Instructions
In every lens listing on lens-reviews.com you will now find
a copy of the field of view (FOV) tool.
The Virtual Camera Back will automatically be adjusted to
allow you to see the field of view of the lens you are reading about. The area inside the dotted box represents
your field of view. You can drag the
box around with your mouse if you wish.
The default view is full frame, and I am sure that most of
us are not lucky enough to have a full frame DSLR. The first thing you need to
do is tell the tool the focal length multiplication factor (or crop factor) of
your camera.
You can do this by either clicking on the crop factor
buttons, if you know your crop factor.
Alternatively you can select from a selection of common DSLR bodies from
the main manufacturers in the "Choose Camera" drop down.
For Zoom lenses the left hand end of the focal length slider
will be set to the lens widest angle.
The right hand end of the slider will be set to the narrowest
angle. To see the relative field of view
of the lens at any particular focal length drag the slider to your required
focal length.
For prime (fixed focal length) lenses the slider is fixed,
and will automatically show you the correct field of view of your selected
lens. The focal length slider will be
disabled.
