Focal Lab

See how cameras actually see

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This viewfinder is live, and it is loaded with your Rebel T8i and the 50 mm STM. Stop down to ƒ/8 and watch the courtyard snap sharp, then open back to ƒ/1.8.

Body

2020 · APS-C (Canon) · 24 MP · 1.61× crop

Your 24 MP Rebel (850D). Canon APS-C is 22.3×14.9 mm — 1.61× crop, a hair tighter than Nikon/Fuji. No IBIS; Dual Pixel AF is the live-view trick.

Lens

Your nifty fifty. On Canon APS-C it sees like 80 mm — a short portrait, and the only fast hole in the bag. No IS; reciprocal rule is 1/80 s.

Canon EF. EF-S kit glass fits this APS-C body. Hasselblad XCD will not.

50 mm · 81 mm equivalent · 25° HFOV

Aperture

Shutter

ISO

Metering

Exposure compensation

Meter reads 10.0 EV · scene is 10.0 EV

Flash

Built-in flash on board — guide number 12 m at ISO 100.

Filters

ND filter

Circular polariser (−1.5 stops)

Clear · ISO 100 · 0.0 stops of filter

White balance

Colour temperature

The light on this set is about 5,200 K. AWB is guessing that number for you — set it by hand to see the cast.

Support

IBIS none + OIS none. Stabilisation stills the photographer, never the subject.

Focus

Single — click the figure, bottles, wall, or trees to lock a plane.

Focus distance3.20 mCamera distance3.20 mFocus peaking

Graphics

Auto eases compare and ridge loads. Low turns off shadows and film grain.

Range

Light on the set

Crop overlayDoF planesHistogramIgnore the mount (teaching adapter)

Histogram13.0 EV DR

Why this frame

On the meter
Scene EV is matched by ƒ/1.8 · 1/200 · ISO 100.
Sharp 3.08 m – 3.34 m
That window is the circle-of-confusion budget for this sensor, ƒ-stop, and focus distance.
25° × 17° field of view
50 mm on APS-C (Canon) behaves like a 81 mm on full frame (crop 1.61×).