![PLフィルターの使用方法](http://tokyo-grapher.com/cdn/shop/articles/thumnail_how-to-adjust-pl-filter_3.jpg?v=1558517829&width=1920)
How to use the PL filter
On this page, you can check how to use the PL filter through the structure of the PL filter, the meaning of the "▲" mark on the side, etc.
INDEX
1. PL filter structure
A PL filter is a filter in which a film with fine slits called a polarizing film is sandwiched between two pieces of glass.
![](https://cdn.shopify.com/s/files/1/0024/5032/5622/files/how-to-adjust-pl-filter-1_5.png)
The front of the filter is designed to rotate together with the glass sandwiching the polarizing film. By rotating the polarizing film, you can control the reflected light and shoot .
![](https://cdn.shopify.com/s/files/1/0024/5032/5622/files/how-to-adjust-pl-filter-2_5.png)
2. Meaning of “▲” mark
There is a "▲" mark on the side of the rotating part of the PL filter, which indicates the direction of the slit of the polarizing film .
![](https://cdn.shopify.com/s/files/1/0024/5032/5622/files/how-to-adjust-pl-filter-3_5.png)
If the "▲" mark is facing either upwards or downwards, it indicates that the slit of the polarizing film is facing vertically, and if the "▲" mark is facing either right or left indicates that the slits in the polarizing film are oriented laterally.
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When the "▲" mark is directly above or below -
When the "▲" mark is on the right or left
[Fig.4] The direction of the "▲" mark and the polarizing film when the iPhone is attached
3. How to use the “▲” mark
The rotating part of the PL filter can be rotated more than 360°, but the same effect can be obtained by rotating the "▲" mark half or once as shown in [Fig. It's not a rise .
[Fig.5] The "▲" mark has the same effect even if it is turned in the opposite direction.
When using the PL filter, use the "▲" mark as a mark of how much the filter has been turned, and adjust the effect while checking the effect on the iPhone screen before shooting.