(AO) Adjustable Objective: The front objective lens is adjustable so you will always be able to keep
perfect focus when using a variable power rifle scope.
(E) Illuminated: The rifle scope has an illuminated reticle very good for low light conditions.
Exit Pupil: This is the amount of
light that leaves or emits from the rear of the rifle scope tube towards your eye.
Eye Relief: Is the distance your
eye will be from the end of the rifle scope while you still have a full view
through the scope.
Fixed: A scope that is fixed means
simply that it is a single power scope of fixed magnification.
(FOV): Field of
View. Quality Optics offer a good field of view. This is what your view
is when looking through the rifle scope. Normally when looking at specifications
of a rifle scope FOV is stated as to how many feet of width you will be
able to see when the object or target is a 100 yards away. If you have a
high power/high magnification rifle scope then the field of view is reduced
because the target at 100 yards is now apparently a lot closer meaning you
can now only see part of the target... (up close and personal) So in short:
FOV is reduced when magnification is increased.
Lens Coating: Fully multi coated optics are best. The coatings are applied to the rifle
scope lenses to minimize reflection and to enhance light transmission.
Objective Lens: This is the lens at the front of your rifle scope. The larger the objective
lens the more light it will let into your scope. So in poor light conditions
the larger the lens the better.
Ocular Lens: The ocular lens is the lens nearest to your eye.Power:This is the amount of magnification
over and above our normal eyesight. Normal eyesight is expressed as 1 times
magnification. So if we are looking at a scope that is 6 times magnification
then the object we are looking at will appear 6 times larger than our normal
sight
Red Dot: A Red Dot rifle scope also used on bows shot guns and pistols has a red
dot which is projected on to the front lens. This dot when aligned with the
target is the impact point. (This is not a laser sighting device.) The dot
is held within the scope and does not project out of the scope.
Reticle: Best described as the cross
hairs for target centering and can come in many different forms e.g. Mill
Dot, 30/30, NATO etc.Variable: Meaning the magnification
of the rifle scope can be changed.
What the numbers mean: Example (1) 3-9x40AOE means, it is a 3 to 9 times magnification variable power
rifle scope. With a 40mm Adjustable Objective(front) Lens.With an illuminated
reticle. Example (2) 4x30 means 4 times fixed magnification rifle scope with
a 30mmm objective lens.
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