The Nikon E series 28mm f/2.8 and Nikon E series 35mm f/2.5 come with closest focusing distance of an amazing close working range of 0.3m. All these lenses are treated with Nikon exclusive NIC process. So it is not entirely disappointing, the difference is only how to take good advantage of the lens types, design, features with your photography.
MX89AK6: Elbaite crystal with very well defined faces and edges, with perfect terminal faces, with pyramid and pinacoid forms. The crystal, translucent and bright, is a different color from those known to date in this pegmatite, with pinkish-yellow tones that accompany the usual red color that is very intense on the terminal faces.
Active rectification, or synchronous rectification, is a technique for improving the efficiency of rectification by replacing diodes with actively controlled switches such as transistors, usually power MOSFETs or power BJTs. Whereas normal semiconductor diodes have a roughly fixed voltage drop of around 0.5-1 volts, active rectifiers behave as resistances, and can have arbitrarily low voltage ...