I read about them too being subpar. But, the price difference was around $5 dollars so I got one anyway. They are ok when you use
flash, since flash will compensate for any loss due to glass element. I had good luck with it even without flash and in good light.
This one with flash is not too bad though not a flattering composition of my daughter, the details are not lost. I lowered the contract a tad to make it a bit softer, btw.
Sury
