Love this product, use it with the lee soft nd set. Works very well. I got a 77mm wide adapter ring and use a 77 to 58 mm step down ring because of the cost of buying multiple adapters.

The Lee Holder system is great and allows you to use your filters on all your lenses rather than buy filters for each filter size. Price is quite cheap. Haven't found any negatives as of now. I knew what it was and was I was purchasing so I am quite happy with my purchase.

This item is really hard to come by. Finally received from B&H, first impression is solidly build. for the price compare from other brand, I think it's great deal, hope it will last, also bought the 77mm WA adapter ring work with it, WA adaptor ring is little pricy, I'm happy with the quality. ...

Best in the Market. Very easy to use, you can use on all your lenses with the Adapter Rings.

Great holder, holds 2 filters by default, additional screws and 2 more brackets included. The top thin plastic where the screws attach breaks with use... happened on 2 holders for me in the recent months, but not on the first one that I had for a year (and lost on a trip). They are hard to find sometimes (sold out) and shouldn't be so expensive.

I purchased this system because the Cokin holder did not allow an efficient means of combining the B&W ND110 with a rectangular grad ND filter. With the Lee, the adapter ring allows the ND110 to be screwed onto it directly with sufficient clearance for the holder to be mounted as well. The design of the holder is so simple and effective, it can be mounted or removed in a second, securely, without disturbing the lens zoom or focus. This holder system is of very high quality & design. Ease of use is superb. If there is a drawback, it is that using it with the B&W Nd 110 requires the third slot be added, and that does vignette at 18mm (27mm for a full frame). So, wide angle framing can be problematic.

I've had one of these for years, with several graduated filters, and 2 of the adapter rings to fit various lenses. Note that if you buy a large enough adapter ring, you can then theoretically use cheaper step-down rings to fit your smaller lenses. Also note, there's a brass screw which is part of an assembly on the side of the Foundation including a spring and a small brass wedge which combine to hold the adapter ring in the Foundation. This, unfortunately, does occasionally come unscrewed on its own, usually in your camera bag, leaving the 3 pieces potentially separated until you re-assemble. Doesn't happen every day, but every few months of dinging around in your bag. So keep the whole thing in its pouch or a plastic bag when not in use. GOOD NEWS: If you do lose these parts, they are easily ordered from Lee directly. I called them the other day, phone was answered immediately, and in 60 seconds they took my name and are sending me the wedge piece which I finally lost in the field (I still had the screw and spring). All at no charge to me. More than I expected, so THANKS to Lee for standing behind their product. I'll put some loctite on the threads this time and maybe it'll stay together.

Very happy with the Foundation Kit! I like the adaptability to stack filters in different configurations 2mm & 4mm. I also ordered the 4mm holder blocks. I was previously using the Cokin P holder with various resin filters. They were ok but the resin ND often gave a color cast. I Picked up the Lee holder so I could use Schneider glass. What a huge difference! The thicker glass is much easier to handle and the Foundation kit holds the filters tightly.

Works great, not much else to say.

Just received this product ... and haven't had a chance to use it much yet but the first thing I noticed is how sturdy it seems. Easy to figure out, works great with my single ND filter, can't wait to see how it works with stacking of different filters.