SIOTI ND32 Square Filter 5 Stops(1.5), 100mm*100mm*2.0mm, Multi-Coating, Schott Optical Glass Compatiable with ≤82mm Lens(ND32(1.5))

I purchased this to use with a Canon 24-105 lens. The construction is metal and better than previous plastic filter holders I have used. The screw in the top to secure the filter holder in place can be loosened to allow the filter holder to be rotated and then re-tightened, making switching between landscape and portrait a breeze.I purchased an 82mm Hoya Slim Circular polariser, which can be screwed into the front of the adaptor ring. This only left room for one square filter as the circular polariser protruded into the second slot. Not a huge issue unless I want to use a polariser, ND filter and grad filter together. Personally I can work around this by using the polariser and ND filter and blended a bracketed exposure instead of using the grad. The other option is to mount a screw fit ND filter behind the adaptor ring. I used a Hoya ND64 with the the filter holder mounted on top but did get vignetting on the 24-105 (might work with a thin filter).I use this with a LEE ND Grad filter and it fits very well (not so tight you feel like you have to force it and not at all loose so you have no worries about the filter falling out). I also use this with a Zomei ND1000 (big stopper) and it performed very well. You have to be mindful of light leaks when using a big stopper with a square filter holder system. When mounted in the first bay, the gap between the front of the lens and the filter is small (a few mm). My first test shot indicated some light leak (as I would expect with any filter holder). The solution is easy, drape something (e.g. a glove) over the top to prevent light getting in. Some square filters (such as Haida) come with sponge tape stuck around the filter to fill the gap. I bought some sponge tap and tried this but it made it more tricky to insert filters so the simple solution won!Over all, very impress. Glad I didn't spend 3 times as much or more on some of the alternatives. Thoroughly recommended.

Confusing adapter ring size description; also does not take LEE Pro filtersThe adapter ring size description is a mess; no idea how a ring can be 58-62mm ? its fixed, to fit the lens thread?Once aside the above did fit a 58mm lends thread, but the thread is very thin.Cheap plastic additional filter holder included, along with extension screws and a tiny screwdriver to fit.Overall did not represent the price, so I sent back and bought the K&F concept instead which offered far better value with a variety of ring adapters that were also included for the same price and quality.

Exceeded my expectations. This is a well made aluminium filter holder that went straight onto my 72mm Sony lens without a problem. Easily as good as my trusted Lee filter holder, which cost 3 times as much. The Lee is going on Ebay straight away. Why pay more for a brand name when this brilliant filter holder does exactly the same thing at a fraction of the cost? Made from aluminium means that this filter holder will last years.Being on a bit of a budget I was worried about going for an unfamiliar brand. All I can say is, I am glad I did and I am happy to give you the confidence to go ahead and get one.I really hope that SIOTI make some glass or even plastic filters. If they can just go and produce high quality filters and smash the price imposed by the big brands, then they could become a go-to brand for those wanting their money to go further whilst not missing out on quality. Come SIOTI make it happen!!

When I first took it out of the box I knew it was a quality build, the full metal body feels really study and durable.The plastic pieces that holds the filters seems a bit cheap, on two of them I found a fair bit of left over plastic from the cutting.This isn't something that bothers me a whole lot tho, as my filters sits tight and secure.The addition of a 62mm thread for a round filter is a nice feature, but as it sits behind the square filters, it will result in a bit of extra work (if you use a polarizer on there, you would have to remove the other filters to turn it)Overall I am very pleased with my purchase, and would definitely recommend it.

I wasn't expecting much at this price point but I have to say I'm impressed. My previous holder was damaged and the replacement would have cost me three times the cost of this one.I use 100mm Cokin filters and with a extra layer screwed on (included in the box) I can stack two filters with the light seal or three without.Apart from the holding brackets this is a metal construction and I'm confident the filters will stay in place although it's worth tightening the screws on occasion. I use step up adapters to attach this, unlike the more well known brands options are limited for different sized lens threads.Attached images were taken using this and a Cokin 5 Stop filter while vlogging in a local woodland.

Compare this to the Lee Foundation system and you'll see subtle differences. Not enough in my opinion to warrant the Lee price tag. For occasional use or even semi-aggressive-amateur usage, the holder works really well. If you need the Lee system then by all means purchase it.I have to be honest, for my requirements the Sioti range is more than acceptable and so far, it's not failed me.

I bought the 82mm size plus a 77mm ring fitting, as a backup to my Lee holder system. It works just as well as the Lee system - to use the polariser you need to set the polarising position before inserting the nd filter(s), but its much neater than the enormous ring you need to fit on the Lee system. The cost is a fraction of Lee, Hitech or Nisi holder systems - whats not to love!It seems to be sturdy, with a metal rather than plastic construction, so hopefully it will stand up to wear & tear - time will tell on that.