Miview VND range from ND2 (-1EV) to ND400 (-8 2/3EV), so even when under the broad day light, long exposures are still feasible, making eliminations of moving images and photographing dream-like ocean waves and images of flowing water doable. Plus, the flexible range also makes it convenient for large-aperture and shallow depth of field photographing.
Testings on Glass Surface Flatness
PV Values : The overall flatness-oriented peak-to-valley ratio
1 wave= 0.6328um
Miview filters can be stacked up to ten pieces per time; images will still be clear even after reflecting through forty optical glasses and twenty layers of optical materials.
(Side note:testing machine resolution ranges between 20 to 22)
Surface water drop contact angle is higher than 110 degree (proof of an excellent waterproof ability), and after a thousand times of abrasion testings, the degree of water drop contact angle is still higher than 100 (proof of an excellent abrasion resistance).
Compression Strength 53.04kgf
The lens cap and hood can be attached.
Filters that pass completely stringent tests
Miview VND filters utilize multi-layer nano coatings even at the internal parts so fine that hardly observable.
Comparing to the world-famous top-tier brands in the world, the optical quality of Miview VND is, in terms of glass surface evenness not any less excellent than German and Japanese well- known brands. The engineer of Miview utilized ten filters to photograph which was consisted of forty pieces of optical glasses and twenty layers of optical materials (linear and circular polarizer) and tested with a standard ISO-12233 resolution pattern,. for which outstanding in sharp- and clearness in resolution is observed as result.
|Thickness||7.95mm ( Aluminum )|
|Color shift||L : 64.48 a : -2.25 b : 5.77|
|Multiple coating||Four sides,total 36 layers|
|Water drop contact angle||>110°|
|Compression strength||53.04kgf ( ∅82mm )|