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 / 02 / LENS
A different point of view.
Explore what your lens can see—and why its widest aperture changes.
Canon EOS R50 VRF-S 14–30mm Verified endpoints
14mm · a wider story
Fixed camera position. Illustrative framing; lens distortion and mode crops are excluded.
THE VARIABLE-APERTURE TRADE-OFF
Closer framing. A smaller widest opening.
At the same shutter duration, f/4 admits about 2.48× as much light as f/6.3. Zooming from 14mm at f/4 to 30mm at f/6.3 reduces captured light by about 1.31 stops. You can raise ISO for output brightness, add real light, or return to a wider framing.
14mm · f/4 Available30mm · f/4 Unavailable30mm · f/6.3 Available
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