Aperture Settings by Camera Brand: Canon, Sony, Nikon, Fujifilm

Aperture photography

Canon, Nikon, Sony, and Fujifilm do not use different laws of exposure. At the same f-number, shutter speed, ISO, framing, and light, the underlying exposure relationship is the same. The differences are how you select aperture, which modes are available, what your lens allows, and whether a dial or aperture ring has been reassigned. Check the manual for your exact camera and lens instead of following a generic menu path.

Find the aperture control on your camera

  • Canon: Look for Av (aperture-priority) or M (manual). The aperture control is often a dial, but the assignment changes by body and customization. Check the displayed f-number before shooting.
  • Nikon: A and M are the relevant exposure modes on many Nikon bodies. Lens and body controls vary; verify the selected f-number on screen or in the viewfinder.
  • Sony: A mode lets you set the f-number while the camera sets shutter speed for metered exposure. Assigned dials and lens aperture rings can change the operation. Sony’s A-mode and aperture support article explains the relationship.
  • Fujifilm: Many X-series setups use a lens aperture ring or command dial, sometimes with an A position. The exact behavior depends on the lens and body. Fujifilm’s exposure-triangle lesson gives the exposure context.

Pick the setting from the photograph, not the badge

For a portrait with a soft background, start near the lens’s wider apertures, then check whether both eyes and the features you need are sharp. For a landscape, try a middle aperture and inspect near-to-far sharpness; stop down only when the composition needs it. For street work, balance depth of field against the shutter speed needed to avoid blur. For video, consider how your chosen shutter speed, available light, and depth of field fit together; a neutral-density filter may help in bright light, but exposure and motion are separate decisions.

Maximum aperture belongs to the lens. A zoom marked f/3.5-5.6 cannot open to f/3.5 at every focal length; its widest available aperture changes as you zoom. Body and lens combinations may have additional limits. Canon’s aperture guide explains fixed versus variable maximum aperture and why a lower f-number means a wider opening.

Before you compare cameras

  1. Confirm the actual lens model, focal length, and available maximum aperture.
  2. Inspect custom dial mappings if an online walkthrough does not match your screen.
  3. Check the metered shutter speed after choosing aperture; raise ISO or change the setting if motion would blur.
  4. Inspect the resulting photo at full size. Focus placement and camera movement can matter more than one stop of aperture.

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