Top critical review
Could be better
17 September 2018
I liked that packing and the build quality of the product. As it is small, it is compact. However, being small has its disadvantages:
it's useful only without the phone cover. Aligning the lens with the camera to avoid vignetting takes some time. And it's not possible to completely get rid of vignetting (mechanical vignetting) due to lens size. If it was bigger, vignetting would not be a problem although it compromises the compactness. So every time I need to take a photograph, I have to remove my phone cover to attach the lens and align properly. It's pretty time consuming.
Macro lens: I think 15x magnification is an overkill. When the magnification is increases, the area of focus decreases. Since there is no electronic contact between lens and the camera, you have to physically move to the subject (or bring the subject closer to the camera) for focus. The issue in such case is the phone will cast a shadow on the subject. And that demands for a fill flash which is practically not possible to use with a smartphone. I have had this issue while using this lens. So a 10x would be ideal to use with a smart phone as it gives good area of focus with adequate distance between subject and camera. The plane of focus is fixed one distance so it's not possible to focus on any other distance. The sharpness is quite good with this macro lens.
Wide angle lens: Vignetting is present because of small size. Heavy distortion on the edges but that is expected for a any smartphone lenses.
Fish eye lens: I don't know why would anyone want to use a fish eye lens that would give images with a prominent vignette. It's just unpleasant to look at. The rule of thumb is any vignetting is bad for a photograph unless the photographer wants it.
Here are my suggestions:
Keep the magnification to 10x. It will increase the area of focus and helps you to focus on different distances. It means better composition.
Make bigger lenses: It helps to use the lens with phone cover avoid vignetting due to lens alignment. Although it compromises the compactness, serious Photographers would not mind it.
Discontinue the fish eye lens: Unless you are using it as a decoy to make people to buy this lens kit, discontinue it. It doesn't add any value. Invest more in the macro lens and wide angle lens.