Photography Glossary: 100+ Terms Explained for Newbies

Camera Types

DSLR (Digital Single-Lens Reflex)
A camera that uses a mirror and optical viewfinder. Known for interchangeable lenses and manual controls.

Mirrorless
A camera without a mirror mechanism, allowing for smaller bodies. Still supports interchangeable lenses and full manual control.

Point-and-Shoot
Compact cameras with fixed lenses, typically automatic and easy to use.

Bridge Camera
Larger than a point-and-shoot, with a long zoom range but a fixed lens.

Medium Format
Cameras with larger sensors than full-frame, used for high-end commercial or studio photography.

Film Camera
Analog cameras that use film instead of digital sensors.

Basic Settings

Aperture (f-stop)
Controls how wide the lens opens to let in light. Lower numbers (e.g., f/1.8) mean more light and shallower depth of field.

Shutter Speed
The amount of time the shutter remains open. Measured in seconds or fractions (e.g., 1/250). Slower speeds let in more light but risk motion blur.

ISO
A setting that determines the camera sensor's sensitivity to light. Higher ISO (e.g., 3200) is good for low light, but may introduce noise.

Exposure
The overall brightness of a photo, influenced by aperture, shutter speed, and ISO.

Exposure Triangle
The combination of aperture, shutter speed, and ISO. Adjusting one affects the others.

White Balance
Adjusts color temperature in a photo to appear more natural, compensating for lighting conditions.

Metering
How your camera reads the light in a scene to determine proper exposure.

EV (Exposure Value)
A number that represents exposure adjustments. +1 EV brightens, -1 EV darkens.

Camera Modes

Auto Mode
The camera decides all settings for you.

Manual Mode (M)
You control aperture, shutter speed, and ISO.

Aperture Priority (A or Av)
You set the aperture, camera adjusts shutter speed.

Shutter Priority (S or Tv)
You set the shutter speed, camera adjusts aperture.

Program Mode (P)
Camera chooses shutter speed and aperture, but allows some manual input.

Bulb Mode (B)
Keeps the shutter open as long as you hold the shutter button.

Lenses

Prime Lens
A lens with a fixed focal length (e.g., 50mm). Sharper and often faster (lower f-stop) than zoom lenses.

Zoom Lens
Covers a range of focal lengths (e.g., 24–70mm). Offers versatility.

Wide-Angle Lens
Captures a broad field of view (e.g., 16mm, 24mm). Great for landscapes or architecture.

Telephoto Lens
Magnifies distant subjects (e.g., 70–200mm). Ideal for sports or wildlife.

Macro Lens
Specialized for close-up shots with great detail.

Fisheye Lens
Extreme wide-angle lens that creates a curved, distorted effect.

Focal Length
Measured in millimeters (mm), it indicates the lens’s angle of view.

Image Stabilization (IS/VR/OSS)
Technology that reduces camera shake, allowing for sharper images at slow shutter speeds.

Lens Mount
The interface between the lens and the camera body (e.g., Canon EF, Nikon F, Sony E-mount).

Focus & Autofocus

Autofocus (AF)
Automatically adjusts the lens to keep the subject in focus.

Manual Focus (MF)
You adjust the focus ring on the lens yourself.

Focus Peaking
Highlights in-focus areas when manually focusing.

AF Modes

• One-Shot/AF-S: Focus locks once.

• AI Servo/AF-C: Continuous focus while the subject moves.

• AI Focus/AF-A: Automatically switches between One-Shot and Servo.

Sensor & Image Quality

Sensor
The digital component that captures the image. Larger sensors typically produce better image quality.

Crop Sensor (APS-C)
Smaller than full-frame. Adds a crop factor (e.g., 1.5x) to lens focal length.

Full-Frame Sensor
Same size as 35mm film. Offers better low-light performance and depth of field control.

Dynamic Range
The range of light from shadows to highlights a sensor can capture.

Noise
Grainy texture in photos, often caused by high ISO settings.

RAW
Unprocessed image file that retains all data from the sensor. Allows better post-processing.

JPEG
Compressed image file. Smaller size but loses some detail and editing flexibility.

Bit Depth
Determines how much color information an image file contains.

Composition Terms

Rule of Thirds
A guideline where you divide the frame into thirds both horizontally and vertically to place your subject off-center for better balance.

Leading Lines
Natural or man-made lines in the scene that guide the viewer’s eye.

Framing
Using elements in the scene to create a “frame” around your subject.

Negative Space
Empty areas in the frame that emphasize the subject.

Depth of Field (DoF)
How much of the image is in focus from foreground to background. Shallow DoF blurs the background; deep DoF keeps more in focus.

Bokeh
The aesthetic quality of the out-of-focus background blur.

Lighting & Flash

Natural Light
Any light not generated by a flash or artificial source.

Golden Hour
Shortly after sunrise or before sunset when light is warm and soft.

Blue Hour
The time just before sunrise or after sunset when the light is cool and blue.

Backlighting
When the light source is behind your subject, often used for silhouettes.

Fill Light
Used to lighten shadows and balance the exposure.

TTL (Through The Lens) Flash
Automatically adjusts flash output based on the camera’s metering.

Hot Shoe
The mount on top of a camera to attach an external flash or other accessories.

Diffuser
Softens the light from a flash to reduce harsh shadows.

File & Gear Terms

Memory Card
Used to store images. Common types: SD, CF, XQD.

Card Reader
Device used to transfer images from a memory card to a computer.

Battery Grip
Attaches to the camera to extend battery life and provide better ergonomics.

Tripod
A three-legged stand to stabilize your camera for long exposures or consistent framing.

Remote Shutter Release
Allows you to trigger the shutter without touching the camera.

Histogram
A graph that shows the tonal distribution in your image from black to white.

Bracketing
Taking multiple shots at different exposures to blend later in editing.

Time-Lapse
A sequence of images captured over time and played back quickly.

Post-Processing Terms

Editing
Adjusting images after they’re taken, including exposure, color, sharpness, and cropping.

Retouching
More advanced editing, often involving removal of objects, skin smoothing, etc.

Presets
Predefined settings applied to photos to create a consistent look (commonly used in Lightroom).

Color Grading
Stylistic color adjustments for mood or visual storytelling.

Sharpening
Enhances edge contrast to make photos appear crisper.

Contrast
The difference between light and dark areas in an image.

Clipping
Loss of detail in shadows or highlights due to over- or under-exposure.

Learning photography can be much easier when you understand the language. This glossary provides a foundational understanding of key terms, especially if you’re new to shooting or shopping for used gear.

Bookmark this page and return to it anytime you come across a term you don’t recognize. If you’re ready to put your knowledge into action, explore the latest deals on quality used cameras and lenses on our used listings page.