High-end Fluorite Glass typically used in premium-quality prime and zoom lenses have a Refractive Index of 1.434 while pure optical grade acrylic is 1.495. A lens coating such as Sapphire has a refractive index of 1.76 (i.e. refractive index = how much does light "bend" away from a given incoming light direction)
Refraction is a good thing or a bad thing depending upon application. In terms of Cinema-grade prime lenses and zoom lenses equivalent to the quality of Zeiss Master Primes or Leica Summilux-C, high refraction indexes are a GOOD THING allowing a lens designer to grind and shape lenses so that MORE LIGHT is gathered and re-directed towards the CMOS/CCD image sensor. This means brighter, clearer imagery with less object edge fringing and unintended distortion.
If one uses advanced software that ray-traces each light ray path towards each photosite on an imager, one can design BOTH prime and zoom lenses such that T1.0 to T2.0 lenses can be made that are TRULY NEUTRAL AND SHARP with ALMOST NO coma, chromatic aberration, colour shifting or prismatic effects! By coating the outer and inner layer of an optical grade all-acrylic lens element with Sapphire (aka clear Aluminum Oxide), the layer density and the optical diffraction and refraction path differences between the two substances CAN be accounted for in software that then gets translated to real world light gathering in variable conditions ranging from Golden Hour Sunset/Sunrise to Harsh Overhead Noon Sunlight to Gloomy Cloud-cover days and near midnight dark conditions.
The key issue being outlined in this post is that very recent discoveries relating to inexpensive mass-production of thick-film sapphire coatings (one mm and greater) vacuum-sputtered onto all-acrylic lens elements combined with advanced ray-tracing software HAVE NOW BROUGHT the ability to make Zeiss and Leica-quality Cinema-grade prime and zoom lenses that cost one-third to one-tenth the cost of those vaunted brands and are HALF-THE-WEIGHT!
One-Third to One-Tenth the cost of Sony G-series, Canon L-series, Leica Summi/Lummi-series and Zeiss Master Prime/Otus at Half-The-Weight at T1.0 to T2.0
A global public announcement with global retail and pricing information is coming soon ..... Get Ready!
V
Refraction is a good thing or a bad thing depending upon application. In terms of Cinema-grade prime lenses and zoom lenses equivalent to the quality of Zeiss Master Primes or Leica Summilux-C, high refraction indexes are a GOOD THING allowing a lens designer to grind and shape lenses so that MORE LIGHT is gathered and re-directed towards the CMOS/CCD image sensor. This means brighter, clearer imagery with less object edge fringing and unintended distortion.
If one uses advanced software that ray-traces each light ray path towards each photosite on an imager, one can design BOTH prime and zoom lenses such that T1.0 to T2.0 lenses can be made that are TRULY NEUTRAL AND SHARP with ALMOST NO coma, chromatic aberration, colour shifting or prismatic effects! By coating the outer and inner layer of an optical grade all-acrylic lens element with Sapphire (aka clear Aluminum Oxide), the layer density and the optical diffraction and refraction path differences between the two substances CAN be accounted for in software that then gets translated to real world light gathering in variable conditions ranging from Golden Hour Sunset/Sunrise to Harsh Overhead Noon Sunlight to Gloomy Cloud-cover days and near midnight dark conditions.
The key issue being outlined in this post is that very recent discoveries relating to inexpensive mass-production of thick-film sapphire coatings (one mm and greater) vacuum-sputtered onto all-acrylic lens elements combined with advanced ray-tracing software HAVE NOW BROUGHT the ability to make Zeiss and Leica-quality Cinema-grade prime and zoom lenses that cost one-third to one-tenth the cost of those vaunted brands and are HALF-THE-WEIGHT!
One-Third to One-Tenth the cost of Sony G-series, Canon L-series, Leica Summi/Lummi-series and Zeiss Master Prime/Otus at Half-The-Weight at T1.0 to T2.0
A global public announcement with global retail and pricing information is coming soon ..... Get Ready!
V
