Camera Modes and the Exposure Triangle
Camera Modes are predetermined settings that help you take a photograph.
The mode dial is basically the first and most important dial on your camera. It determines how the camera is going to act when you point it at a scene.
It is important to understand what each of these settings does and how it can affect how you take the photograph and how it gives you more or less control over your camera.
The mode dial is basically the first and most important dial on your camera. It determines how the camera is going to act when you point it at a scene.
It is important to understand what each of these settings does and how it can affect how you take the photograph and how it gives you more or less control over your camera.
Aperture Priority Mode (A or Av)
Aperture Priority Mode (A or Av) is one of the most useful camera modes—especially for photography where depth of field matters.
What Aperture Priority Does You choose the aperture (f-number) and the camera automatically sets the shutter speed to get a correct exposure.
You can also control ISO (or set it to Auto ISO).
Why Use Aperture Priority Use it when you want control over:
What Aperture Settings Do
Wide Aperture (f/1.2 – f/2.8)
How to Use Aperture Priority
Recommended Aperture Settings by Genre Portraits: f/1.4–f/2.8 Background blur, subject isolation
Street & Everyday: f/4–f/5.6 Balance of sharpness and speed
Landscapes: f/8–f/11 Everything in focus, maximum sharpness
Birds/Wildlife: f/4–f/6.3 Let in enough light while keeping the subject sharp
Macro: f/8–f/16 Compensate for extremely shallow depth of field
Extra Tips
Time Value (Tv) mode also called Shutter Priority (S)
Time Value (Tv) mode — also called Shutter Priority (S) — is a semi-automatic camera mode where you set the shutter speed and the camera chooses the aperture to get a correct exposure.
Here’s a clean, practical guide:
What Time Value Mode Does You control the shutter speed, which determines:
You can set ISO manually or use Auto ISO.
Why Use Tv Mode Use Tv when motion control is more important than depth of field.
Great for:
Shutter Speed Guide Fast speeds (1/1000 – 1/8000 sec)
How to Use Tv Mode Step-by-Step
Recommended Shutter Speeds by Situation
Birds in Flight: 1/2500 – 1/3200
Sports (fast): 1/1000 – 1/2000
Sports (slow/indoors): 1/500 – 1/800
Walking People: 1/250 – 1/320
Kids Running: 1/500 – 1/1000
Cars (freeze): 1/1000
Panning Cars: 1/30 – 1/60
Waterfalls (soft): 1/2 – 1/10
Night Scenes (tripod): 1 sec – 30 sec
Extra Tips
Manual Mode
Manual Mode (M) gives you full control over all three exposure triangle settings:
Shutter speed
Aperture (f-stop)
ISO
The camera does not adjust exposure for you.
You decide everything.
Here’s a clear, practical guide to using Manual Mode.
What Manual Mode Is You choose:
You choose whether to follow it.
When to Use Manual Mode Manual mode is best when:
How to Use Manual Mode (Step-by-Step) Here’s the simplest workflow:
1. Set your ISO first
2. Set your aperture (f-stop) Choose based on depth of field:
3. Adjust shutter speed for exposure Turn the shutter speed dial until the meter is centered.
(Or intentionally keep it left/right for creative exposure)
4. Take a test shot → adjust
Cheat Settings for Common Situations Use these as starting points:
Portraits (outdoor)
Street Photography
Sports / Wildlife
Landscapes
Waterfalls (smooth water)
Night Photography
Astrophotography
Extra Tips
B Mode (Bulb Mode)
B Mode (Bulb Mode) is a camera setting that allows you to hold the shutter open as long as you want.
It’s used for long exposures that go beyond your camera’s standard limit (usually 30 seconds).
Here’s a clear and practical guide:
What B Mode Does
Bulb mode = shutter stays open for the entire time you hold the shutter button.
Release the button → shutter closes.
On many cameras you can also:
When to Use B Mode Use Bulb mode for any exposure longer than 30 seconds, such as:
Long-exposure night photography
How to Use B Mode (Step-by-Step)
Common Bulb Exposure Times Star Trails
Extra Tips
What Aperture Priority Does You choose the aperture (f-number) and the camera automatically sets the shutter speed to get a correct exposure.
