1.25 in IR850nm Infrared Pass Filter - Clear Infrared Transmission

In this review the 1.25 in IR850nm infrared pass filter is evaluated for photographers and hobbyists who need reliable near-infrared imaging. The bottom line: this simple, single-element filter is best for users wanting a straightforward way to capture IR light around 850nm without switching sensors or complex gear. Our review highlights how the filter performs in typical camera and optical accessory setups, and why its 6 month warranty and standard 1.25 in diameter make it a practical option for experimental infrared photography.

Key Features

• Infrared pass band: The filter is tuned to pass near-infrared light around 850nm, allowing enhanced contrast for IR imaging applications.
• Standard 1.25 in size: The 1.25 in diameter fits common accessory holders and eyepiece adapters for easy mounting and swapping on compatible optics.
• Single-piece construction: The straightforward design is compact and easy to handle for field use or laboratory tests without extra adapters.
• Brand backing: Offered under the FORKIS label with a 6 month warranty, providing short-term assurance against defects.
• Accessory compatibility: Works as a simple add-on filter for cameras, telescopes, and other imaging setups that accept 1.25 in filters.

Who It's For

This filter is aimed at photographers, amateur astronomers, and electronics hobbyists who want to experiment with near-infrared imaging without modifying their sensor or investing in specialized IR cameras. It suits users who already own gear that accepts 1.25 in accessories and who prioritize quick, low-cost testing of IR effects and contrast changes.

Those who need precise optical specifications, multi-element interference stacks, or long-term professional warranties should look elsewhere; the product is a basic IR pass filter intended for straightforward, exploratory use rather than precision scientific measurement.

Pros & Cons

Pros

• Effective near-infrared transmission around 850nm for clear IR imaging results in many setups.
• Standard 1.25 in diameter makes it easy to mount on a wide range of accessories and eyepieces.
• Simple, lightweight construction is convenient for field or casual lab use.
• Includes a 6 month warranty from the manufacturer, offering basic consumer protection.

Cons

• Limited specification detail is provided, so users needing exact transmission curves or optical tolerances may find it insufficient.
• Warranty is short compared with professional-grade optical components.

Specifications

Product name	1PCS New 1.25 in IR850nm Infrared Pass Filter
Wavelength	IR 850nm (near-infrared)
Diameter	1.25 in
Quantity	1 PCS
Brand	FORKIS
Warranty	6 months

Our Verdict

The 1.25 in IR850nm infrared pass filter is a compact, affordable tool for anyone experimenting with near-infrared photography or optics who already uses 1.25 in accessories. It delivers the expected IR pass behavior and convenience for casual use, and the included 6 month warranty adds basic protection. It is good value for hobbyists and educators, while professionals needing detailed optical data or extended coverage should consider higher-spec options.

Frequently Asked Questions

Will this fit my camera or telescope?
The filter has a 1.25 in diameter and is compatible with accessories and eyepiece holders that accept 1.25 in filters or adapters.

What wavelength does it pass?
The filter is designed to pass near-infrared light around 850nm for IR imaging applications.

Is there a warranty?
Yes, the product includes a 6 month warranty from the manufacturer.