EXT-CD - Lens Vello - Free user manual and instructions

Product Type	Extension Tube for Macro Photography
Model	EXT-CD
Brand	Vello
Compatibility	Canon EF / EF-S Mount Lenses
Extension Length	12 mm
Construction	Precision-machined Aluminum Alloy
Weight	Approx. 30 g
Dimensions (Diameter x Length)	Approx. 67 x 12 mm
Autofocus Support	Yes (pass-through electronic contacts)
Aperture Control	Electronic coupling maintains full communication
Primary Function	Enables closer focusing distances for macro effect
Mount Compatibility	Canon EF / EF-S (rear mount) and lens side
Filter Thread	No filter thread (attaches between lens and camera)
Maintenance	Clean with soft, dry cloth; avoid solvents
Storage	Keep in dry, dust-free environment
Included Accessories	Rear cap, front cap (if compatible)
Warranty	Limited manufacturer warranty

Frequently Asked Questions - EXT-CD Vello

What is the Vello EXT-CD extension tube used for?

The Vello EXT-CD is an extension tube designed for macro photography. It allows you to focus closer to your subject, increasing magnification without the need for a dedicated macro lens.

Is the EXT-CD compatible with my camera and lens?

This model is compatible with Canon EF and EF-S mount cameras and lenses. It maintains full electronic communication, so autofocus and aperture control work as normal.

Does the extension tube affect image quality?

Extension tubes do not contain any optical elements, so they do not degrade image quality. However, using them may cause light loss due to increased distance from the sensor.

How do I attach the EXT-CD tube?

Simply mount the tube between your camera body and lens: attach the tube to the camera first, then mount your lens onto the tube. Ensure alignment of the mounting dots.

Will autofocus still work with the extension tube?

Yes, the Vello EXT-CD has electronic pass-through contacts that maintain autofocus functionality. However, autofocus may be slower in low light.

Can I stack multiple extension tubes?

Yes, you can stack multiple Vello extension tubes for greater magnification. Ensure each tube has electronic contacts for continued communication.

What is the minimum focusing distance with the EXT-CD?

The minimum focusing distance will vary depending on the lens used. Generally, a 12mm tube allows you to focus much closer than without it, enabling true macro photography.

How do I clean the extension tube?

Use a soft, dry cloth to gently wipe the tube. Avoid using liquid cleaners or abrasive materials. Keep the electronic contacts clean and dry.

Is the EXT-CD compatible with third-party lenses?

It is designed for Canon EF/EF-S lenses. Third-party lenses with Canon EF mount should work, but compatibility may vary. Check your lens specifications.

Does the tube include any glass elements?

No, the Vello EXT-CD is a hollow tube without any glass elements. It simply increases the distance between the lens and the sensor for macro effects.

USER MANUAL EXT-CD Vello

AF EXTENSION TUBE SET

USER MANUAL

Close-up of a black digital camera with visible lens and mounting brackets (no text or symbols)

VELLO

THANK YOU FOR CHOOSING VELLO

The Vello Extension Tube Kit provides a practical way of adding macro performance to your camera setup. The Vello Extension tubes can be attached to a variety of lenses for different effects and are less expensive than dedicated macro lenses. The extension tubes can be stacked in several combinations, allowing for greater control of the level of magnification.

PRECAUTIONS

• Using an extension tube provides extremely close focus for your lens, but you will not be able to focus to infinity while the extension tube is attached to your lens.
• The amount of transmitted light is reduced when using an extension tube. The light is reduced more when multiple extension tubes are used together. This reduction in transmitted light can affect the camera's ability to auto focus. Manual focusing is recommended if the lens begins to hunt for a focus point.
• Images are for illustrative purposes only.
• Please read this instruction manual before using the product.

MOUNTING THE EXTENSION TUBES

1. Line up the alignment marks on the tube and your camera.

Close-up of hands adjusting a camera lens with a yellow directional arrow indicating rotation (no text or symbols visible)

1. Line up the alignment marks on your lens and the tube.

Close-up of a black DSLR camera with a hand adjusting its lens, showing a yellow curved arrow indicating rotation (no text or symbols visible)

REMOVING THE EXTENSION TUBES

Close-up of hands using a black camera lens to adjust the lens area with yellow directional arrows (no text or symbols visible)

Close-up of a hand adjusting a black cylindrical object with yellow arrows indicating rotation or adjustment (no text or symbols visible)

TIPS FOR USING THE VELLO EXTENSION TUBES

• As with all macro photography, images will have a very shallow depth of field. To increase the depth of field, select a smaller aperture.
• Due to increased exposure times, a tripod and cable release or remote control are always recommended for macro photography.
• Closer focusing can be achieved by using the larger extension tubes or by stacking the tubes.

• Due to the increased distance between the lens and the sensor, the camera's TTL system may not always be accurate. Use a manual exposure mode if this happens.

• At extremely close distances, focus may be difficult to achieve, via using auto or manual focus. If this is the case, use a macro focusing rail or set the lens manually to the desired focus point. Then, move the lens forward or back to achieve the sharpest focus.

• When using extension tubes, an on-camera flash is not recommended since it may result in unsightly shadows. For best results, use an off-camera flash, dedicated macro light, or another light source.

Note: There is no electronic aperture control when the extension tubes are used with Nikon AI lenses.

ONE-YEAR LIMITED WARRANTY

This VELLO product is warranted to the original purchaser to be free from defects in materials and workmanship under normal consumer use for a period of one (1) year from the original purchase date or thirty (30) days after replacement, whichever occurs later. The warranty provider's responsibility with respect to this limited warranty shall be limited solely to repair or replacement, at the provider's discretion, of any product that fails during normal use of this product in its intended manner and in its intended environment. Inoperability of the product or part(s) shall be determined by the warranty provider. If the product has been discontinued, the warranty provider reserves the right to replace it with a model of equivalent quality and function.

This warranty does not cover damage or defect caused by misuse, neglect, accident, alteration, abuse, improper installation or maintenance. EXCEPT AS PROVIDED HEREIN, THE WARRANTY PROVIDER MAKES NEITHER ANY EXPRESS WARRANTIES NOR ANY IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY

OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. This warranty provides you with specific legal rights, and you may also have additional rights that vary from state to state.

To obtain warranty coverage, contact the Vello Customer Service Department to obtain a return merchandise authorization (“RMA”) number, and return the defective product to Vello along with the RMA number and proof of purchase. Shipment of the defective product is at the purchaser’s own risk and expense.

For more information or to arrange service, visit www.vellogear.com or call

Customer Service at 212-594-2353.

Product warranty provided by the Gradus Group.

www.gradusgroup.com

VELLO is a registered trademark of the Gradus Group.

© 2021 Gradus Group LLC. All Rights Reserved.

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