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Similarly to the issue with shooting panoramas, wide-angle lenses do not allow for an even polarization. When using a CPL filter with this type of lens, you are most likely to get dark patches on the sky and vignetting.

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Sometimes, you may want to include some reflections for artistic effect. For example, if you're aiming to capture reflections of coloured light, such as sunlight dancing on water, it's better to skip the polarizer. These reflections can add interest and depth to your images, and the filter will just ruin the artistic part.

Using a circular polarizer filter effectively requires a bit of know-how and practice, but it's not as complicated as it might seem at first glance. Just follow these steps:

When shooting in low light or at night, the reflections usually are not a problem. On the contrary, you may need to add more light to capture the details of the scene. With the circular polarizing filter reducing the light by around 2 stops, you risk taking an underexposed image. It’s not a good idea to use a CPL filter in the blue hour either.

When capturing panoramic scenes, using a circular polarizer can lead to uneven polarization and darkened parts of the image. If you want to maintain consistent brightness and colour saturation across the panorama, it's best not to use the filter.

The polarization is most effective when the light source is at a 90-degree angle to your shooting direction, so if the sun is right behind you there won’t be much effect.

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The most common case of using a circular polarizer is for removing reflections. When photographing through windows, glass or other reflective surfaces, a CPL filter can help to eliminate them and capture what’s behind the glass with clarity.

Remove any lens caps and hoods and after carefully unscrew the filter from your lens, making sure not to force it. Keep your filter in a protective case to prevent scratches and damage when not in use.

A circular polarizing filter intensifies colours making them a bit darker and richer. The photos taken with it have a better contrast.

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In 1981, Illumination Systems was set up as an independent corporation ending the 44 year association with the Blynn Company.

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We trace our beginnings back to the W.F. Blynn Company that was established in Colorado in 1937 representing housewares and lighting. As the lighting component continued to grow over the ensuing years with the addition of brands, such as Halo Lighting in 1962, it became apparent the need to start creating separate channels for the business. This occurred in 1972 with the launch of Illumination Systems as a DBA of the Blynn Company.

Jump to: How to use a CPL filter When to use a circular polarizing filter When not to use a polarizing filter Polarizer & different types of photography Tips on using a circular polarizer filter

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CPL filters work best when there is a lot of light. They are incredibly versatile and can help you take better photos in various situations. Reducing reflections The most common case of using a circular polarizer is for removing reflections. When photographing through windows, glass or other reflective surfaces, a CPL filter can help to eliminate them and capture what’s behind the glass with clarity. Shooting water scenes When you want to shoot a landscape with a sea, river or lake where you can see through the water, a circular polarizing filter is something that you need. By reducing reflections on the water’s surface, the filter will reveal the submerged textures and details. This can make a photo more interesting and deep. A CPL filter will also remove reflections from wet stones and rocks allowing to capture their true colour without highlighted spots. Capturing photos of foliage Circular polarizing filters reduce glare and reflections also on the leaves. This enriches the colours of foliage, flowers and other vegetation. As a result, greens, yellows and reds become more vibrant and intense. Photographing the sky When shooting landscapes with the sky, a circular polarizer can be used to deepen the blue hues of the sky, making the sky more vibrant and clouds stand out. Enhancing colours A circular polarizing filter intensifies colours making them a bit darker and richer. The photos taken with it have a better contrast. When NOT to use a polarizing filter Even though a CPL filter is a really handy and useful tool in photography, in some situations it’s better to leave it off. Keeping the reflections Sometimes, you may want to include some reflections for artistic effect. For example, if you're aiming to capture reflections of coloured light, such as sunlight dancing on water, it's better to skip the polarizer. These reflections can add interest and depth to your images, and the filter will just ruin the artistic part. Hall Abendrot at sunset captured by Florian Orth Shooting in low light/at night When shooting in low light or at night, the reflections usually are not a problem. On the contrary, you may need to add more light to capture the details of the scene. With the circular polarizing filter reducing the light by around 2 stops, you risk taking an underexposed image. It’s not a good idea to use a CPL filter in the blue hour either. When shooting with the sun behind you The polarization is most effective when the light source is at a 90-degree angle to your shooting direction, so if the sun is right behind you there won’t be much effect. Shooting panoramas When capturing panoramic scenes, using a circular polarizer can lead to uneven polarization and darkened parts of the image. If you want to maintain consistent brightness and colour saturation across the panorama, it's best not to use the filter. Using wide-angle lenses Similarly to the issue with shooting panoramas, wide-angle lenses do not allow for an even polarization. When using a CPL filter with this type of lens, you are most likely to get dark patches on the sky and vignetting. Using polarizing filters in different types of photography Now that you know what effects you can achieve with a circular polarizing filter, let’s see how they can help in different types of photography: Landscape photography: Rich blue skies, transparent water bodies with aquatic life, vibrant colours – that’s what CPL is used for. Architectural photography: Eliminate annoying reflections on glass buildings to capture clean and crisp shots of urban scenes. Product photography: Remove unwanted reflections from the products to show their true look. Particularly useful when shooting jewellery and watches. Car photography: By reducing glare and reflections from shiny surfaces with a CPL filter, you can capture the true colour and texture of the car. Outdoor portraits: Reduce glare from the skin and improve the overall contrast of the image. Tips for effective use of circular polarizing filter Avoid over-polarization: Always check how the image looks like on the screen and adjust the filter before shooting. Too much polarization can make your skies look unnaturally dark. Adjust the filter: Lighting conditions can change rapidly, especially when shooting outdoors. Do not forget to adjust the CPL filter accordingly as you move from one scene to another or as the sun changes position throughout the day. Check the settings: A circular polarizing filter reduces the light entering the lens by around 2 stops. You may need to compensate for the correct exposure. Practice, practice and more practice: Experiment with different settings, scenes, and filter combinations to find what works best for your unique style. More about CPL filters: What is a CPL filter and how it works Shooting portraits with polarizers Polarizing filter in landscape photography

Circular polarizing (CPL) filters are used to remove reflections, glare and intensify colours improving the contrast. They can make a big difference in your photography, make images vibrant and with clear details. Learn everything about how to use a circular polarizing filter effectively, when to use them and when it’s better to shoot without a CPL filter.

When shooting landscapes with the sky, a circular polarizer can be used to deepen the blue hues of the sky, making the sky more vibrant and clouds stand out.

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Circular polarizing filters reduce glare and reflections also on the leaves. This enriches the colours of foliage, flowers and other vegetation. As a result, greens, yellows and reds become more vibrant and intense.

Even though a CPL filter is a really handy and useful tool in photography, in some situations it’s better to leave it off.

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Distortion is a flaw in the image (aberration) of an optical instrument such as a telescope, which does not affect the focus but changes shapes, e.g., forming ...

Now that you know what effects you can achieve with a circular polarizing filter, let’s see how they can help in different types of photography:

When you want to shoot a landscape with a sea, river or lake where you can see through the water, a circular polarizing filter is something that you need. By reducing reflections on the water’s surface, the filter will reveal the submerged textures and details. This can make a photo more interesting and deep. A CPL filter will also remove reflections from wet stones and rocks allowing to capture their true colour without highlighted spots.