Join Seán Duggan for an in-depth discussion in this video How exposure affects noise levels, part of Enhancing Night and Low-Light Photos with Photoshop.
…Digital noise is a fact of life and photographs taken with higher ISO settings…under low light conditions, fortunately modern cameras are pretty good,…are producing images with very acceptable noise levels even and…incredibly high ISO's the noise levels we see today or…often the huge improvements of the cameras that are only a few years older.…If you are faced with having to shoot at night, or in low light conditions and…you need to use a high ISO setting, there are ways that you can minimize noise in…the camera by ensuring that your images are well exposed.…
Let's take a look at how exposure differences can effect the noise levels in…your photos.…Now of course one way to reduce the need for a high ISO is to use a tripod for…night or low light shooting this will allow you to use a much lower ISO number.…The trade off in that is that with a low ISO especially at…night you're going to have keep rely on longer shutter speeds so…just by way of example if we look at this photograph taken.…In Dresden, Germany.…
In this course, photographer and educator Seán Duggan explores a range of post-processing techniques aimed at expanding your creative options for night and low-light photography—and even "shooting" stars. He'll begin in Camera Raw for general enhancements (white balance, tonal and contrast adjustments, and noise reduction) and then turn to Photoshop to capitalize on its Merge to HDR feature, which can create spectacular high-dynamic-range images. Last, he includes techniques specifically for star photography: stacking layers to create star trails, removing and replacing blurry stars, and using luminosity masks on photos of the Milky Way.
- Using neutral guides to set white balance
- Applying lens profile corrections
- Reducing noise
- Working with 16-bit and 32-bit HDR images
- Stacking layers and combining exposures
- Improving star photography