With so many options, it can be a tough decision to choose a scope. Discovery make it simple to find the right optics for you…
When choosing a scope you have a choice of objective lens size and tube diameters. The size of the objective lens can vary between sub 28 mm to 60 mm. Large objective lens will transfer more light to your eye, but will require larger, heavier tubes and higher mounts.
Large lenses may offer an advantage in low light or at long range at high magnification, but smaller lenses give a more compact design and are adequate for lower magnifications. Tube sizes are most common in 1 inch, 30 mm and 34 mm diameters.
There is very little advantage to the light transmitted through the different sizes, and larger tubes main advantage is the space for greater adjustment mechanism and more shock resilient parts.
You will hear about glass quality being the main difference between low and high price scope. The lens quality will greatly effect light transmission and sharpness of focus.
All Discovery scopes offer lens quality far above expectation for the price range. All lenses are Fully Multi Coated (FMC) to give bright colour, edge to edge sharp images, in all light conditions.
Additionally some models use Lanthanum glass is used in many high end optical instruments as it offers better light transmission and many advantages similar to ED glass, these are fitted to the Discovery HS 4-14×44 and HI FFP scopes.
You will also hear about ED glass lenses. ED means Extra-low Dispersion and refers to the composition and optical properties of the glass used for the lenses.
Using specially formulated rare-earth compounds these lenses greatly reduce chromatic aberration (colours not all coming to focus in the same focal plane) to give sharper, better colour, images.
Discovery ED range uses Japanese FCD100 HOYA glass lenses that provide extremely low chromatic dispersion and a bright, sharp image.
You can come and see all the Discovery range of scopes and accessories in the main hall of the Northern Shooting Show.