Breakthrough Filters Light Pollution Cut Filter 67mm

This is a light pollution filter from Breakthrough Filters.
For astrophotography and night cityscape photography, it corrects color tone.
Official Name: Breakthrough Filters
Purchased directly from the official US website (for $169).

*Please see my other listings for various other filters.

Below is translated information from the official website:

■Achieve incredibly sharp star rendering and true color fidelity.
The Night Sky filter is housed in a weather-resistant, robust X4 traction frame, and features highly durable MRC16 and nanotec® coatings for easy and quick cleaning.

■Designed for outdoor photographers.
Artificial light pollution is located in the visible light spectrum approximately between 570-610 nanometers.
Light pollution from artificial sources can reduce the clarity of starlight by up to 50%.
This orange cast weakens the contrast between the stars and the space behind them, turning the background of space, which should appear black, into an orangish hue.

Removing light pollution is essential for capturing beautiful night sky photos. However, finding a shooting location free from light pollution can be very difficult, and sometimes even impossible, depending on the location.

Furthermore, removing light pollution in post-processing is a destructive editing method that degrades image quality.