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Heliopan 25.5mm Linear Polarizer Filter

BH #HEP25.5 • MFR #725539
Heliopan
Heliopan 25.5mm Linear Polarizer Filter
Key Features
  • Minimize Reflections and Glare
  • Reduces Haze and Blue Cast in Landscapes
  • Enhances Color and Tonal Saturation
  • 25.5mm Front Filter Threads
The Heliopan 25.5mm Linear Polarizer Filter helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. This results in a noticeable increase in the saturation of skies and foliage, as well as clearer imagery when photographing in hazy conditions. A linear polarizer differs from a circular polarizer in that it does not supports use of a camera's autofocus or auto exposure functions; it is best suited for use with manual cameras, such as view cameras, that are not dependent on internal mechanisms to determine focus or metering settings.
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Heliopan Linear Polarizer Overview

The Heliopan 25.5mm Linear Polarizer Filter helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. This results in a noticeable increase in the saturation of skies and foliage, as well as clearer imagery when photographing in hazy conditions. A linear polarizer differs from a circular polarizer in that it does not supports use of a camera's autofocus or auto exposure functions; it is best suited for use with manual cameras, such as view cameras, that are not dependent on internal mechanisms to determine focus or metering settings.

The front and rear surfaces of the filter both feature a single anti-reflection coating. Each coating helps to increase light transmission by reducing reflections, scattered light, and ghosting. Additionally, they offer protection to the filter substrate while helping to keep the glass clean for longer than uncoated glass.

This Heliopan filter is constructed from Schott glass for increased optical clarity and color fidelity. It features a brass filter ring for durability as well as jamming prevention.

Reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface.
Arrange and filter directionally polarized light perpendicularly to the reflected light allowing for the absorption of much of the light.
Lessens haze in distant landscapes and provides more saturated, vivid colors.
Strongest effect when used at a 90° from the sun.
Single coatings on both the front and rear offer protection to the glass and help to improve light transmission and image quality.
Constructed from Schott glass for optical clarity.
Brass filter ring helps to prevent jamming and provides additional strength.
Dual threading with 25.5mm front filter threads permits combining with other filters.

Heliopan Linear Polarizer Specs

Filter Type
Linear Polarizer
Exposure Reduction
1.6 to 2-Stop
Size
25.5 mm Rear Filter Thread 
Rotating
Yes
Front Accessory Thread / Bayonet
25.5 mm
Coatings
Single-Coating
Filter Material
Glass
Ring Material
Brass
Packaging Info
Package Weight
0.1 lb
Box Dimensions (LxWxH)
3.3 x 2.7 x 0.5"

Heliopan Linear Polarizer Reviews

See any errors on this page? Let us know

What size lens cap fit this filter?

What size lens cap fit this filter?
Asked by: Tony
A 48mm lens cap will fit this filter.
Answered by: Boyd H
Date published: 2023-05-17

With a mirrorless Micro-4/3rds camera, do you ...

With a mirrorless Micro-4/3rds camera, do you need to use a circular polarizer? Or will a linear one be effective?
Asked by: Kurt
Circular polarizer filters are recommended for use if you will be using autofocus to focus your lens, as linearly-polarized light can confuse autofocus sensors and cause autofocus errors. However, if you will be focusing your lens manually, you may use a linear polarizing filter.
Answered by: Manzell L
Date published: 2021-06-03

Thickness? Need 30.5 mm polarizer that will fit ...

Thickness? Need 30.5 mm polarizer that will fit in filter drawer of 600 mm catadioptric. Filter needs to be 7 mm thick.
Asked by: Allan
I purchased one through Amazon, turned out to be the same thing, Heliopan #730539. Fits the 30.5mm thread in the filter tray ok, but the thickness is 8 mm, so doesn't work. It is 6 mm from outer edge of one knurled ring to the outer edge of the other. This is the rotating part. The mounting threads are 2 mm deep, so overall width is 8 mm.
Answered by: Allan
Date published: 2023-08-21

I have a Nikon Coolpix L340. I am aware that it's ...

I have a Nikon Coolpix L340. I am aware that it's lens is 35mm. Is this polarizer applicable to that particular camera?
Asked by: scott
The Nikon COOLPIX L340 digital camera does not have filter threads on the lens. So you cannot use any filters on this camera.
Answered by: Lawrence C
Date published: 2020-03-25

How many stops does this reduce the exposure?

How many stops does this reduce the exposure?
Asked by: Jason
1.5 to 2 stops.
Answered by: Rob
Date published: 2020-05-22
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