If only phones had an aperture diaphragm! This lens would be absolutely perfect but due to phones adaptation to light on the software level, it’s not as affective as I’d hoped. I try pushing my iPhone 12 Pro Max to do what my DSLR can do but you can’t fit a round peg into a square hole. This product works best under already low light conditions but not for daytime water motion effects. The image provided was under quite a bit of shade. It’s okay, but I’m picky and like longer exposure. Not the fault of Sandmarc guys, it’s the phone makers. This is why I still hang onto my DSLR, more flexibility. The filter does work well for video as intended.
Only thing I can complain is the cover, it could be made to fit the lens with the mount properly and safely
I ordered the variable ND filter and an iphone 12 pro max case. For some reason I thought the filter would attach to the special case. The filter came with a clip which is great, but I guess I didn't need to spend the money on the case. I know this is my error, but after reviewing the product descriptions, I still wish it were more clear that this filter does not directly attach to the case. Also, I do quite like the case, so I am keeping it. 4/5 stars for lack of clarity on the SANDMARC site regarding how their lens systems work together and with cases...or not. Thanks!