If you’re just starting out with photography, the relationship between ISO, aperture and shutter speed is one of the crucial things to learn. However, it can be difficult to grasp if the concept is new to you. In this great animated video from Apalapse you’ll easily learn the relationship between the three parameters and how they affect the exposure and the look of your images.
With each passing year, cameras are getting better and better at keeping digital noise to a minimum. Despite this, there are still times when you need to shoot at a high ISO and will inevitably end up with an amount of noise you aren’t pleased with.
Thankfully, this can be fixed in post production. The tradeoff though, is usually that details are lost in the image due to the smoothing of the noise.