Perhaps, I know Charmant used to use those washers in their titanium rimless frames, not sure if that's still the case as I haven't sold Charmant in...
The formula for TCA (transverse or lateral chromatic aberration) is cF/V. Where c is the distance from the OC in centimeters, F is lens power, and V...
Exactly what kind of feedback have you received from your customers. What criteria do you think is important for good results. My experience has been...
