Hitech 4 x 4" PROSTOP Neutral Density 2.4 Filter

Hitech 4 x 4" PROSTOP Neutral Density 2.4 Filter

Hitech 4 x 4" PROSTOP Neutral Density 2.4 Filter

B&H # HI100NDPS2.4 MFR # HT100NDPS2.4
Hitech 4 x 4" PROSTOP Neutral Density 2.4 Filter

Hitech 4 x 4" PROSTOP Neutral Density 2.4 Filter Pro Stop Filter

Pro Stop Filter

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Product Highlights

  • Used For Extreme Neutral Density Effects
  • Helps Create Special Effects and Blurs
  • Permits Use of Wide Apertures
  • Helps Control Depth of Field
  • Can Be Used with Other Hitech Filters
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  • 1Description

The 4 x 4" PROSTOP Neutral Density 2.4 Filter from Hitech is used when you need something to reduce your exposure by 8 stops. This unique and powerful filter will now permit you to easily "blur" images such as moving water, cars, sports and other subjects. The effect of this filter permits you to use much slower shutter speeds as well as wider lens apertures.

You can even combine this filter with other filters such as graduated neutral density filters to achieve additional special effects.  The 4 x 4" format gives you the freedom to use the PROSTOP with many different lenses and is made to exacting standards. It is best used for outdoor, nature and location photography. The PROSTOP is designed with a special rubber gasket surrounding the filter to help prevent any ambient light from intruding into the image.

Allows you to use a much slower shutter speed or wider lens aperture
This filter will permit you to "blur" moving objects such as water, rivers, cars, etc
Increased exposure times open up a whole new vista of photographic potential
Hitech filters are made by Formatt, a company with three generations of professional filter-making experience produces every filter to the highest technical standards. The finest materials, together with state of-the-art production technology have resulted in a standard of optical excellence unmatched anywhere else

Neutral Density Filters Have Four Main Uses

To enable slow shutter speeds to be used, especially with high speed ISOs, to record movement in subjects such as waterfalls, clouds, or cars
To decrease depth of field by allowing wider apertures to be used, which helps separate subjects from their background
To decrease the effective ISO of high speed film (above ISO 400) and allow it to be used outdoors in bright situations
To allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand or other bright scenes which could cause overexposure
In the Box
Hitech 4 x 4" PROSTOP Neutral Density 2.4 Filter
  • Warranted Against Manufacturer's Defects
  • Table of Contents
    • 1Description
    Type PROSTOP
    Size 4 x 4" (100 x 100mm, 1.5mm thick)
    Grade 2.4 (8 stops)
    Filter Factor Transmission = 0.4%
    Multi-Coated Not Applicable
    Rotating Not Applicable
    Effect Reduces ISO by 1/256
    Application Nature, outdoor photography
    Using high speed ISOs in bright light
    When exaggerated special effects like "blurs" are desired
    Color Temperature Not Applicable
    Construction CR39 resin
    Packaging Info
    Box Dimensions (LxWxH) 4.7 x 4.7 x 0.6"

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