Skip to main content

How to Reduce Noise in Photoshop

[embed]https://www.youtube.com/watch?v=DvZfjh19rio[/embed]

How to Reduce Noise in Photoshop

The best way to reduce noise in an image is to shoot with a low ISO in camera. The camera creates an exposure based on three values - ISO, Aperture, and Shutter Speed. ISO is the only variable that will result in noise. Ideally, one would adjust the shutter speed and aperture (to let in enough light to create an exposure) at a low ISO to prevent image noise.

The best ISO settings to use for lower noise levels are 100, 200, 400 and 800. Anything above that is likely to create noise on the image. Cameras are getting better all the time, and there will come a day when ISO 6400 looks perfectly clean, but until then, keep ISO as low as possible!

Reduce Noise Filter

The first step in removing noise in your image is to use the 'Reduce Noise Filter'. In the 'Reduce Noise Dialog' one can control strength, preserve details, reduce color noise, and sharpen details. The strength of the filter determines how much it reduces noise - go as high as you need to remove noise, but don't over-do it. Bringing the 'Reduce Noise' lower will make the filter more effective, but will also reduce detail in the image - find the balance that works best.

If there is a lot of color noise, use the 'Reduce Color' noise option to remove it. Also, there is an option in 'Advanced Settings' to reduce noise on each color channel individually. 'Sharpen Details' will add artificial sharpening to your image after the 'Reduce Noise' filter is added, so it's best to keep this at zero.

Using the Surface Blur to Reduce Noise

If there is still noise after the 'Reduce Noise' filter is used, adding a Surface Blur may help. The key to using a Surface Blur to reduce noise in photos is to balance the radius and threshold. If the threshold is too low, the image will not be effected. Threshold controls where the blur will stop. It uses differences in tone to find edges, and tries to preserve those edges. The higher the threshold, the more separate elements in the image will blur into each other. The Blur radius determines the area that will be blurred - the larger the radius, the more blur.

It's best to bring both of these values as high as possible without destroying image details.

Check out more free tutorials at phlearn.com

Comments

Popular posts from this blog

C++ Programming Tutorial - How to Install Code::Blocks in Ubuntu Linux - Learn Online

Installing Code::Blocks How do I Install Code::Blocks HOWTO: Installing Code::Blocks 10.05 How do you install Irrlicht on Code::Blocks? How do you install CodeBlock on ubuntu? codeblocks /bin/sh: g++: not found Installing codeblocks on ubuntu Installing Code::Blocks on Ubuntu 10.04?

Google Fight Against Low Quality and Spammy Content

  Google's ongoing battle against spammy and low-quality content in search results is an essential aspect of maintaining the platform's credibility and usefulness. Here are some of the new strategies and policies Google is implementing to combat these issues: Improved Quality Ranking : Google is enhancing its core ranking algorithms to prioritize high-quality and original content while reducing the visibility of unoriginal or spammy content in search results. New Spam Policies : Google is updating its spam policies to address emerging tactics used by spammers. This includes targeting practices such as expired websites repurposed as spam repositories, obituary spam, and other manipulative behaviors. Reducing Unoriginal Results : Google is refining its ranking systems to identify and minimize unhelpful, unoriginal content. This includes pages created specifically to match certain search queries and content that prioritizes search engine optimization over user experience. Scaled C

Beginners MYSQL Database Tutorial # How to install MySQL on Ubuntu/Debian Linux - Learn Online

Installing and Using Mysql on Ubuntu How to install mysql install mysql on ubuntu Searches related to Installing and Using MySQL in Ubuntu installing mysql on ubuntu server installing mysql workbench on ubuntu Installing MySQL Server on Ubuntu Searches related to Installing and Using MySQL server in Ubuntu setting up mysql server ubuntu setting up mysql server linux installing php ubuntu server installing apache ubuntu server installing phpmyadmin ubuntu server installing mysql debian where does mysql install on linux ubuntu install php mysql Ubuntu Linux Install MySQL Server installing mysql 5.5 on ubuntu installing mysql gem ubuntu installing mysql client on ubuntu installing php mysql ubuntu installing apache on ubuntu installing php ubuntu