I'm trying not to make these Sunday tips too complicated. I'm hoping there are some beneficial tips and not just a bunch of mumbo jumbo.
In last week's comments, Mary asked (and I paraphrase) "ISO?? What the hell?"
It's hard to explain how ISO works without also explaining aperture and shutter speed and how they all work together. But I'm going to try. Please feel free to ask questions in the comments if you want more detail on something.
ISO= your sensor's sensitivity to light
Aperture (f-stop)= how much light you allow in to reach the sensor (just like the pupil of your eye)
Shutter Speed= how long you expose the sensor to the light you've let in
Every camera has a base ISO. Canon's is usually 100 and Nikon's is usually 200.
100 is the least versatile and should be used in bright light settings. The bigger the number, the more versatile the ISO. In a low light setting try using ISO 400, 800 or even higher. Keep in mind, though, the higher the ISO the more digital noise or grain you introduce. Most cameras can shoot up to ISO400 with no noticeable grain.
So, in a nutshell ISO is adjusted based on your lighting situation. You always want to try to use the lowest possible ISO for your particular setting. Sometimes that's 100, sometimes 800.
You can use other ways to compensate for low light situations, but they all come with consequences as well:
- Lower your shutter speed to allow the light to expose longer. The problem with this is you may be introducing blur whether it be from your subject or your natural hand shake.
Here's Charlie demonstrating:
Look Ma, no hands!
- Increase your aperture (lower f-stop number). This will give you depth of field and a layered look. However, that's no good if there are multiple subjects that you want to keep sharp. Here my aperture was too high, and when Quinn moved forward the baby behind(my nephew) went blurry with the background.
-Turn on your flash. This will allow you to keep your ISO lower, but results in a flatter image with pin point lights in the eyes instead of the sparkly catch lights of natural light.
And you won't get a shot like this with your flash on:
The small amount of grain was totally worth it.
Beware:
If you're going to play around with your ISO settings from time to time, you MUST make it a habit of checking your settings each and everytime you turn on your camera to start shooting.
There's nothing worse than taking a bunch of pictures and then realizing you forgot to change your ISO.
I speak from experience, unfortunately.
But practice makes perfect. Play around with your camera's manual settings, and before you know it you'll feel right at home with them.
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