ISO is one of the three major exposure settings in the exposure triangle of a digital camera. Of the three: shutter time, f/number, and ISO, it is ISO that is probably most misunderstood. Even more so than f/number. In fact, it is a common misconception that higher ISO settings will cause images to be noisier. In fact, the opposite is often true. Wait, what?
That’s right, higher ISO settings alone do not increase image noise and higher ISOs can even be beneficial to low-light photography. In this post, I talk about the craziness surrounding ISO settings, how ISO actually affects exposure and how to find the optimal ISO setting on your camera for astrophotography.
Continue reading “How to Find the Best ISO for Astrophotography: Dynamic Range and Noise”
In this short video, travel with Lonely Speck to Alabama Hills, California to demo the SharpStar2 in the field to achieve perfect critical focus on the stars.
Continue reading “Critical Focus at Night with the SharpStar2”
Coming to the 2016 Lonely Speck Meetup? Join Lonely Speck creator Ian Norman for a 2.5-hour session of astrophotography post-processing, group photo sharing, and Q&A.
Continue reading “Lonely Speck Post-Processing Workshop: July 31, 2016”
In this video tutorial, I walk through my method of capturing and processing a photograph of the Milky Way from the window of an airplane.
Continue reading “Photographing the Milky Way from an Airplane”
In this video tutorial, Tyler Sichelski walks through a novel method for removing coma aberration from astrophotography using Adobe Photoshop.
Continue reading “Removing Coma Aberration in Adobe Photoshop: Astrophotography Tutorial”
Focusing at night can be difficult. In this tutorial I review some of my favorite tips and techniques for focusing a camera lens in the pitch dark and I introduce a tool to make the process even easier.
Continue reading “Focusing at Night: A Tutorial”
In this video tutorial I walk through a technique for reducing noise and improving image quality by combining multiple astrophotography exposures. I also demonstrate what to do when auto-alignment tools, like Photoshop’s Auto-Align Layers function, fail to properly align your images.
Continue reading “Milky Way Exposure Stacking with Manual Alignment in Adobe Photoshop”