You can also control ISO (or set it to Auto ISO).
Why Use Aperture Priority Use it when you want control over:
- Depth of field (how much of the image is in focus)
- Background blur (bokeh)
- Sharpness in challenging light without fully shooting manual
- Consistent results while focusing on composition and timing
What Aperture Settings Do
Wide Aperture (f/1.2 – f/2.8)
- Shallow depth of field
- Blurred backgrounds
- Great for portraits, low light, subject isolation
- Balanced depth of field
- Good for general photography, travel, pets, street
- Deep depth of field
- Landscape photography
- Sun & stars
- Requires more light or a tripod
How to Use Aperture Priority
- Switch to A or Av mode
- Set your aperture based on the scene
- Set ISO (Auto ISO works great)
- Check shutter speed If too low (e.g., under 1/100), increase ISO or choose a wider aperture
- Use exposure compensation (+/-) to brighten or darken the exposure
Recommended Aperture Settings by Genre Portraits: f/1.4–f/2.8 Background blur, subject isolation
Street & Everyday: f/4–f/5.6 Balance of sharpness and speed
Landscapes: f/8–f/11 Everything in focus, maximum sharpness
Birds/Wildlife: f/4–f/6.3 Let in enough light while keeping the subject sharp
Macro: f/8–f/16 Compensate for extremely shallow depth of field
Extra Tips
- Watch your shutter speed. If it falls below your lens’ safe speed (e.g., 1/ focal length), raise ISO.
- Use minimum shutter speed settings (some cameras allow this with Auto ISO).
- Exposure compensation is your friend in bright snow, backlit scenes, or dark backgrounds.
Time Value (Tv) mode also called Shutter Priority (S)
Time Value (Tv) mode — also called Shutter Priority (S) — is a semi-automatic camera mode where you set the shutter speed and the camera chooses the aperture to get a correct exposure.
Here’s a clean, practical guide:
What Time Value Mode Does You control the shutter speed, which determines:
- How motion is captured
- Whether movement is frozen or blurred
- How much light reaches the sensor
You can set ISO manually or use Auto ISO.
Why Use Tv Mode Use Tv when motion control is more important than depth of field.
Great for:
- Wildlife
- Sports
- Birds in flight
- Waterfalls
- Kids running
- Panning shots
- Long exposures
Shutter Speed Guide Fast speeds (1/1000 – 1/8000 sec)
- Freeze fast action
- Birds in flight, sports, vehicles, wildlife
- Bright conditions or higher ISO often needed
- Everyday motion
- People walking, pets, light sports
- Good general-purpose range
- Intentional motion blur
- Smooth motion in waterfalls
- Panning shots
- Use stabilization or a tripod
- Night photography
- Light trails
- Astro (although Manual is better for stars)
- Very smooth water
How to Use Tv Mode Step-by-Step
- Switch to Tv / S mode
- Set the shutter speed based on the type of motion
- Set ISO (Auto ISO works well)
- Half-press shutter
- Camera chooses aperture
- Watch for warnings
- If the aperture is flashing or hits f/22 or f/32, the camera doesn’t have enough light
- Raise ISO or choose a slower shutter speed
- Use exposure compensation to make the image brighter/darker
Recommended Shutter Speeds by Situation
Birds in Flight: 1/2500 – 1/3200
Sports (fast): 1/1000 – 1/2000
Sports (slow/indoors): 1/500 – 1/800
Walking People: 1/250 – 1/320
Kids Running: 1/500 – 1/1000
Cars (freeze): 1/1000
Panning Cars: 1/30 – 1/60
Waterfalls (soft): 1/2 – 1/10
Night Scenes (tripod): 1 sec – 30 sec
Extra Tips
- Minimum shutter speed + Auto ISO is extremely useful.
- Stabilization helps with slow speeds, but not with subject motion.
- If your aperture is forced to the max (f/3.5, f/5.6) and exposure is still dark, raise ISO.
- For sports and wildlife, set a safe minimum speed (e.g., 1/1000) and let the camera handle the rest.
