Looks like the folks at LockCircle are expanding their product line – they've just sent us this press release about new filters!
LockCircle Press Release
LockCircle is announcing a new family of PRIME CIRCLE professional filters to offer to filmmakers, videographers and photographers a complete line of cost-effective 4 X 4″ and 4 X 5,65″ filters with high grade professional quality without compromise.
PrimeCircle filters are diamond cut from German Ultra-White optical glass, the best quality solution for modern high resolution lenses!
LockCircle Press Continued
The parallel relationship between front and rear surfaces (important for the best optical performance) is verified with a laser interferometer and a densitometer is used for testing consistent density. To check proper light transmission is also used a spectrophotometer!
Two sizes are available right now: 4 X 4″ and 4 X 5,65″ in a full range of Technical, Diffusion and ND Grad filters for the modern digital production needs.
In the Technical section are available the IRND X-FS Extended Full Spectrum, optimized for digital sensors and reformulated with nearly flat attenuation of both visible spectrum light and infrared light, the classic ND filters, Hot-Mirror, Circular and Linear Polarizers.
In the Diffusion section are availbale the Black X-Mist and White X-Mist series designed to add “magic organic” to every digital “rasor edge” shot.
The ND Grad section has the basic “hard and soft” edge graudated filters important to cover several tricky light conditions or adding power and control to landscapes shots! ND Grad are often not only used to control high contrast outdoor scenes but used to design sophisticated framings.
For more information, visit Prime Circle Professional Filters
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(cover photo credit: snap from the Press)