The Heliopan 27mm Close-Up +3 Lens for Enhanced Photographyis a convex diopter designed to decrease the minimum focus distance of any lens in order to produce a shorter working distance for close-up photography. Available in varying strengths, close-up lenses also feature 27mm front filter threads for combining two or more filters to fine-tune results.

The front and rear surfaces of the filter both feature a single anti-reflection coating. Each coating helps to increase light transmission by reducing reflections, scattered light, and ghosting. Additionally, they offer protection to the filter substrate while helping to keep the glass clean for longer than uncoated glass.

This Heliopan filter is constructed from Schott glass for increased optical clarity and color fidelity. It features a brass filter ring for durability as well as jamming prevention.

Decreases Minimum Focus Distance    Convex Lens, +3 Diopter    Provides Shorter Working Distance    27mm Front Filter Threads    Front and Rear Coating    Schott Glass Construction    Brass Filter Ring

Convex lens design and +3 dioptric strength lessens the minimum focusing distance of any lens for close-up shooting.

Single coatings on both the front and rear offer protection to the glass and help to improve light transmission and image quality.

Constructed from Schott glass for optical clarity.

Brass filter ring helps to prevent jamming and provides additional strength.

Dual threading with 27mm front filter threads permits combining with other filters.

Related Questions and Answers

Q: 1. Is this an autofocus?

A: No, there is no communication between the tubes and lens/camera. Auto-focusing while using extension tubes is a lesson in futility, it just won't work. Manual focus is the only way to go when shooting extreme macro.

Q: 2. Can these lens work with the Canon 28 mm macro lens?

A: Yes they will fit the Canon EF-M 28mm f/3.5 Macro IS STM Lens.

Q: 3. Would these work for video on a Sony FX6 with Rokinon glass? The lens is 100% manual, so no loss of function to worry about.

A: The FotodioX extension tubes do work with the FX6. If you're using manual lenses it should work fine.

Q: 4. Will this work on an eos rebel T6i?

A: Yes, the FotodioX Macro Extension Tube Set for Canon EOS (EF, EF-S) Cameras would be compatible for use with the Canon EOS Digital Rebel T6i DSLR camera.

Q: 5. Can I use it on sigma 18-250?

A: Yes, this will work on the Sigma 18-250 mm lens. The threads are 72 mm. I have the 18-250, and use it all the time.

Q: 6. Is it compatible with Nikon 850? Any other better kit, suggestions?

A: The FotodioX Macro Extension Tube Set for Nikon F-Mount Cameras: for Extreme Close-Up Photography is a manual macro extension tube set that would be compatible for use with the Nikon D850 DSLR Camera. If you want a set of macro extension tubes that will retain automatic electronic communication between the camera and lens (which would allow you to retain autofocus and automatic exposure capability), the Vello EXT-ND2 Auto Focus Extension Tube Set for Nikon F-Mount Camera and Lenses, B&H # VEEXTND2, would also work for your usage needs.

Q: 7. Will this affect picture quality if I attach it to the sigma 18-300 all the time ?

A: You should use it only when trying to shoot macro. Otherwise AF will not work properly.

Q: 8. Will these work on a cannon lens?

A: Vivitar 52mm Close Up Macro Lens Kit BH #VICUFK52 will work on Canon lenses with a 52mm-diameter front thread.

Q: 9. what's the diameter of the threaded spacing ring? It that compatible of an ordinary step-up/step down ring?

A: We cannot find any information suggesting that these rings can use step-up rings.

Q: 10. Can you use these rings to duplicate slides?

A: Yes, with the right lens. Your slides will have to be evenly back lit and you will also need to have the system optically centered, aligned and stable. Extension tubes are made for general close up and macro photography. If you only want to copy slides check out "slide copiers" listed at B&H.