This article explains camera exposure modes, including AUTO, scene modes, P (Program Auto), A/Av (Aperture Priority), S/Tv (Shutter Priority), and M (Manual). It describes their usage, advantages and disadvantages, and the creative control they offer. A learning path for beginners is recommended: AUTO → P → A/Av → M. Scene modes are good for beginners, manual modes for advanced users.
Category: Photography Basics > 3. Exposure & Camera Settings Article ID: 3.7 Created: May 2026
Key Points at a Glance
- Cameras offer various exposure modes – from fully automatic to fully manual
- The main modes are: P (Program Auto), A/Av (Aperture Priority), S/Tv (Shutter Priority), and M (Manual)
- Scene modes (Portrait, Landscape, Sports, etc.) are practical for beginners but limited in creative control
Explanation
Full Auto (AUTO / Green Mode)
The camera takes care of everything: aperture, shutter speed, ISO, white balance, and often the flash as well. Ideal for absolute beginners and snapshots when there’s no time to adjust settings. Downside: no creative control, no manual correction possible.
Scene Modes
Almost all cameras offer predefined scene modes optimized for specific situations:
| Scene Mode | What the Camera Adjusts |
|---|---|
| Portrait | Shallow depth of field (wide aperture), soft skin tones |
| Landscape | Large depth of field (narrow aperture), increased saturation |
| Sports / Kids | Fast shutter speed, continuous autofocus |
| Night / Twilight | Long shutter speed, high ISO, tripod recommendation if needed |
| Snow / Beach | Exposure compensation +1 to +2 EV, bright reference |
| Fireworks | Long exposure, focus set to infinity |
Scene modes are good for getting started but don’t deliver optimal results for unusual subjects or lighting situations. Experienced photographers prefer semi-automatic or manual modes.
P – Program Auto
The camera automatically selects a sensible combination of aperture and shutter speed – but the photographer can intervene: ISO, white balance, and other parameters can be set manually. Many cameras allow shifting the suggested aperture/shutter combination at the same exposure value (Program Shift).
Ideal for: Beginners who want to use auto as a starting point and gradually take manual control.
A / Av – Aperture Priority
The photographer chooses the aperture – the camera calculates the appropriate shutter speed automatically. ISO can be set manually or automatically.
- Small f-number (e.g., f/1.8) → shallow depth of field → subject isolated, background blurred (portrait, macro)
- Large f-number (e.g., f/11) → large depth of field → everything sharp from front to back (landscape, architecture)
Ideal for: any shot where depth of field is the key creative element. One of the most used modes by experienced photographers.
S / Tv – Shutter Priority
The photographer chooses the shutter speed – the camera calculates the appropriate aperture. ISO can be set manually or automatically.
- Fast shutter speed (e.g., 1/1000 s) → motion frozen → sports, animals, splashes
- Slow shutter speed (e.g., 1/8 s) → motion blur → flowing water, light trails
Ideal for: shots where depicting motion is the main creative element. Also useful for burst shots where all images should have the same shutter speed.
M – Manual
The photographer sets aperture, shutter speed, and ISO completely manually. The camera indicates if the chosen combination is too bright, too dark, or correctly exposed – but the decision is up to the photographer.
When is manual useful?
- Strong brightness differences in the scene (backlight, sunset)
- Flash photography with external control
- Photo series where all images should have identical exposure
- Creative overexposure or underexposure as a stylistic choice
- When exposure compensation is not sufficient
Overview of All Modes
| Mode | Aperture | Shutter Speed | ISO | Control | For Whom? |
|---|---|---|---|---|---|
| AUTO | Camera | Camera | Camera | None | Absolute beginners |
| Scene Mode | Camera | Camera | Camera | None | Beginners by subject |
| P | Camera | Camera | Photographer | Low | Beginners with adjustments |
| A / Av | Photographer | Camera | Photographer | Medium | Depth of field control |
| S / Tv | Camera | Photographer | Photographer | Medium | Motion control |
| M | Photographer | Photographer | Photographer | Full | Advanced users, professionals |
Practical Tip
A sensible learning path for beginners is: AUTO → P → A/Av → M. In A/Av mode, you learn how aperture affects the image without worrying about shutter speed. In S/Tv mode, you learn to control motion. Once you master both, there are hardly any reasons left to shoot in M mode—except in specific special situations where it’s really needed.