Best C-Mount Lens Extension Tubes of 2025

Kenneth Collin Avatar
Kenneth Collin
Last Updated: 1 Feb 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

C-Mount Lens Extension Tubes are a versatile accessory for photographers and videographers looking to expand their lens capabilities. These tubes allow for the extension of the distance between the camera and lens, which can result in increased magnification and closer focusing distances. They come in a range of sizes and can be combined to achieve various lengths, providing flexibility and adaptability to different shooting scenarios. These extension tubes are a cost-effective alternative to purchasing additional lenses and can be used with a variety of C-mount compatible lenses.

At a Glance: Our Top Picks

C to CS-Mount Camera Lens Adapter Ring Cover #TOP 1
C to CS-Mount Camera Lens Adapter Ring
ftb score rating icon 9.8
VILTROX DG-C Macro Extension Tube Set Cover #TOP 2
VILTROX DG-C Macro Extension Tube Set
ftb score rating icon 9.7
5mm C-CS C-Mount Adapter for CCTV Cameras Cover #TOP 3
5mm C-CS C-Mount Adapter for CCTV Cameras
ftb score rating icon 9.5

Top 5 C-Mount Lens Extension Tubes

#TOP 1

C to CS-Mount Camera Lens Adapter Ring

C-CS-5mm*5
5mm*5
C to CS-Mount Camera Lens Adapter Ring Cover
5pcs 5mm C-CS C-Mount Camera Lens Adapter Ring C to CS Extension Tube for CCTV Security Cameras

The Kamthing Lens Adapter is designed for CCTV security cameras, allowing you to convert a C-Mount lens for use on CS-Mount cameras. This flexibility is ideal for enhancing your surveillance capabilities. It offers a range of adapter ring sizes from 0.5mm to 100mm, enabling you to select the perfect fit for your specific lens. Made from matte aluminium, it ensures durability and a professional appearance. With an external diameter of 31mm and an internal diameter of 24.5mm, this adapter ring is easy to install and use.

What We Like
Compatible with various CCTV cameras
Multiple adapter ring sizes available
Durable matte aluminium construction
Easy installation and use

VILTROX DG-C Macro Extension Tube Set

DG-C
VILTROX DG-C Macro Extension Tube Set Cover
VILTROX DG-C Metal Mount Auto Focus Macro Extension Tube Set Adapter Ring (12mm+20mm+36mm Tubes) for Canon EF EF-S Lens DSLR Camera 760D 700D 80D 70D 5DII 5DIII 5D4 6D 7D 80D 90D 200D

The VILTROX Macro Extension Tubes are designed specifically for Canon EF and EF-S mount cameras, enhancing your macro photography capabilities. With metal bayonets and gilt contacts, these tubes ensure perfect coupling for reliable auto focus. You will appreciate the full auto focus and auto TTL exposure functionality, which allows seamless communication between your lens and camera. The set includes three extension tubes (12mm, 20mm, and 36mm) that can be used individually or in combination, enabling you to achieve stunning close-up shots effortlessly.

What We Like
Compatible with various Canon models
High-quality materials used
Multiple tube combinations available
Maintains original lens quality
Full auto focus support
#TOP 3

5mm C-CS C-Mount Adapter for CCTV Cameras

EpheyFIF
1112252431
10 Pcs
5mm C-CS C-Mount Adapter for CCTV Cameras Cover
5mm C-CS C-Mount Camera Lens Adapter Ring C to CS Extension Tube for CCTV Security Cameras(10 pcs)

The CCTV Lens Adapter Ring is designed for all types of CCTV security cameras, providing seamless compatibility. With a 31mm outer diameter and 25.4mm inner diameter, this 5mm thick adapter is made from durable aluminium, ensuring longevity. Its versatile application is ideal for video surveillance and industrial vision, making it essential when precise back focus is needed. This adapter facilitates interface conversion, allowing you to achieve optimal image quality and consistent performance in your security camera setup.

