A reflection can describe a surface or hide the detail behind it. The REFLECTLENS RFL-CPL circular polarizing filter helps you adjust reflections from non-metallic surfaces such as glass and water. For car and travel photography, that gives you another decision to make while shooting: how much reflection belongs in the image?
A CPL is designed for reflection control rather than ghosting, diffusion or starbursts. Use it when you want to manage what you can see through or beneath a reflective surface.
What Does a Circular Polarizer Do?
RFL-CPL can reduce glare on water and glass and can deepen blue skies in suitable sunlight. The result depends on your angle to the light and the surface. Rotate the filter while looking through the viewfinder or live view to see what changes.
The strongest setting is not always the most useful. You may want to reveal an interior while retaining enough reflection to show the shape of a window. Make the decision by looking at the whole photograph.
| Scene | Possible purpose | Check before shooting |
|---|---|---|
| Car windows | Reveal the interior or retain part of the surrounding reflection | Inspect other windows after selecting a setting |
| Water | Explore detail beneath or reflected on the surface | Compare the view as you rotate the polarizer |
| Foliage | Reduce distracting surface reflections where the light allows it | Keep the appearance of the whole scene in mind |
| Blue sky | Explore a deeper blue under suitable sunlight | Watch for uneven darkening in wide compositions |
Photographing Cars Through Glass
The RFL-CPL gallery includes views of classic cars and their interiors. In the supplied comparison images, reflections on the glass change, making different parts of the interior easier to see. These are useful references for deciding what to inspect on your own shoot.
Begin with the windscreen or side window that matters most to the frame. Rotate the filter slowly and watch that area. Then inspect the rest of the vehicle: a position that improves one window may not affect every reflective surface in the same way.
Move the camera if necessary. The polarizer is one control, and your viewpoint is another. Check both before settling on the shot.
Decide What the Reflection Contributes
Before trying to reduce glare, identify the detail you want to reveal. It could be a steering wheel, a person inside the car or an object behind a shop window.
Then make two versions with different filter positions. In one, favour visibility through the glass. In the other, retain more of the surroundings. Compare which image tells the story more clearly. Removing the maximum reflection is a choice, rather than a requirement.
Water, Foliage and Travel Scenes
The same reflection-control principle can help when water glare obscures detail or when reflections on leaves dominate a scene. Look at the surface as you rotate the filter and decide which appearance you prefer.
A polarizer can also change the appearance of blue sky, with the effect depending on your direction relative to the sun. Check wide compositions carefully: the sky may darken unevenly across the frame. Reframe or use a less pronounced setting if that pattern distracts from the landscape.
For travel photography, take a moment to compare the image with and without the filter. A scene with reflections that you like may already be doing what you want.
How to Set Up RFL-CPL
- Choose your composition and identify the reflection you want to adjust.
- Fit the correctly sized filter securely without forcing the thread.
- Rotate the polarizer while watching that reflection in live view.
- Check other windows, water or sky areas before choosing a position.
- Recheck exposure and focus, then take the photograph.
- If you change viewpoint, inspect the polarization again.
A polarizer reduces the light reaching the camera, so evaluate exposure after fitting it. In low light or with a moving subject, check that your shutter speed still suits the photograph. Do not assume the settings from the unfiltered frame will remain suitable.
What a CPL Cannot Guarantee
It will not remove every reflection from every angle. Non-metallic surfaces are the main target; a car also contains materials and curves that respond differently. If the result is incomplete, reconsider your viewpoint and lighting rather than expecting one filter setting to solve the entire scene.
A CPL also serves a different purpose from an ND filter. Although it absorbs light, choose it for polarization. If your goal is a particular reduction in exposure, evaluate an ND filter for that task.
RFL-CPL FAQ
Should I leave the polarizer on all the time?
Use it when its reflection-control effect helps the scene. Otherwise, removing it avoids an unnecessary reduction in light.
Will the same setting work after I move?
Not necessarily. Your relationship to the surface and light changes with your viewpoint. Check the result again.
Can I use RFL-CPL for video?
Check the effect in live view and test the planned camera movement. Reflections can change as the camera or subject moves, so review a short take before recording the sequence.
Explore RFL-CPL and use our lens filter-size guide before ordering. For background on polarization, Nikon's guide to using polarizing filters explains the general principle.
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