AIR FILTER AC

RainbowImaging 77mm Adjustable Fader ND Filter Neutral Density (ND2 - ND400) Multi-Coated Japan

Neutral Density (ND) filters can reduce the intensity of light without appreciably changing its color. Classic ND filters have different f-stop reduction numbers and transmittance thus generated can be applied for different shooting conditions, such as portraiture, water falls, etc. This innovative item brings great innovation of the filter industry. Through the polarization angle modulation (rotate the filter ring when operating), this lens can change the luminous flux substantially with freedom, reducing the ND number from 2 to 400! It can easily replace dozens of all grade of density ND gray filters The filter is made of two pieces of high polarizer (HPL) which has above 99.7 polarization and a precision rotary of the wide-angle lens ring. Please note the glass of this filter is made in Japan, and it is multi-coated. (a single coated will sell at better price)..

I have buy welding glass than I took it to local glassmaker he cut properly circle and this is it ND filter for about 3$ include an old 77mm filter. The filter factor is 16,5 to 17 on analog film use is filter factor 22-23 :P

Got a new toy the other day - a "B+W 110 (3.0) SH NDx1000 77mm ND Filter"
so decided to go out and have a play with it. Here's my first few attempts.

Polaroid filters continue the brand's long legacy of superior optical solutions. All our filters are carefully formulated to ensure consistent color and accuracy throughout the entire surface of the glass. Why? Consistent color means consistent high quality results. We know that a poorly made filter makes a great lens and camera worthless, that's why the our frame rings are constructed of special alloys that won't expand or contract over time or due to temperature extremes-it's also why we back our filters with an 10 year warranty-because we engineer them to last.

Like all Polaroid optics, Polaroid filters are precision manufactured to the most demanding of tolerances. This ensures consistent high quality results even after years of use.

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