The ClearWhite 4 x 4" ClearWhite White Balance System is an over-the-lens filter to help obtain proper white balance settings in-camera regardless of the light conditions you are working in. By attaining proper white balance in-camera, you can avoid potential image degradation that can occur if heavily manipulating an image's color balance during post-production. By placing this filter over your lens and pointing at the main light source, you can create custom white balance settings that are accurate to within +/- 50K of completely neutral. The diffuse quality of this filter is able to account for the actual color of the light versus the color of the subject matter itself, which is often a consequence of using a camera's auto white balance settings. Additionally, this filter can be used to identify a specific lens' vignetting and illumination properties and aid you in creating an LCC (Lens Cast Correction) profile for your specific lenses. This translucent filter measures 4 x 4" / 101.6 x 101.6mm and has a circular opening of 2.5" / 63.5mm to accommodate the use of standard diameter lenses. Even though the circular opening of the filter is 63.5mm, it is compatible with lenses with filter diameters ranging from 25mm to 95mm.
Also included with the ClearWhite System is an 18% neutral grey card, which enables you to select a precise, constant tone from which to further obtain proper color or tone balance. This 5 x 8" / 127 x 203.2mm polystyrene card has a white backing and a non-reflective grey surface for use in a variety of lighting conditions.
- ClearWhite White Balance Filter
This filter is placed over your lens in order to make a custom white balance setting depending on the lighting condition you are working in. By pointing your camera with the ClearWhite filter over the lens at the predominate light source, a custom setting can be made and employed for proper white balance within the given scene. This highly diffuse filter is able to account for the color of light striking the subject matter versus the actual color of the subject itself, resulting in a more neutral appearance with colors remaining their respective values within +/- 50K. This diffuse quality also enables this filter to be used to determine the amount of vignetting occurring with a particular lens or specific aperture setting, and can also be used to highlight any dust or spots on your sensor.
This filter is constructed from acrylic with a satin coating to help prevent reflections from interrupting white balance readings. The backside of the filter has soft black foam to prevent damage or scratching when used on your lens while also eliminating possible reflections from behind the camera.
- ClearWhite Neutral Grey Card
- This grey card is constructed from polystyrene and guaranteed to fall within precise color tolerances in accordance with the GretagMacbeth neutral grey patch standard. This card features one surface covered in 18% neutral grey and the other in white. The grey surface has an extremely flat, non-reflective quality enabling its use in a variety of lighting conditions. The card measures 5 x 8" / 127 x 203.2mm; large enough for use in various shooting situations but small enough to maintain portability.
- ClearWhite System
- The ClearWhite System contains both the white balance filter with neck strap and grey card as well as a complete instruction guide that includes charts and white balance strategies for more effective use. A quick start guide is also included for more immediate usage.