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aperture

Photography Tips for Beginners: Master Exposure With the Camera You Have

You can start taking more intentional photos with the camera or phone you already own. Learn how aperture, shutter speed and ISO shape an image, then practise one control at a time.

By ThatPainter Team 5 min read
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You do not need a new camera to start taking better photographs. Begin with the camera or phone you already have, decide what you want the image to do, and practise the exposure controls that shape that result: aperture, shutter speed and ISO. You can learn one control at a time in an automatic or priority mode; manual mode is an option, not a prerequisite.

Do you need a good camera to take good photos?

No particular camera is a requirement for learning the fundamentals. The exposure principles apply to digital cameras and film cameras, and you can practise composition and light with a smartphone as well. Start by making deliberate choices about what to include in the frame and what you want the viewer to notice.

Before you take a picture, ask yourself what matters most: keeping a moving subject sharp, showing its movement, separating a person from the background, or keeping more of a landscape in focus. That answer points you toward the control to practise.

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How do aperture, shutter speed and ISO affect a photograph?

Exposure is the light reaching a digital sensor or a frame of film. Aperture, shutter speed and ISO work together to shape the exposure and the look of the image. As Nikon photography educator Reed Hoffmann puts it, “Those three are closely connected, and that connection is the basis of every photograph.” Nikon’s overview of exposure explains the relationship.

Aperture: the lens opening and depth of field

Aperture is the opening in the lens. It is described by an f-number, and the numbering can feel counterintuitive at first: a lower f-number means a larger opening, while a higher f-number means a smaller opening. A larger opening admits more light and generally creates shallower depth of field, so the background may look blurrier. A smaller opening generally keeps more of the scene in focus.

For a portrait, a wide aperture such as f/2.8 can be a starting point for separating the subject from the background. For a landscape, f/8 or f/11 can be a starting point for greater depth of field. These are examples, not universal settings: the scene, lens and available light all matter. See Nikon’s explanation of maximum aperture.

Shutter speed: sharp motion or motion blur

Shutter speed controls how long light reaches the sensor or film. A faster shutter can freeze movement; a slower one can record movement as blur. If you want a running child or a bird to look sharp, start by trying a faster shutter. If you want flowing water or moving lights to streak, try a slower one and keep the camera steady.

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Nikon’s D3500 manual uses 1/1600 second and 1 second as examples of fast and slow shutter effects. Treat them as illustrations, not settings that work for every subject or camera. The D3500 manual’s shutter-speed and aperture section describes these modes and effects.

ISO: a useful adjustment with a noise trade-off

ISO affects how the camera amplifies the image signal. When your chosen aperture and shutter speed do not admit enough light, raising ISO can help you get the exposure you need. The trade-off is that higher ISO can make image noise more visible. How much noise appears depends on the camera, so there is no single ISO number that defines acceptable quality for every model.

Which camera mode should a beginner use?

Choose a mode that lets you practise the visual result you care about without making every setting a separate decision. Priority modes let you control one exposure choice while the camera selects a paired setting; manual mode lets you control both aperture and shutter speed. Names differ between brands, so check your camera manual rather than assuming every camera uses Nikon’s labels.

Mode What you choose Useful when
Aperture priority: A on Nikon; commonly Av on Canon Aperture; the camera selects shutter speed You want to practise background blur or keep more of a scene in focus.
Shutter priority: S on Nikon; commonly Tv on Canon Shutter speed; the camera selects aperture You want to freeze movement or deliberately show motion blur.
Manual: M on Nikon Aperture and shutter speed You want direct control of both settings and are ready to adjust them yourself.
Programmed auto: P on Nikon The camera selects an exposure combination; you can concentrate on the scene You want a simple starting point while learning to compose and notice light.

The labels in the table reflect Nikon’s D3500 manual and common Canon priority labels; controls and available options vary by camera. Nikon also provides a product-specific explanation of its D3500 modes. You can use automatic modes while learning; switching to manual is not a graduation requirement.

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How to practise the controls without getting overwhelmed

  1. Choose a familiar subject. Try a person near a window, a pet in motion, or a view with objects at different distances.
  2. Decide what you want the picture to show. For example, choose a sharp moving subject, a blurred background, or more of the scene in focus.
  3. Select the matching priority mode. Use shutter priority for motion or aperture priority for depth of field. If your camera uses different labels, look up the equivalent in its manual.
  4. Take a frame, then change one control. Compare the result with the first image. Changing one setting at a time makes its effect easier to see.
  5. Bring ISO into the decision when needed. If the chosen aperture or shutter speed leaves the image too dark, raise ISO and look for noise in the result.

Repeat the exercise in different light and with different subjects. Nikon specifically recommends experimenting to learn how aperture changes an image; a small series of comparisons is more instructive than trying to memorise a supposedly perfect setting.

When is a tripod useful?

A tripod is most useful when you need a long exposure and want the stationary parts of the frame to stay steady—for example, at night, when photographing stars or fireworks, or when recording moving lights. Nikon’s D3500 manual recommends a tripod or a stable, level surface for long exposures in these kinds of scenes. See the manual’s guidance on long exposures.

It is not a universal first purchase: for many everyday photographs, the camera or phone in your hand is enough to practise exposure and composition.

Where can you continue learning?

If you prefer guided lessons, Nikon lists Nikon School and online courses among its learning resources. Adobe also offers a beginner photography guide covering equipment, settings and techniques. A general photography book can also serve as a self-paced reference; choose one that matches your experience and camera system.

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