OPTEC Variable Length T-thread Adapter for NextGEN and Lepus Focal Reducer

Stock count is accurate & shown in real time.
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
Contiguous US / Lower 48:
Free shipping applies to orders over $50 using our chosen carrier/method. Faster paid options are available at checkout.
Alaska, Hawaii & US Territories:
Free shipping applies to many—but not all—products. Enter your ZIP code in cart or upon checkout to confirm options and costs.
International:
International orders do not qualify for free shipping. Shipping, duties, brokerage, tariffs, and taxes are the customer’s responsibility. Some items may be restricted due to export, size, or manufacturer limitations.
- Adjustable back-focus range from 25-42 mm (0.98-1.7 in)
- Fits Lepus and NextGEN OPTEC-2100 dovetail systems
- Engraved millimeter scale for fast repeatable setup
- Ideal for cameras, reducers, and custom imaging trains
OPTEC Variable Length T-Thread Camera Adapter
The Optec #19390 Variable Length T-Thread Camera Adapter is a versatile spacing solution designed to help dial in precise back-focus for Lepus and NextGEN imaging systems. Built for accessories using the OPTEC-2100 2.1-inch dovetail interface, this adjustable adapter provides a variable back-focus range from 25 mm to 42 mm (0.98 in to 1.7 in), making it ideal for matching cameras, reducers, and imaging trains that require accurate sensor spacing. An engraved millimeter scale allows quick, repeatable adjustments, helping simplify setup changes and optimize optical performance.
Specifications:
- Compatibility: Lepus and NextGEN systems using the OPTEC-2100 2.1-inch dovetail interface
- Camera Connection: T-thread (M42x0.75)
- Adjustable Back-Focus Range: 25-42 mm (0.98-1.7 in)
Other Information
- Country of Manufacture: United States
OPTEC Variable Length T-Thread Camera Adapter
The Optec #19390 Variable Length T-Thread Camera Adapter is a versatile spacing solution designed to help dial in precise back-focus for Lepus and NextGEN imaging systems. Built for accessories using the OPTEC-2100 2.1-inch dovetail interface, this adjustable adapter provides a variable back-focus range from 25 mm to 42 mm (0.98 in to 1.7 in), making it ideal for matching cameras, reducers, and imaging trains that require accurate sensor spacing. An engraved millimeter scale allows quick, repeatable adjustments, helping simplify setup changes and optimize optical performance.
Specifications:
- Compatibility: Lepus and NextGEN systems using the OPTEC-2100 2.1-inch dovetail interface
- Camera Connection: T-thread (M42x0.75)
- Adjustable Back-Focus Range: 25-42 mm (0.98-1.7 in)
- 1x Variable camera adapter
- 1x Locking ring
- Adjustable back-focus range from 25-42 mm (0.98-1.7 in)
- Fits Lepus and NextGEN OPTEC-2100 dovetail systems
- Engraved millimeter scale for fast repeatable setup
- Ideal for cameras, reducers, and custom imaging trains
OPTEC Variable Length T-Thread Camera Adapter
The Optec #19390 Variable Length T-Thread Camera Adapter is a versatile spacing solution designed to help dial in precise back-focus for Lepus and NextGEN imaging systems. Built for accessories using the OPTEC-2100 2.1-inch dovetail interface, this adjustable adapter provides a variable back-focus range from 25 mm to 42 mm (0.98 in to 1.7 in), making it ideal for matching cameras, reducers, and imaging trains that require accurate sensor spacing. An engraved millimeter scale allows quick, repeatable adjustments, helping simplify setup changes and optimize optical performance.
Specifications:
- Compatibility: Lepus and NextGEN systems using the OPTEC-2100 2.1-inch dovetail interface
- Camera Connection: T-thread (M42x0.75)
- Adjustable Back-Focus Range: 25-42 mm (0.98-1.7 in)
Other Information
- Country of Manufacture: United States
- 1x Variable camera adapter
- 1x Locking ring

OPTEC Variable Length T-thread Adapter for NextGEN and Lepus Focal Reducer
