Astrophotography Part 6 of 6: Reducing Image Noise

Tips for Reducing Noise

By K David in Articles and Tips on Aug 11, 2017

High-quality digital cameras with good high-ISO performance combined with fast, high-quality optics from makers like Pentax, Samyang, Sigma, and Tamron are taking astrophotography out of the enclaves of astronomers and putting it in the hands of hobbyists, too. This six-part series examines various elements of astrophotography.

This article looks at ways to reduce noise in digital images. Using best capture practices, software, and editing techniques, a significant amount of noise can be removed from overnight photos.

To revisit the rest of the articles in this series, here are links and their subjects:

Image Composition: Converging Lines

Bringing it all Together with Converging Lines

By K David in Articles and Tips on May 10, 2017

In this ongoing series, we examine different photographic techniques, their use, and how to achieve them. This article looks at converging lines and discusses how to use them well, poorly, and to achieve different goals with your photography.

Image Composition Guide: Subject Isolation

Using Selective Focus to Define Subjects

By K David in Articles and Tips on May 5, 2017

In our ongoing series providing tutorials on photographic techniques, this article examines how to use your gear to achieve subject isolation. This article defines what it is, examines why it occurs, and presents creative examples that exhibit subject isolation in use.

Tell us About Your Photo, Lauri Koivuluoma

Ephemeral Finnish Landscape

By K David in Columns on Jan 18, 2017

Each month we pick a forum photographer with a stand-apart image in a non-contest thread. This article will allow the photographer to tell us a bit about their photo and themselves, providing a larger context to the image.

Stickl posted the first K-1 photo we've selected for this series, a fantastic shot capturing soft, morning light and fog moving through an evergreen forest in the thread Post your K-1 pictures. Thank you, Lauri, for taking part in this ongoing series and for this fantastic example of Pentaxian nature and landscape.

Ephemeral Finnish Landscape (click to enlarge) | Stickl

Astrophotography Part 5 of 6: Working in Post

The Time-consuming Part

By K David in Articles and Tips on Nov 2, 2016

This article looks at some basic software and editing approaches related to astrophotography, including discussions about and samples of specific photos I've shared over the course of this series. Toward the end you will also find resource links for a number of excellent sources on capture and processing techniques.  Note that this article is not an in-depth exploration of niche astrophotography editing techniques. Many other resources, both here on Pentax Forums and elsewhere, cover that well. Also, the niche editing techniques are not generally intended for DSLR users.

Don't miss parts 1-4 of our astrophotography series before reading on!

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