyepieces therefore use more of the
available pixels of the camera for their image of the specimen at the expense of not seeing
the whole circular field of view. Details of how much of the camera sensor is used by the
the eyepiece field of view with various eyepieces is given in chapter 5.
Figure 2.1 The AF51 is recommended to be used with high eye point wide field of view eyepieces such as
the OptArc WF 10X/20 eyepiece shown in the figure. Its wide exit aperture and high eye relief allow the
AF51 to capture the whole visible field of view with minimal wastage of peripheral pixels (see figure 1.3 for
an example of this in use).
OptArc AF51 Camera Page 15 of 99 User Guide v1.02
