The Heliopan 74-77mm Step-Up Ring (#640) is a step-up ring permitting the use of 77mm threaded filters on a 74mm threaded lens. Constructed of matte black brass, Heliopan step-up rings are highly durable and longer-lasting when compared to aluminum rings.

Use 77mm Filters on 74mm 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. How long is the warranty on this?

A: The manufacturer's warranty is two years from date of purchase on all Nissin Flashes.

Q: 2. How does this unit attach to a macro lens. Other companies with similar product spring load onto a retaining ring. Is this the same with this product?

A: To attach the Nissin MF18 Macro Flash for Nikon to a lens, you attach an appropriately sized adapter ring to the front thread of the lens, and attach the flash head to the adapter. There are then four mounting tabs on the inside of the flash head that you need to press down into the grooves of the adapter ring.

Q: 3. Is this compatible with Sony A7iii?

A: Yes, but ast it is dedicated to the Canon system, it can only be used in the manual mode on a Sony system via the center contact pin on the hotshoe.

Q: 4. Is this compatible with the Nikon D850?

A: The Nissin MF18 Macro Ring Flash for Nikon is fully compatible with the Nikon D850 DSLR Camera.

Q: 5. What is the power - in w/s - of this flash?

A: The Nissin MF18 Macro Ring Flash is a great flash for macro photography. It is a powerful TTL flash with GN16 (82 Ws) at full power, and offers Manual power control from 1/1 to 1/1024. The flash tubes can be controlled independently in Manual mode, or you can set an A:B ratio when using TTL. The MF18 also features 4 LED lights (2 on each side of the ring) that can be quickly toggled on/off by pressing the "Set" button for 2 seconds. If you have any other questions please contact us directly by sending your email to support@expoimaging.com. Best Regards, Answered by Expo Support Representative Nov 30, 2020

Q: 6. Is this compatible with the Sony fe 90 f2.8 macro lens?

A: Yes, the Nissin MF18 Macro Ring Flash for Sony is compatible with the Sony FE 90mm f/2.8 Macro G OSS Lens.

Q: 7. What is the t.1 timing on this flash?

A: The recycle time varies depending on your power settings and your batteries. It can range between 0.1 and 5.5 seconds.

Q: 8. What is the diameter of this Phottix Raja speedring? Dimension is not given in the specs.

A: This ring has an outer diameter that is a little over 5 10/16 while the inner diameter is 4 5/8 .

Q: 9. Does it work with profoto b10 ?

A: This ring will work with a Profoto B10.

Q: 10. Can you trigger the modelling light from a Sony camera button?

A: According to the user manual, you may only activate the modeling light via the SET button and not via a camera function/button. 1. To switch on the modeling LED lamps, press set for 2 seconds. 2. The LED lamps switch off temporarily when the flash fires, then switch on again for the next shoot. The icon (light bulb) is indicated on the screen. 3. To switch off the modeling LED lamps, press set for 2 seconds.