One question I'm asked a lot is "Where does all the noise come from when my camera is set to ISO 100?" The answer is simple. The photograph is underexposed. What is ISO? Grain vs. noise Back in the film days, the ISO (or ASA as it was called then) setting was the sensitivity of the film in the camera. While grain existed in every image, high ISO numbers produced more grain because the film had to have bigger chunks of light gathering chemistry. Today, the same idea applies. ISO in digital cameras refers to the light sensitivity of the … [Read more...] about Photography 101: How does noise happen at a low ISO?
HDR (High Dynamic Range) processing of your photos by its nature can result in a lot of noise or graininess in your final image. While Macphun's new Aurora HDR 2018 for PC's does a great job overall reducing noise, there are still times when noisy areas appear in your processed HDR. This can be caused by many reasons, but most commonly it's due to your settings in camera (such as shooting at too high of an ISO) or any image processing you have done to your images before merging them in Aurora (such as exposure adjustments). Regardless of the … [Read more...] about How to Remove Noise with a Luminosity Layer in Aurora HDR 2018
Photographs are wonderful things, and one of their amazing characteristics is the detail we can see in a picture. I'm pretty observant of details in face to face contact, so I enjoy the fact that my camera can record those details with great clarity and I can share them with others. However, digital noise sometimes obscures the detail and can create distracting color specs that I find really frustrating. In fact, when I first started photography, I wouldn't raise my ISO above 400 for fear that noise would ruin the images. I'd like to share with … [Read more...] about Hate Noisy Pictures? This May Help…
Grain is a word used in film photography to describe the fineness of detail a film or paper is capable of capturing. Landscape photographers typically want the finest detail possible, which comes from fine grained films. Documentary photographers and journalists may need faster speeds (higher ISOs) and will compromise detail for speedier films that have more grain. In digital, noise is the compromise we make for shooting faster ISOs, and the latest cameras biggest improvement is usually related to the detail maintained even at very high speed … [Read more...] about 3 Reasons to Add Grain in Lightroom