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pathology_docI've done a little field experimentation with this thing in rough-and-tumble land, and have made the following discoveries.
1) The grip of the retaining magnet to the adhesive mounting ring is not quite what it could be. They really need a pair of magnets, so the two will lock together centre-to-centre at once and stay that way - the distortion when off centre is remarkable, and it shows a tendency to shift if you repeatedly pick the phone up and put it down. OTOH it seems to slip only minimally under gravity, if at all. In this sense, something optimised to mounting on a single model of camera (like the Olloclip is for the iPhone) is far superior.
2) I took pictures of things at various distances. Depth of field is short at anything less than arm's length; reliable, blur-free hyperfocal distance is at least the length of a tall man's arm. This lens is probably a better match for phonecams that have some sort of autofocus capability than for fixed-focus types.
3) Lens flare LIEK WHOA.
4) The lens cap stays on fine (good), but is occasionally a little slow to peel off if you have very short fingernails that tend to break.
In short, it is still a compact, cheap and convenient way to slightly extend the range of your phonecam if you're not contemplating trading up in the mobile phone world. But you should be aware of its limitations, and also those of your cellphone's camera - because the two tend to add at least, and occasionally to multiply.
1) The grip of the retaining magnet to the adhesive mounting ring is not quite what it could be. They really need a pair of magnets, so the two will lock together centre-to-centre at once and stay that way - the distortion when off centre is remarkable, and it shows a tendency to shift if you repeatedly pick the phone up and put it down. OTOH it seems to slip only minimally under gravity, if at all. In this sense, something optimised to mounting on a single model of camera (like the Olloclip is for the iPhone) is far superior.
2) I took pictures of things at various distances. Depth of field is short at anything less than arm's length; reliable, blur-free hyperfocal distance is at least the length of a tall man's arm. This lens is probably a better match for phonecams that have some sort of autofocus capability than for fixed-focus types.
3) Lens flare LIEK WHOA.
4) The lens cap stays on fine (good), but is occasionally a little slow to peel off if you have very short fingernails that tend to break.
In short, it is still a compact, cheap and convenient way to slightly extend the range of your phonecam if you're not contemplating trading up in the mobile phone world. But you should be aware of its limitations, and also those of your cellphone's camera - because the two tend to add at least, and occasionally to multiply.