What We Like
Durable aluminium construction
Ideal for video surveillance
Ensures precise back focus
Compatible with various CCTV cameras
Facilitates interface conversion
#TOP 4

Kenko 89997 DG Nikon Macro Extension Tubes

089997
Black
12/20/36mm
Kenko 89997 DG Nikon Macro Extension Tubes Cover
Kenko 89997 DG Nikon Extension Tube Set 36 mm Black

The Kenko Nikon Extension Tubes are an excellent addition for those interested in macro photography. These tubes allow you to transform a standard lens into a macro lens, enabling you to capture intricate details in your subjects. With three different lengths of 12mm, 20mm, and 36mm, you can choose the ideal tube for your specific needs. Designed for Nikon F mounts and compatible with both APS-C and Full Frame sensors, these tubes provide versatility for various photography styles.

What We Like
Transforms regular lenses into macro lenses
Includes three tube lengths
Compatible with Nikon F mounts
Made in Japan for quality
#TOP 5

Cuifati Auto Focus Macro Extension Tube Set

Cuifati5io3mec1za-01
MK-C-AF1-A
Cuifati Auto Focus Macro Extension Tube Set Cover
Auto Focus Macro Extension Tube Set,13mm / 21mm / 31mm Adjustable 3-Ring Auto Focus Macro Extension Tube Adapter Ring for EF/EF-S Mount DSLR (MK-C-AF1-A)

The Cuifati Macro Extension Tubes are crafted from high-quality metal, ensuring that they are both lightweight and durable for long-lasting use. These tubes allow you to decrease the lens length for close-up shots without compromising image quality. With three adjustable rings (13mm, 21mm, and 31mm), you can use them individually or in combination to achieve varying levels of magnification for your photography. They fit securely onto your camera and feature copper conductors to support auto focusing, making them a fantastic accessory for photography enthusiasts.

What We Like
High-quality metal construction
Maintains image quality
Adjustable for different magnifications
Supports auto focusing
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Which lens is best for extension tubes?

Extension tubes are most effective when used with lenses of focal lengths between 24-100mm. They are not so effective when used with telephoto lenses (for these, use a close-up lens). You can't use an extension tube with some wide-angle lenses as it becomes impossible to focus with it fitted.

2. Do lens adapters work as extension tubes?

EXTENSION TUBES (see below): Now an 'Tele-Extender' or 'Extension Tube' is very similar to the Lens Adapter (see above image) in that it's an empty tube. It is designed to ALTER the Minimum Focus Distance from the lens to the subject....Does EF lens adapter have the same effect as an extension tube?

3. Can I use an extension tube with a zoom lens?

Extension tubes can be used with long telephoto zoom lenses. This type of set-up tends to give photographers more latitude when photographing subjects that are a few feet away from them, for example bees or butterflies that are a few feet inside a bed of flowers rather than on the periphery.

4. What is the difference between C mount and CS-mount lens?

The difference between C mount and CS mount is flange focal length that from lens mount to image plate. 5 mm CS mount adapter ring is required when C mount lens attaching to CS mount lens camera. CS mount lens cannot use for C mount lens due to the focal length difference and cannot get focus image.

Editor's Notes

During our c-mount lens extension tube research, we found 18 c-mount lens extension tube products and shortlisted 5 quality products. We collected and analyzed 10,537 customer reviews through our big data system to write the c-mount lens extension tubes list. We found that most customers choose c-mount lens extension tubes with an average price of £31.75.

The c-mount lens extension tubes are available for purchase. We have researched hundreds of brands and picked the top brands of c-mount lens extension tubes, including Kamthing, VILTROX, EpheyFIF, Kenko, Cuifati. The seller of top 1 product has received honest feedback from 33 consumers with an average rating of 4.7.

Written by
Kenneth Collin Avatar

Kenneth Collin graduated from Imperial College, London, at 22. He is a UX/UI designer, a web developer, and a writer, amongst others. At age 14, Kenneth programmed his first app. Kenneth's app served as a remote control for censored devices. "When I was 8, I would pick up scraps from electronics and try to rebuild or at least fix them," Kenneth said in one of his recent articles on Home repairs for top gadgets.