Manual Mode
Manual Mode (M) gives you full control over all three exposure triangle settings:
Shutter speed
Aperture (f-stop)
ISO
The camera does not adjust exposure for you.
You decide everything.
Here’s a clear, practical guide to using Manual Mode.
What Manual Mode Is You choose:
- Aperture → depth of field
- Shutter speed → motion blur or freeze
- ISO → brightness + noise
You choose whether to follow it.
When to Use Manual Mode Manual mode is best when:
- Light is constant (studio, sunrise/sunset, night scenes)
- You want a consistent exposure between shots
- You’re photographing long exposures (light trails, waterfalls, astro)
- You’re doing flash photography
- You're learning exposure and want total control
How to Use Manual Mode (Step-by-Step) Here’s the simplest workflow:
1. Set your ISO first
- Bright daylight → ISO 100–200
- Indoor light → ISO 800–1600
- Low light/night → ISO 1600–6400
2. Set your aperture (f-stop) Choose based on depth of field:
- Portraits → f/1.8 – f/2.8
- Street/general → f/4 – f/5.6
- Landscapes → f/8 – f/11
- Night sky → f/1.4 – f/2.8
3. Adjust shutter speed for exposure Turn the shutter speed dial until the meter is centered.
(Or intentionally keep it left/right for creative exposure)
4. Take a test shot → adjust
- Too dark → slower shutter or higher ISO
- Too bright → faster shutter or narrower aperture
Cheat Settings for Common Situations Use these as starting points:
Portraits (outdoor)
- f/1.8–f/2.8
- 1/250
- ISO 100
- Adjust shutter for brightness
Street Photography
- f/5.6
- 1/250
- ISO 200–400
Sports / Wildlife
- f/4–f/6.3
- 1/1000 – 1/2000
- ISO 400–1600
Landscapes
- f/8–f/11
- 1/60 – 1/200
- ISO 100
Waterfalls (smooth water)
- f/8–f/16
- 1/4 – 1 sec
- ISO 100
- Tripod recommended
Night Photography
- f/2.8
- 10–20 sec
- ISO 1600–3200
- Tripod mandatory
Astrophotography
- f/1.4 – f/2.8
- 15–20 sec
- ISO 3200–6400
Extra Tips
- Use the histogram — more reliable than the meter.
- Don’t chase the meter when shooting backlit subjects.
- Assign ISO to a dial if your camera allows it.
- Use Manual + Auto ISO if you want manual feel but automatic brightness.
- If shooting events: use Manual for consistency + Auto ISO (very common technique).
B Mode (Bulb Mode)
B Mode (Bulb Mode) is a camera setting that allows you to hold the shutter open as long as you want.
It’s used for long exposures that go beyond your camera’s standard limit (usually 30 seconds).
Here’s a clear and practical guide:
What B Mode Does
Bulb mode = shutter stays open for the entire time you hold the shutter button.
Release the button → shutter closes.
On many cameras you can also:
- Use a remote shutter
- Use a cable release
- Use a phone app
When to Use B Mode Use Bulb mode for any exposure longer than 30 seconds, such as:
Long-exposure night photography
- Light trails
- Star trails
- Cityscapes
- Fireworks
- Long coastal exposures
- Rivers and waterfalls in very low light
- Capture multiple bursts in a single frame
How to Use B Mode (Step-by-Step)
- Set camera to B or Bulb
- Switch to manual focus
- Set:
- Aperture (depth of field)
- ISO (usually low: ISO 100–400)
- Use a tripod
- Press shutter to start exposure
- Release shutter to end exposure
- Use a remote to avoid shaking the camera
Common Bulb Exposure Times Star Trails
- 5 minutes → 1 hour
- Or many stacked 30s shots (better)
- 10–60 seconds
- 1–4 minutes (with ND filters optional)
- 30 seconds → 5 minutes
- 2–10 seconds per burst
- Release when composition looks good
Extra Tips
- Use Bulb Timer (if your camera has it) to avoid holding the button
- Turn on Long Exposure Noise Reduction for cleaner images
- Avoid touching the camera — use a remote trigger
- For very long exposures, cover the viewfinder to prevent light leaks
- Check the histogram after test shots