Here's a quality lens that offers iPhone users a pro filtering option. This lens scores high for ease of use. Just twist the outside, and it quickly adjusts from max to min. I found it challenging to identify the optimal setting when shooting with my iPhone 13 because the bright sun made it difficult to see exactly what I would get in my finished product, so I ended up taking pictures at different settings to test them. It includes a protective case, which I find a bit bulky at 3.75" square by 1" deep, but still portable.

I've taken a lot of photos, but these best illustrate what the different settings on the lens can do and will help you assess whether you need one. In the boathouse sequence, low filtering helps bring out the background colors significantly, but with no filter, the blue colors offer the most appeal.

While I appreciate the lens's capabilities, I struggle with finding the perfect settings for my photos. This process requires patience and practice, and I'm hopeful that with more experience, I'll be able to harness its potential fully.

We also tested this briefly on an iPhone 15 and got different results. The iPhone 15 camera has an additional coating designed to reduce lens flare. We only shot a few photos, but the camera's processing seemed to kick in after opening the photo and adjusting them all to look roughly the same. I can't share what the processor is doing; the changes only become visible when the phone is in the "live" setting. (I turned off the live setting when I shot my photos.) My tests were inconclusive, but it's something that bears noting.