Canon EOS R6 Mark III Specs, Sensor Size & Crop Factor

Q: What is the crop factor of the Canon EOS R6 Mark III?

The Canon EOS R6 Mark III has a crop factor of 1.00× relative to 35 mm full frame (diagonal 43.3 mm vs 43.3 mm).

1.00×

Crop factor

36.0×24.0 mm

Sensor size

864 mm²

Area · 100% of full frame

32.5 MP

Resolution

5.17 µm

Pixel pitch

f/7.7

Diffraction-limited aperture

2025

Release year

Specifications#

Brand: Canon
Model: EOS R6 Mark III
Camera type: Mirrorless
Released: 2025
Lens mount: Canon RF
Sensor size: 36.0 × 24.0 mm (Full frame (35 mm))
Crop factor: 1.00×
Resolution: 32.5 MP (6,960 × 4,640 px)
ISO range: 100 – 64,000
Fastest shutter: 1/8,000 s
Continuous shooting: 40 fps
Max video resolution: 4K
Weight: 609 g (21.5 oz)
Sensor: Dual-pixel CMOS sensor
Sensor type: Full-frame 35mm
Viewfinder: 3.69-million dot OLED EVF
Battery: LP-E6P; 270 shots, 390 shots (Power Saving Mode) (EVF); 510 shots, 620 shots (Power Saving Mode) (LCD) (CIPA rating)
Dimensions: 138.4 × 98.4 × 88.4 mm
Predecessor: Canon EOS R6 Mark II
Made in: Japan
Launch price: US$2,799 (body only); US$3,150 (with RF 24-105 F4-7.1 IS STM); US$4,050 (with RF 24-105 F4 L IS USM)
Video: 7K RAW/60p (with CFexpress card); 4K/60p internal (oversampled from 7K)

Specifications merged from Wikipedia, Wikidata and Lensfun. Spot an error? Tell us.

Sensor size compared#

The Canon EOS R6 Mark III sensor (highlighted) drawn to scale against common formats. Its area is 100% of a full-frame sensor.

Focal length equivalents & field of view#

Multiply any focal length by 1.00 to get the full-frame field of view. Angles are for a rectilinear lens focused at infinity.

Lens on this camera	Full-frame equivalent	Horizontal	Vertical	Diagonal
10 mm	10 mm	121.9°	100.4°	130.4°
12 mm	12 mm	112.6°	90.0°	122.0°
14 mm	14 mm	104.3°	81.2°	114.2°
16 mm	16 mm	96.7°	73.7°	107.0°
18 mm	18 mm	90.0°	67.4°	100.5°
20 mm	20 mm	84.0°	61.9°	94.5°
24 mm	24 mm	73.7°	53.1°	84.1°
28 mm	28 mm	65.5°	46.4°	75.4°
35 mm	35 mm	54.4°	37.8°	63.4°
40 mm	40 mm	48.5°	33.4°	56.8°
50 mm	50 mm	39.6°	27.0°	46.8°
56 mm	56 mm	35.6°	24.2°	42.2°
70 mm	70 mm	28.8°	19.5°	34.3°
85 mm	85 mm	23.9°	16.1°	28.6°
100 mm	100 mm	20.4°	13.7°	24.4°
135 mm	135 mm	15.2°	10.2°	18.2°
200 mm	200 mm	10.3°	6.9°	12.3°
300 mm	300 mm	6.9°	4.6°	8.2°
400 mm	400 mm	5.2°	3.4°	6.2°
600 mm	600 mm	3.4°	2.3°	4.1°
800 mm	800 mm	2.6°	1.7°	3.1°

Depth of field table#

Total depth of field at each subject distance, using a circle of confusion of 30.0 µm (the 0.030 mm full-frame standard scaled by the crop factor). Detailed tables: 24 mm f/1.8, 24 mm f/2.8, 35 mm f/1.8, 35 mm f/2.8, 50 mm f/1.8, 50 mm f/2.8.

