GuidedVisual
Products example

A camera, every control

The product manual: every button and dial on three views of a camera, each in a callout.

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In words

Everything on this diagram

The same content as the picture, as text: every part and what it says when you open it.

Back

Viewfinder eyepiece

An electronic viewfinder: a small high-resolution screen behind a lens, showing exactly the exposure you will get. A sensor beside it switches from the rear screen as your eye arrives.

Type
Electronic (OLED)
Switches on
When an eye comes near

Menu button

Opens the full menu on the rear screen.

Opens: The full menu

Tilting touchscreen

Tilts up and down for low and high angles. Touch to choose a focus point, or to take the picture.

Moves
Tilts up and down
Touch
Focus point, shutter, menus

Rear command dial

Turned with the thumb. In aperture priority it sets the aperture; in manual, usually the shutter speed.

Usually sets: Shutter speed or aperture

AF-ON button

Focuses when pressed with the thumb, so focusing and taking the picture become two separate fingers - back-button focus.

Used for: Back-button focus

Focus joystick

Moves the focus point around the frame without taking your eye from the viewfinder. Pressed in, it re-centres it.

Moves
The focus point
Pressed
Re-centres it

Q (quick menu)

A one-screen overview of the settings you change most, each a touch away.

Shows: The most-used settings

Control wheel

A turning wheel that is also four buttons: up, down, left and right, each assignable.

Turns
Scrolls menus and images
Presses
Four assignable directions

OK button

Confirms a choice in the menus.

Confirms: Menu choices

Playback button

Shows the pictures on the card. Half-pressing the shutter takes you straight back to shooting.

Back to shooting: Half-press the shutter

Delete button

Deletes the picture on screen, after asking.

Asks first: Yes

Top

Lens

A standard zoom seen from above, with its zoom ring and focus ring. The mount takes many lenses, so this is one of several.

Rings
Zoom and focus
Changes
At the mount

Mode dial

Chooses who decides the exposure: the camera (auto), you (manual), or a share of each - aperture or shutter priority.

Modes
Auto, P, A, S, M, and custom
Locks
With the centre button

Hot shoe

Takes a flash, a microphone or a remote trigger, with contacts that let the camera talk to it.

Takes: Flash, microphone, trigger

Power switch

A collar round the shutter button, so the camera can be switched on with the finger that will take the picture.

Placed: Around the shutter button

Shutter button

Half-press to focus and measure the light, press fully to take the picture.

Half-press
Focus and meter
Full press
Take the picture

Front command dial

Turned with the forefinger, beside the shutter. In manual it usually sets the aperture.

Usually sets: Aperture

Exposure compensation dial

Makes the picture brighter or darker than the camera judged, in thirds of a stop.

Range
−3 to +3 stops
Steps
Thirds of a stop

ISO button

Sets how sensitive the sensor is. Higher numbers work in less light, at the cost of grain.

Higher ISO: Less light needed, more noise

Movie record button

Starts and stops video in any mode.

Starts: Video, in any mode

Strap lugs

Where the strap attaches, one each side.

One: Each side

Front

Grip

Deep enough for the whole hand, and it holds the battery, which is why the battery door is on the bottom of the grip.

Holds
The battery
Covering
Textured rubber

AF-assist lamp

Lights the subject briefly in the dark so the camera can focus, and blinks as the self-timer counts down.

Also: The self-timer light

Lens mount

A metal bayonet the lens twists into. A short distance from mount to sensor is what lets mirrorless lenses be small.

Material
Metal bayonet
Locks
With a quarter turn

Electronic contacts

Gold pins that let the body and the lens talk: focus, aperture, stabilisation, and which lens it is.

Carry: Focus, aperture, stabilisation

Image sensor

The full-frame sensor, 36 × 24 mm, that records the picture. With no mirror in front of it, it is exposed whenever the lens is off.

Size
36 × 24 mm (full frame)
Protected by
The shutter, when the camera is off

Lens release button

Hold it in and turn the lens to take it off.

Hold and: Turn the lens

Function buttons

Two buttons beside the mount, reachable without moving the hand, each set to whatever is changed most.

Assignable: Yes, both

Stereo microphones

Two small holes on top of the mount for stereo sound with video. A microphone on the hot shoe does better.

For: Stereo sound with video