50mm 20MP 1.1-Inch C-Mount FA Machine Vision Lens

Who Is This 50mm Machine Vision Lens Designed For?

This lens is intended for machine vision system integrators, automation equipment manufacturers and factory vision engineers who need a narrow-to-medium field of view, a longer installation distance and reliable imaging on a high-resolution C-mount camera.

It is a practical candidate when the project requires:

• A 50mm focal length for a smaller inspection area or longer working distance
• Compatibility with 1.1-inch or smaller industrial camera sensors
• A large 4/3-inch image circle for sensor coverage margin
• Manual focus and iris settings that can be locked after commissioning
• Low distortion for inspection, positioning, OCR and surface analysis

Why Use a 50mm Machine Vision Lens?

Compared with a shorter focal length lens, a 50mm lens provides a narrower field angle at the same sensor size and working distance. This allows a smaller inspection area to occupy more camera pixels and can create additional space for lighting, fixtures and mechanical parts.

• Suitable for medium-to-small fields of view
• Useful when the camera must be installed farther from the object
• Helps enlarge smaller features within the captured image
• Supports visible and near-infrared imaging from 420-1000nm

For a wider field of view, compare the 35mm C-mount FA lens . For a narrower field or longer installation distance, review the 75mm C-mount machine vision lens .

Sensor Format and Image-Circle Compatibility

The specification lists a 4/3-inch image circle, while the 20MP rating refers specifically to 1.1-inch cameras. A larger image circle can help reduce the risk of incomplete sensor coverage, but final edge resolution and illumination should still be verified with the exact camera model.

Lockable Focus and Iris for Stable Installation

Focus Lock Screw

Helps maintain the selected focus position after image setup.

Iris Lock Screw

Reduces unintended aperture changes during equipment use or maintenance.

C-Mount Interface

Designed for standard C-mount machine vision cameras.

Typical Machine Vision Applications

The lens is suitable for inspection tasks where a 50mm focal length, high-resolution camera support and stable manual settings are more important than telecentric magnification.

When This Lens Is a Good Fit

• Your camera uses a C-mount interface
• Your camera sensor is 1.1 inch or smaller
• You require a 50mm focal length and a narrower field of view
• Your system can use manual focus and iris settings
• Your application involves inspection, OCR, positioning or surface imaging
• Your working distance is at least approximately 0.3m

When to Consider Another Optical Solution

• A shorter working distance or much wider field of view is required
• Motorized focus, autofocus or automatic iris control is required
• Object height variation must not change image magnification
• The project requires very tight dimensional measurement tolerances
• The exact camera requires edge performance beyond the verified 1.1-inch 20MP rating

Information Required for Lens Selection

Manufacturer-Direct Optical and Application Support

POMEAS supports machine vision projects through lens selection, camera compatibility review, sample evaluation, quality inspection and repeat-order communication. This helps customers assess the complete imaging setup rather than selecting a lens by focal length or megapixel rating alone.

• Direct communication for camera, field-of-view and working-distance matching
• Application review before quotation or sample approval
• Quality inspection and consistency checks before delivery
• Support for repeat orders and automation equipment projects

Frequently Asked Questions

What is the difference between a 50mm and a 35mm machine vision lens?

At the same working distance and sensor size, the 50mm lens provides a narrower field of view and higher image magnification. It may also allow the camera to be installed farther from the object for a similar field of view.

Can this lens be used with a 4/3-inch camera?

The datasheet lists a 4/3-inch image circle. However, the 20MP statement specifically refers to 1.1-inch cameras, so full-frame edge resolution on a high-resolution 4/3-inch sensor should be confirmed with the exact camera.

Can the focus and iris be locked?

Yes. Separate focus and iris locking screws help maintain the selected settings after setup.

Is this lens suitable for dimensional measurement?

It can support general inspection and calibrated measurement tasks, but it is not telecentric. A telecentric lens is generally safer for tight dimensional tolerances or objects with height variation.

What information should be provided before ordering?

Provide the camera model, sensor size, pixel size, field of view, working distance, smallest feature, accuracy requirement, lighting and available installation space.

Related Machine Vision Lens Options

• Browse machine vision lenses and imaging components
• Compare a 50mm lens for 2/3-inch cameras
• Compare a wider 35mm C-mount FA lens
• Compare a longer 75mm C-mount FA lens

Request Lens Selection Support

Send POMEAS your camera model, required field of view, working distance and inspection target. The optical and application team can help confirm whether the PMS-LFHHG-5020M(B) provides the required image coverage, detail and installation distance before quotation.