The Heliopan 27-40.5mm Step-Up Ring for Photographyis a step-up ring permitting the use of 40.5mm threaded filters on a 27mm threaded lens. Constructed of matte black brass, Heliopan step-up rings are highly durable and longer-lasting when compared to aluminum rings.

Use 40.5mm Filters on 27mm Lens    Brass Ring for Durability    Matte Black Finish Reduces Glare

Efficient solution for use of one size of filters with various sized lenses.

Matte black brass lessens chance of glare.

Rugged construction for ease of use.

Related Questions and Answers

Q: 1. What is the pitch of the 86-95 step up ring? Does it match the Otus 85mm?

A: Sorry but unable to help. Don't know the Otus and don't know the pitch. All I can say is, that it's a quality ring.

Q: 2. Hi ... What is the difference between the Heliopan #143 62/77mm Step-Up Ring, and the Heliopan #144 62/77mm Step-Up Ring??? The descriptions do not say ... other than price, of course. ...Robert G.

A: The Heliopan ring, # 700-144 is a special model that can accept both 77mm threaded filters, as well as Series 8.5 type filters. Our product link for this model on our website is slowly being changed to reflect the new information we received about it since receiving your inquiry.

Q: 3. What is the outside diameter of this ring? Is it 100mm so that I can use a push on lens cap?

A: The outside diameter is around 97mm-98mm. A 100mm lens cap will be loose.

Q: 4. I need to mount a 62mm filter on a 72mm lens, do I need a step up ring or a step down ring?

A: You would need a 62mm to 72mm step down ring.

Q: 5. What is the thickness of this filter in mm, especially the outside 82mm diameter portion?

A: The thickness of this step up ring is about 4mm.

Q: 6. Looking to use this on my sigma 18-35 f1.8. With a filter on it, will there be vignetting?

A: You could use the Heliopan 72-77mm Step-Up Ring (#141) on the Sigma 18-35mm f/1.8 DC HSM Art Lens. You will not get vignetting but you will not be able to use the lens hood.

Q: 7. is this 43x0.5 or 43x0.75?

A: The Heliopan 43-46mm Step-Up Ring (#243) has a 0.75 thread pitch.

Q: 8. What is the thread on the 100mm side? 0.75 or 1.0?

A: The thread on both sides is 1.0 mm or coarse.

Q: 9. I'm trying to mount 86mm coarse filters on a P6 45mm Hartblei Super Rotator. Is the 86mm side coarse threaded?

A: Unfortunately, the 86mm side is not shown as coarse threaded by the manufacturer.

Q: 10. Would this ring permit the use of 55mm threaded filters on a lens with a Series VII filter-thread? The Leica R 90mm f2 (old version, not the later version) is the lens I have in mind.

A: No, that adapter is for lenses that have a 54mm thread. Series 7 is not 54. If you have a retaining ring, most of those are 54 mm it might work. But the adapter alone will not work. This is a retaining ring, General Brand Series 7 Retaining Ring BH #GBRRS7 https://bhpho.to/3bJHVPU