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For shallow depth of field photos, use a larger aperture size (i.e. So, if you need to remember one thing, it is this: when you adjust the aperture by just one stop, you either halve or double the amount of light that goes through your camera lens.What is important, though, is that you keep practicing until you familiarize yourself with the different f-stop values, and until you produce the image/s you want.The usual numerical values for the f-stop are 1.4, 1.8, 2.0., 2.8, 3.6, 4, 5.6, 8, 11, 16 and 22.
Each time you increase the ISO to a level, the sensor’s sensitivity is doubled (ISO 100 to ISO 200, ISO 200 to ISO 400, and so on).
This means that you need half the amount of light hitting your sensor for the same exposure. In the same manner, if you want to take a photo of the early evening skyline, you will need to consider that it is already dark, so you will need a high shutter speed to properly capture the image.
For example, if you want more saturation and less noise and more details, go for ISO 100.
If you want less saturation and details, go for a higher number, like an ISO of 400.
Let us look at each element closely and understand how they can help you achieve the right exposure.
The ISO refers to ratings that define the sensitivity level of your camera to light (a more technical exploration can be found here).As such, controlling the aperture or choosing to use the Aperture Priority mode allows you to adjust the amount of light that can get into your camera so that it can either open (widen) or close (narrow).The aperture setting is determined by several f-stop values.If you need to remember one thing about shutter speed, it is that when the shutter speed number is a smaller fraction, the faster the shutter opens and closes.If you want to control the shutter speed manually, go for Shutter Priority (S or Tv on your camera) or manual mode.The shutter of your camera is the one you hear clicking or snapping.This is the sound that tells you that a photo has been captured.This is the shutter mechanism that determines the light reaches your sensor.The shutter speed is measured in fractions of a second, e.g. So, if you use the example given, 1/100s, what this means is that your camera sensor is exposed to light for only one hundredth of a second.If the ISO is related to light sensitivity, the aperture is all about controlling the amount of light that gets to the digital sensor of your camera.The aperture is the opening found in your camera lens.