Focal	Aperture	50.0 cm	1.00 m	2.00 m	3.00 m	5.00 m	10.0 m	Hyperfocal
22 mm	f/1.8	5.3 cm	22.1 cm	92.8 cm	2.24 m	8.03 m	∞	8.98 m
22 mm	f/2.8	8.4 cm	35.0 cm	1.56 m	4.23 m	34.1 m	∞	5.78 m
22 mm	f/4	12.0 cm	51.5 cm	2.58 m	9.74 m	∞	∞	4.06 m
22 mm	f/8	25.1 cm	1.27 m	103 m	∞	∞	∞	2.04 m
43 mm	f/1.8	1.3 cm	5.6 cm	22.9 cm	52.2 cm	1.48 m	6.35 m	34.3 m
43 mm	f/2.8	2.1 cm	8.7 cm	35.8 cm	82.1 cm	2.37 m	11.4 m	22.1 m
43 mm	f/4	3.0 cm	12.5 cm	51.6 cm	1.20 m	3.59 m	22.2 m	15.5 m
43 mm	f/8	6.0 cm	25.2 cm	1.09 m	2.70 m	11.0 m	∞	7.75 m
73 mm	f/1.8	0.4 cm	1.9 cm	7.8 cm	17.8 cm	50.1 cm	2.03 m	98.8 m
73 mm	f/2.8	0.7 cm	2.9 cm	12.2 cm	27.7 cm	78.1 cm	3.21 m	63.5 m
73 mm	f/4	1.0 cm	4.2 cm	17.4 cm	39.7 cm	1.12 m	4.71 m	44.5 m
73 mm	f/8	1.9 cm	8.4 cm	35.0 cm	80.5 cm	2.33 m	11.2 m	22.3 m
120 mm	f/1.8	0.1 cm	0.7 cm	2.8 cm	6.5 cm	18.3 cm	74.2 cm	267 m
120 mm	f/2.8	0.2 cm	1.0 cm	4.4 cm	10.1 cm	28.5 cm	1.16 m	172 m
120 mm	f/4	0.3 cm	1.5 cm	6.3 cm	14.4 cm	40.7 cm	1.66 m	120 m
120 mm	f/8	0.6 cm	2.9 cm	12.5 cm	28.9 cm	81.9 cm	3.39 m	60.1 m

Equivalent aperture#

Exposure is identical at the same f-number on any format; equivalence only describes depth of field and total light.

Aperture on this camera	Full-frame equivalent (depth of field)	Hyperfocal at 43 mm
f/1.2	f/1.2	51.4 m
f/1.4	f/1.4	44.1 m
f/1.8	f/1.8	34.3 m
f/2	f/2.0	30.9 m
f/2.8	f/2.8	22.1 m
f/4	f/4.0	15.5 m
f/5.6	f/5.6	11.0 m
f/8	f/8.0	7.75 m

Diffraction & pixel pitch#

With 5.17 µm pixels, diffraction starts to soften pixel-level detail around f/7.7. For maximum sharpness keep landscapes between f/4.2 and f/8; stopping down further trades detail for depth of field.

Aperture	Airy disk diameter	Spread over	At 100% view
f/2.8	3.8 µm	0.7 px	sharp
f/4	5.4 µm	1.0 px	sharp
f/5.6	7.5 µm	1.5 px	sharp
f/8	10.7 µm	2.1 px	slight softening
f/11	14.8 µm	2.9 px	slight softening
f/16	21.5 µm	4.2 px	visibly soft
f/22	29.5 µm	5.7 px	visibly soft

Maximum print sizes#

At 32.5 MP the Canon EOS R6 Mark III produces 6,960 × 4,640 pixel images. See the 33 megapixel guide or the print size calculator.

Resolution	Typical use	Inches	Centimetres
300 DPI	Photo-lab quality	23.2 × 15.5 in	59 × 39 cm
240 DPI	Fine-art inkjet	29.0 × 19.3 in	74 × 49 cm
200 DPI	Wall print	34.8 × 23.2 in	88 × 59 cm
150 DPI	Poster, viewed from 1 m+	46.4 × 30.9 in	118 × 79 cm

Night-sky exposure limits#

Longest exposure before stars trail. The NPF rule accounts for pixel pitch and is stricter than the classic 500 rule — use it for pin-sharp stars on high-resolution sensors.

Focal length	500 rule	NPF f/1.8	NPF f/2.8	NPF f/4
14 mm (14 mm eq.)	35.7 s	15.6 s	18.1 s	21.1 s
20 mm (20 mm eq.)	25.0 s	10.9 s	12.7 s	14.8 s
24 mm (24 mm eq.)	20.8 s	9.1 s	10.5 s	12.3 s
35 mm (35 mm eq.)	14.3 s	6.2 s	7.2 s	8.4 s
50 mm (50 mm eq.)	10.0 s	4.4 s	5.1 s	5.9 s

Open the NPF / 500 rule calculator →

Handheld shutter speed guide#

The reciprocal rule uses the equivalent focal length. High-resolution sensors may need one stop faster than this for pixel-sharp results.

