Bower Step-Up Adapter Ring 67mm Lens to 77mm Filter Size

I owned canon L series lenses both 77mm. I ordered this step-up adapter ring because I was not ready to buy new 67mm filters for my newly purchased 70-200mm f/4 IS usm canon lens. The adapter's male side fits perfectly with my new 70-200mm lens and most of all, the 77mm filters I have can be screwed-in without a problem. However, be cautious if you attached a circular polarizing filter. From my own experienced, I learned not to attach it too tightly to the adapter because it would be difficult to unscrew it out. The filter adapter is so thin that you don't have much room to hold the polarizing filter non-rotating side. This is the reason why I gave this product 4 stars only. When the polarizing filter is attached to the adapter (remember not tightly), before I take picture, I adjust it by rotating it clockwise (facing the camera) only to make sure I don't unscrew the adapter from the the lens.

Received this in good time and it's well made including threads on both sides. I did something you're "probably not supposed to;" I put some WD40 on it and then wiped ALL traces off; this cleans out any machine dust from threads. You certainly don't want WD40 in your filter/lens threads obviously .. but I made sure it was double-wiped clean.Threading is great and just remember (as others have said) not to tighten a polarizer too much if that's your filter of choice; depending on your polarizer there may be "little room" to loosen it. I've mounted mine to the ring and found a case deep enough to carry both in my bag (saves room and time) .. but this is a quality product and saved me roughly $95 in not buying a 67mm polarizer. I'd recommend it to anyone.

Not much to this review, but I have a bunch of nice Nikon pro lenses (like the Nikon 17-55mm f/2.8G AF-S DX and the Nikon 70-200mm f/2.8G VR II), and a few cheaper lenses I use for walkaround and when vacationing. So, instead of buying two sets of mediocre filters, I've purchased great B+W/Hoya filters at 77mm, and I simply screw this step-up ring into my cheaper walkaround lenses.Works great so far with the following lenses (that I've tested): Nikon 18-35mm AF Zoom,Nikon 18-105mm DX VR,Nikon 18-70mm DX.

The Bower Step-Up Adapter Ring is great for someone that wants to use their larger lens filters - and in my case, a 77mm ExpoDisk - on a smaller diameter lens (most of mine are 67mm). The product is reasonably priced (actually quite cheap), however it is solid in terms of quality and should last a lifetime. From now on I will only buy large diameter filters and simply adapt them (with Bower Rings) to fit any new lens that I purchase.Thanks for offering such a simple and cost effective solution to photographers both novice (like me) and expert.

Good metal threads. Easy to screw on my camera lens. No reflection finish.

I used to use universal step-up sets that stacked in increments. Because I use my DSLR primarily for video acquisition, I often have to use step-up rings to accommodate my circular ND filters for daytime use. When I purchased my Tamron 17-50 for my Canon 550d, I figured I would give the one-size a try. Not only is it sturdier and less cumbersome than the universal rings, it also seems to help in reducing corner vignetting, possibly by reducing the distance of the optics to the filter. I'm sold.

With this I can use a B + W 77mm #022 Glass Filter - Medium Yellow #8 on a Canon EF 70-200mm f/4L USM Telephoto Zoom Lens for Canon SLR Cameras which has a 67mm filter size and not only on a Canon EF-S 10-22mm f/3.5-4.5 USM SLR Lens for EOS Digital SLRs for which I bought it originally. Good product at a good price.

This is a well made step-up ring. I can't find anything to fault it for but when I select 5 stars and it says "I love it" I just don't feel that's accurate. It serves its purpose well and the price is fair. When the time comes to get another adapter ring, I'll probably this one again.

It fits perfectly with my canon 18 -135mm kit lens!