The Auto Extension Tube Set for Canon EF/EF-S Mounts and Lenses contains three extension tubes of 13, 21, and 31mm lengths. They can be used individually or together in seven distinct combinations to create the desired magnification effect. For closer focusing use the larger extension tube or stack the tubes together.

1-770-333-4200. Description. These close-up accessories maintain full electronic coupling between the camera body and lens, often providing greater magnification than is possible with close-up lenses. Can be used with most EF lenses, and are ideal for nature photography with single focal length telephotos. Manual focusing is recommended.

Options. 12-31-2022 10:35 AM. The EF12 contains contacts to allow the lens and camera to communicate. So, you should be able to set the aperture and autofocus. However, autofocusing may prove to be a little cantankerous, due to the higher resolution and control demands that will be placed on the AF motors.

Weight. 5.36 oz / 152 g. Package Weight. 0.5 lb. Box Dimensions (LxWxH) 3.9 x 2.85 x 2.8". Buy Viltrox Automatic Extension Tube Set for Canon EF featuring For Canon EF Lenses and Cameras, 12mm, 20mm, and 36mm Extension Tubes, Shortens Minimum Focus Distance of Lens, Autofocus & Auto-Exposure Functionality, Aluminum Mounts, Gold-Plated Contacts.

The first is a 0-35mm variable extension tube, designed primarily for use with wide-angle lenses – Nick often uses it with his Canon 35mm and Samyang 14mm EF mount lenses. Nick tells DIYP that this particular adapter takes advantage of the 26mm difference in the flange difference between Canon EF and Sony E mounts.

^{Canon EF 25 II Extension Tube. 0.0. Extension Tube: εξάρτημα που αυξάνει τη μεγέθυνση ενός φακού μετακινώντας} Thanks for the reply and sorry you had to go to all the trouble of describing the effects of teleconverters and extension tubes - I am VERY familiar with the optics etc. I also should not have said "I read" about this setup. I did read about it but also saw it being used in an online tutorial given ^{wrote: I need to know the inside diameter of the Canon 12mm extension tube. I want to use the extension tube between my 1.4X III teleconverter and my 100mm 2.8 L macro (which are otherwise non-compatible). I have read where people are using this combo successfully BUT the protruding portion of t}

Because the Canon EF mount lens "expects" to be further from the sensor than a Sony E mount lens; this is known as the flange focal distance or the registration distance - a Canon EF lens focuses the incoming light on a plane 44mm behind the lens, while a Sony E lens focuses it on a plane 18mm behind the lens.

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canon ef 25 extension tube