It's been a while since I posted a tip. I thought ISO might be a good one this time around with spring here and more and more outdoor activities get started. I'm still planning on lighting tips but I need to learn more on that first.
ISO can be thought of these days as the another variable in your exposure settings. In today's modern DSLRs it has become a very useful setting. ISO is the sensitivity of the sensor to light just as ISO or ASA in film is the sensitivity to light. The more sensitive the sensor is set the faster the shutter speed can be which will affect what aperture you can use as well.
Of course you usually want the lowest possible ISO setting to keep your noise levels down to a minimum but there are times where you just need to raise the ISO in order to keep either the shutter speed you want or a desired aperture.
Be careful though when you choose to raise the ISO. Higher ISO settings are very finicky with proper exposure. If your exposure is not quite right and you have to raise it in post, the noise will really pop out. What I've taken to doing is to slightly over expose the shot and bring it down a bit in post. That hides some of the noise. Of course there is no better plan than to get it right in camera.
Here is a link to my post on the above trick. This trick works great if you don't have a lot of highlight areas that would get blown out by over exposing but if you are not worried about the highlights and it's the only way to get the shot, give it a try.
Here are some examples of higher ISO photos. I'm talking over ISO 1600 here as most cameras and editing software now can handle ISO 1600 well.
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