Vello Ringbox Ringflash Adapter

Yes, the Sony HVL-F28RM External Flash (B&H # SOHVLF28RM) should work with the Vello Ringbox Ringflash Adapter, since it has an adjustable strap for the flash.

My experience is to use the most powerful strobe that you have with the Vello Ringbox Flash Adapter. The light of the flash is bounced around the inside of the ring (loses some lumen power) and then goes through the white covering where some light is absorbed by the fabric) and then creates a white washing affect to soften but illuminate your subject. The light, although soft, is pretty direct so the outsides of a large group might fall outside of the range of the light. This design centers on mounting your strobe on the hot shoe and placing it into the top-back of the Ringflash Adapter. Your lens fits through the center. This might hide your infra red sensor on your flash if you have one. The bottom line is that I have found there is considerable light fall off using this unit. Need to have a powerful flash unit to compensate for the loss of light unless the subject is fairly close to the camera.

I read somewhere though thatthey suggest setting to 1.5 X rather than TTL for its use. i have the item but have not tried it yet.

You can certainly use this ringflash, Just as long as the hotshoe flash reaches the opening atop the camera, about 6" between top of hotshoe and flash opening.

The light is even top an bottom because it travels thru a few cleverly designed prisms Made of reflected fabric ... Money well spent I hope my answer was convincing. :-)

After examining the images in B&H's on-line catalog, I can verify that the Ringbox will NOT work with a camera's pop-up flash, an external flash unit is required. The opening for the flash itself is a good 2 inches too high for the pop-up flash to reach it. The only thing I can recommend (if you really want the Ringbox) is an external flash unit with a swivel head that's compatible with your camera (if your camera has an external accessory hot shoe), or you can look into something like a Bolt VM-110 Macro LED Ring Light that also requires standard hot-shoe but brings it 's own light source, so you don't have to buy a separate external flash unit (the Ringbox and the Bolt VM-110 are about the same price). The VM-110 is AA battery powered and LED driven and has adjustable camera/lens mounts that adjusts to many different DSLR and 35 mm SLR cameras. If you have a standard DSLR, this ring-light will probably work on it.

Mehi S, I have a 16-35mm Canon lens and it will fit, but you'll need to use the auto focus option since you will not be able to manually focus. My lens is 82 mm wide. I do't know how wide your 17-40 L mm lens is so you'll have to judge for yourself. The one thing that I should point out about the Vello Ringbox Ringflash head is that a grommet holding the spreader arm which hold the form when this soft box light ring is open up pulled out after just two uses. Kind of makes the item useless. Haven't used it since. Very disappointing.

You can reach around the side of the box into the lens opening to be able to focus. That is how I use it with zoom lens. The ringflash is also great for macro lighting. I use ringlights in my studio and this unit does a great job on location. Small enough to carry with you and the price was also good for the product.