Product photos
Size
EOS-FF(Canon Full Frame), EOS-C(Canon APS-C), NK-FF(Nikon full frame)
1.25
2
Specification
Tpeak: T>90%
Spectrum: 380-750nm
Optical Density: Light pollution emission is blocked 90%
Surface Quality: 60/40
Transmitted Wavefront RMS: /4
Parallelism (arcsec): 30s
Reference spectrum
Manufacturing Technique
Fine-optically polishing for double-sides Ensure accurate /4 wavefront and <30 seconds parallalism over the both surfaces
Ultrasonic wave cleaning substrate with purified water Cleanup by 13 purified water tank to remove inpurities and dust effectively
Iro source assisted coating For durability and resistance to scratching, as well as stability on CWL (central wavelength) no deviation affected by temperature change.
Constantly stringent quality testing processes Each filter was tested by spectrophotometer and laser interferometer testing spectrum and wavefront to ensure market filter is qualified product
Comparison photo
Gallery
Packaging details
Silver cardboad box
Plastic PP box
Imported high pressure EVA case lining
Warm Prompt
About Color: Light, computer display and other reasons, pictures and objects may slightly chromatic aberratio (color fifference), please refer to the material item
About Coating: Interferential filter to change surface color depending upon light and movement. Please in kind prevail.
About Product Object: All of specifications change in order to improve product quality. We ask your understand if any update informations publish delay.
About Product Overview: Please note that this series of filter as same as specifications, processing technic, test methods. It is only size difference.
