Advances in high-index / low-dispersion optical glasses, new barrel materials, and exotic anti-reflection coatings, along with the latest in computer-aided-design / computer-aided-manufacturing, are combined to produce lenses of unprecedented quality. Rather than raising the cost of Opteka lenses, however, these advanced materials and techniques allow more efficient and economical production. The results are lenses of remarkable quality and durability at remarkably affordable prices. |
