Aperture • physical light
A lower f-number lets in more light at the same shutter duration. At 14mm, this lens can open to f/4.
CAMERA LAB / CONCEPT LESSON
Focal length: choose what fits in the frame
From the same camera position, 14mm includes more of the scene and 30mm gives tighter framing. Moving the camera changes perspective; zooming alone does not.
Canon EOS R50 VRF-S 14–30mm Verified endpoints
How the pieces connect
The field of view narrows as focal length increases. On this variable-aperture lens, available maximum aperture also changes.
Apply it to your camera
Compare the verified endpoints. Watch both framing and the aperture readout as you zoom.
Open the related labTry a change. See the relationship.
CURRENT4K / 25p14mm f/4 1/50 ISO 400
Aperturef/4
Shutter1/50 s
ISO400
Focal length14mm
Recording4K · 25 FPS
Illustrative preview. Your camera’s results will vary.
What these settings change
Shutter • time collecting light
Each frame collects light for 1/50 second. A longer exposure collects more light and more movement.
ISO • output brightness
ISO 400 changes output brightness, not incoming light. With little captured light, noise can become easier to see.
Physical exposure +0.00 stopsISO brightness +0.00 stopsCombined brightness +0.00 stops