Focal length	No stabilisation (1/equiv. focal)	With 3-stop IS	With 5-stop IBIS
24 mm	1/25 s	0.3 s	1.3 s
50 mm	1/50 s	1/6 s	0.6 s
100 mm	1/100 s	1/13 s	0.3 s
200 mm	1/200 s	1/25 s	1/6 s

Lenses for the Canon EOS R6 Mark III#

Native Canon RF lenses in our database (48 total). Also adaptable: T-mount (T2), Canon EF, M42 screw mount, Deckel (DKL), Canon EF-S, M39 / LTM (Leica thread).

Canon RF-S 18-150mm F3.5-6.3 IS STM 18–150 mm
Canon RF 24mm F1.4 L VCM 24 mm
Canon RF 24mm F1.8 MACRO IS STM 24 mm
Canon RF 28-70mm F2.8 IS STM 28–70 mm
Canon RF 50mm F1.2 L USM 50 mm
Canon RF 50mm F1.4 L VCM 50 mm
Canon RF 135mm F1.8L IS USM 135 mm
Canon RF 10-20mm f/4L IS STM 10–20 mm
Canon RF-S 10-18mm F4.5-6.3 IS STM 10–18 mm
Laowa 10mm f/2.8 Zero-D FF 10 mm
Sigma 10-18mm F2.8 DC DN | Contemporary 023 10–18 mm
Tamron 11-20mm f/2.8 Di III-A RXD (B060) 11–20 mm
Canon RF 14-35mm F4 L IS USM 14–35 mm
Canon RF 15-30mm F4.5-6.3 IS STM 15–30 mm
Canon RF 15-35mm F2.8L IS USM 15–35 mm
Laowa 15mm f/2.0 Zero-D 15 mm
Canon RF 16mm F2.8 STM 16 mm
Sigma 16-300mm F3.5-6.7 DC OS | C 16–300 mm
Sigma 16mm f/1.4 DC DN Contemporary 16 mm
Sigma 17-40mm F1.8 DC | Art 025 17–40 mm
Tamron 17-70mm F/2.8 Di III-A VC RXD 17–70 mm
Canon RF-S 18-45mm F4.5-6.3 IS STM 18–45 mm
Sigma 18-50mm F2.8 DC DN | Contemporary 021 18–50 mm
Tamron 18-300mm F3.5-6.3 B061 RF 18–300 mm
Canon RF 24-105mm F4-7.1 IS STM 24–105 mm
Canon RF 24-105mm F4L IS USM 24–105 mm
Canon RF 24-240mm F4-6.3 IS USM 24–240 mm
Canon RF 24-50mm F4.5-6.3 IS STM 24–50 mm
Canon RF 24-70mm F2.8L IS USM 24–70 mm
Canon RF 28-70mm F2 L USM 28–70 mm
Canon RF 28mm F2.8 STM 28 mm
Sigma 30mm f/1.4 DC DN 30 mm
Canon RF 35mm F1.4 L VCM 35 mm
Canon RF 35mm F1.8 MACRO IS STM 35 mm
Canon RF 45mm F1.2 STM 45 mm
Canon RF 50mm F1.8 STM 50 mm

Similar cameras#

Other Full frame (35 mm) cameras from around the same time.

Frequently asked questions#

What is the crop factor of the Canon EOS R6 Mark III?

The Canon EOS R6 Mark III has a crop factor of 1.00× relative to 35 mm full frame (diagonal 43.3 mm vs 43.3 mm).

What size is the Canon EOS R6 Mark III sensor?

36.0 × 24.0 mm (Full frame (35 mm)), an area of 864 mm² — 100% of full frame.

Is the Canon EOS R6 Mark III full frame?

Yes — its sensor is the same 36 × 24 mm size as 35 mm film.

How many megapixels does the Canon EOS R6 Mark III have?

32.5 megapixels (6,960 × 4,640 pixels), enough for a 23 × 15 inch print at 300 DPI.

What lens mount does the Canon EOS R6 Mark III use?

The Canon EOS R6 Mark III uses the Canon RF (flange distance 20.00 mm).

How long can I expose the night sky with the Canon EOS R6 Mark III?

With a 20 mm lens (20 mm equivalent) the 500 rule gives 25 s and the stricter NPF rule at f/2.8 gives 13 s.

Sources & licences#

Wikipedia: Canon EOS R6 Mark III — CC BY-SA 4.0
Wikidata Q136721340 — CC0
Lensfun camera database — CC BY-SA 3.0

Last updated October 03, 2026 · How we calculate · Sources