Main Features:

Made of Anodized Aluminum in Black finish with high quality.

The length of this helicoid tube is 12mm (min) to 17mm (max), it offers a total of 5mm movement distance for the lens focusing.

This Helicoid tube is useful for those lenses without focus ring, Tube offers fine focus control for macro photography.

You can use M42 Adjustable Focusing Ring screw mount lenses, such as for Carl Zeiss or for Pentax 42mm screw mount lenses, and even enlarger lenses.

It could be used as Macro Barrel.

Item Description:

Product name：M42 to M42 Mount Adjustable Focusing Helicoid Adapter 12mm-17mm

Instruction: Attach the Helicoid tube to the lens, then mount the combination of lens and Helicoid tube to the camera.

Package including:

1pc x M42 to M42 (12-17mm) Focusing Helicoid Adapter

Notice:

1. Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other function will not operate correctly while using this adapter.

2. In this case "Stop-down mode" will need to be used when metering since the lens doesn't have the ability to have its apeture controlled by camera body.

3. You can shoot with manual mode or aperture priority mode.

Shipping：

1. We ship to Worldwide, excluded some far away places.

2. All the items will be shipped within 1-2 working days after receiving the payment, except some holidays.

3. We only ship to confirmed eBay address; your eBay address must match your shipping address.

Taxes, Customs & Duties：

1. Some countries are required to collect customs duties. Please confirm your local customs duties before placing orders. 

2. We will not be responsible for any custom delay or tax, because transit time is highly depended and provided by postal Service.

Aftersales:

1. If you are not satisfied with the item you received, please return it within 30 days for a replacement or money back. Please contact us before you return it.

2. All returned items must be in the original packaging with all components and accessories included, and you must provide us the return shipping information.

3. Return shipping fee is to be paid by the buyers. We will not be responsible for any custom duty or import tax.

Customer Service:

If you have any questions, please try to contact us through the eBay message first. Our customer service will reply you within 48 business hours and we will try our best to solve your problem.  

Your satisfaction is the priority of our customer service.