Here's another example: You're taking some photographs at a wedding reception, which is being held indoors in the late evening. If you can't find something to prop your camera up on, you're going to need to make that choice - depth of field or image quality. If it's late in the day, though, you may lose the shot altogether. As a photographer, you need to decide what's more important to you - depth of field, image quality (sans-noise) or your feet, because if you decide that you don't want to sacrifice depth of field or image quality, you may find yourself hiking back to your car to retrieve your tripod.
#F stop settings iso#
You other alternative is to turn your ISO up to 2000, which will allow you to use f/22 at 1/30th, but then you may have some noise in your image. You might be able to hand-hold your camera at 1/30th of a second, but you have to set your aperture all the way down to f/10 if you want to use that shutter speed. That's way too long, since you left your tripod back in the car. But when you switch to aperture priority you discover that your camera wants to use a shutter speed of 1/6th of a second. You'd like to keep as much of the scene as possible in focus, and you decide to use f/22. In the distance are some pretty, snow-capped mountains and some trees, and in the foreground there's a little stream surrounded by some boulders. Let's look at an example: You're taking a photograph of a meadow. 33::262 by Flickr user WarzauWynn Some examples This photographer had to make some compromises to get this shot: at ISO 6400, there is visible noise, but the high ISO allowed him to use a faster shutter speed of 1/50 and an f-stop of 4.5.That's fast enough for hand-holding the camera, and it gave him enough depth of field to keep the dog's nose and eyes in focus. Take some time to really understand how these three primary settings affect your final image, and then you'll be in a good position to make an educated compromise when you find yourself in challenging situations. A small ISO will create an image with good digital clarity a large ISO will create an image with lots of digital noise. A large aperture (small f-number) will create a shallow depth of field, a small aperture (large f-number) will create large depth of field. A fast shutter speed will freeze the action a slow shutter speed will create motion blur.
In general, the three primary settings on your camera have the following visual effects on your final image: As a photographer, you need to have a very good understanding of what will happen to your photograph whenever you change one of those settings - without that knowledge, you can't decide where you're going to make those compromises. So what that means for you is this: taking photographs is a process of compromise. If you're using a small aperture but you don't want to slow down your shutter speed, increasing your camera's ISO or light sensitivity will make it so you don't need to have that longer shutter speed. The same is true for ISO, which increases your camera's sensitivity to light. When the shutter is open for more time, more light can reach your camera's sensor through that small aperture opening, resulting in a correctly exposed image. A small aperture allows less light to reach your camera's sensor, which means that you need a slower shutter speed. The reason that your camera's primary settings are so dependent on each other is simple mechanics. How aperture, shutter speed and ISO are related