Lens Housing:

All Shrewd lenses come encased in an aluminum housing that serves a number of important purposes.

• Protection: The aluminum housing adds a level of protection to the expensive glass not found on other scopes.
• Ease of use: The housing threads directly into the target side of the Optum scope, enabling archers to easily install and remove their lens for cleaning or storage.
• Accuracy: A single lead thread on the housing means any time the lens is removed and reinstalled it will always end up in the same place.
• Customization: All Shrewd lens housings are threaded on the target side to accept 40mm Optum sunshades in order to reduce glare and further protect your lens.
• In order to install a lens on the Optum you must have a Shrewd lens housing but that’s not to say you can’t use your own lens. Empty lens housings are available and enable archers to use their own lenses as long as the glass is the correct size (1.75″ diameter).

Lens Options:

Shrewd offers two different lenses for the Optum scope, the Feather Vision Verde Vitri and the Feather Vision Verde Plus. There are a number of similarities and differences that can create some confusion when it comes time to decide which lens is right for you. We’ve done our best to break down the important aspects of each lens below to make the decision easier.

1. Lens material and quality:

• Verde Vitri: Optical quality glass lens made by Zeiss with a convex curve on the surface.
• Verde Plus: Optical quality glass lens made by Zeiss with a convex curve on the surface.

2. Lens coating:

• Verde Vitri: Zeiss anti-glare coating with 99.98% light transmission.
• Verde Plus: Zeiss anti-glare coating with more layers than the Verde Vitri which enables it to block a wider spectrum of light. Features anti-static, oleo phobic, and scratch resistant properties. Allows 99.98% light transmission.

3. Magnification options:

• Verde Vitri: Available in 2x, 3x, 4x, 5x, 6x, 7x, and 8x magnification powers.
• Verde Plus: Available in 4x, 5x, and 6x magnification powers.

Compatibility:

The Optum features an all new lens housing with a unique thread size and pitch. This means anyone wishing to run a lens on their Optum scope must have the Shrewd lens housing specifically made for the Optum. For those who have lenses for the NOMAD scope there is an adapter available that enables the use of NOMAD lenses on the Optum scope. Just keep in mind that only NOMAD sunshades will thread into the NOMAD lens housing. For anyone who already has a lens but no housing there is also an empty lens housing for the Optum available that accommodates any glass 1.75″ in diameter.

There is only one size lens housing for the Optum scope and it fits both the 35mm and 40mm. The 40mm Optum does allow the lens to be threaded into either side of the scope body whereas the 35mm Optum is limited to the target side of the scope.