The X-CEL 2x Barlow Lens -1.25 from Celestron has a 3-element fully multi coated design. It has a brass pressure ring for securely holding the eyepiece without damaging the barrel. A ridged rubber grip provides a secure, non-slip hold. The black anodized finish with orange rings makes for a visually attractive device. It is threaded for 1.25" filters.

Fully Multicoated    Rubber Grip    Brass Pressure Ring    Black Anodized Finish    Threaded for 1.25" Filters

Threaded for 1.25" filters

Brass pressure ring holds the eyepiece securely without damaging the barrel

Rubber grip and hard black anodized finish with orange ring provides a secure grasp with an aesthetically pleasing design

Fully multicoated furnishes multiple layers on all air to glass surfaces for a brighter, higher-contrast image with less eyestrain

Related Questions and Answers

Q: 1. will it work with a nikon D90 and a Tamron 70-300 lens?

A: It will fit and shoot but you will lose autofocus as well as 2 stop of light.

Q: 2. will this work on a d500 using a af-s nikkor 200-500 1:5.6e ed lens?

A: Yes, the Vivitar 5 Elements 2x Autofocus Teleconverter for Nikon F-Mount Lens should be compatible for use with the Nikon AF-S NIKKOR 200-500mm f/5.6E ED VR Lens. However, do note that the lens would not be able to autofocus with this combination. The lens would be an equivalent of a 400-100mm f/11 lens, and the Nikon D500 requires an equivalent maximum aperture of f/8 or brighter to maintain autofocus. As such, you would have to focus the lens manually.

Q: 3. Will autofocus work with a D5600 and a Nikon DX 70-300 lens?

A: The Vivitar 5 Elements 2x Autofocus Teleconverter for Nikon F-Mount Lens is not compatible with the Vivitar 5 Elements 2x Autofocus Teleconverter for Nikon F-Mount Lens. And that lens in general is not compatible with any teleconverter.

Q: 4. Will this Vivitar teleconverter work with a Nikon Z5 with an FTZ adaptor and a Nikon AF-S NIKKOR 70-300mm?

A: The Vivitar 5 Elements 2x Autofocus Teleconverter for Nikon F-Mount Lens will work on the Nikon Z5 Mirrorless Camera, Nikon FTZ II Mount Adapter, and the Nikon AF-S VR Zoom-NIKKOR 70-300mm f/4.5-5.6G IF-ED Lens. Keep in mind that the Vivitar 5 Elements 2x Autofocus Teleconverter will cut two stops of light, so you will have to manually focus. Image quality will also be reduced.

Q: 5. what mm is the threads on the front of this lens for a screw on polarizing filter?

A: The Canon HDTV Portable HDxs Lense has a 127mm filter size. Polarizer ideas - B&H # SCOSCP127 or B&H # FOCP127 More choices https://bhpho.to/3bgkUtr

Q: 6. Will this work with a Nikon D3300 with AF-S Nikkor18-55 MM and AF-S NIKKOR 55-200 MM AF-S NIKKOR 50 MM lenses?

A: The Vivitar 5 Elements 2x Autofocus Teleconverter for Nikon F-Mount Lens, like all teleconverters, is designed to work with telephoto lenses with focal lengths of at least 60mm. It will work with the 55-200mm lens, but you would not have autofocus--it will be manual focus only.

Q: 7. can this be mounted to a dlsr camera?

A: There are mount adapters that can interface 2/3 B4 mount lenses such as this and a DSLR camera, however, depending on the exact lens mount and camera, there may be some limitations to avoid vignetting.

Q: 8. Will it work with Nikon 28-300mm lens?

A: The Tele converter will fit but keep in mind you loose 2 stops at every focal length this means at the 300mm end your image will be very dark even at max aperture, the optical quality will also suffer Don't expect good results. Best use w.ould be with fixed Focal lenths lenses that you can stop down 1 or 2f stops.

Q: 9. will this work with the Tokina 100mm f/2.8 with the z mount adaptor to a z50 nikon?

A: You will not have auto focus

Q: 10. Vivitar 5 Elements 2x Autofocus Teleconverter for Nikon F-Mount Lens. Will it work with Nikon D5000?

A: This lens will work with the Nikon D5500