Specifications#
- Brand
- Canon
- Model
- EOS 800D
- Also known as
- Canon EOS REBEL T7i, Canon EOS Rebel T7i, EOS Rebel T7i
- Camera type
- DSLR
- Released
- 2017-02-15
- Lens mount
- Canon EF-S
- Sensor size
- 22.3 × 14.9 mm (APS-C (Canon))
- Crop factor
- 1.61×
- Resolution
- 24.2 MP (6,000 × 4,000 px)
- Continuous shooting
- 6 fps
- Weight
- 485 g (17.1 oz)
- Sensor type
- CMOS
- Storage
- SD/SDHC/SDXC card (UHS-I bus supported)
- Viewfinder
- Optical pentamirror with 95% coverage and 0.82× magnification / LiveView LCD
- AF points / area
- 45 cross-type AF points
- Metering
- TTL, full aperture, 63 zones sensor with 7560 pixels RGB + IR sensor
- Shutter
- Electronic focal-plane
- Flash
- E-TTL II auto-pop-up built-in / External
- Battery
- Li-Ion LP-E17 rechargeable (1040 mAh); 600 shots (CIPA rating)
- Dimensions
- 131 × 99.9 × 76.2 mm (5.16 × 3.94 × 2.99″) (W × H × D)
- Lens
- Interchangeable
- Predecessor
- Canon EOS 750D
- Successor
- Canon EOS 850D
- Launch price
- US$750
- Drive
- Up to 6 fps (4.5 fps in Live view mode)
Specifications merged from Wikipedia, Wikidata, Lensfun and openMVG. Spot an error? Tell us.
Sensor size compared#
Focal length equivalents & field of view#
Multiply any focal length by 1.61 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 |
|---|---|---|---|---|
| 8 mm | 13 mm | 108.7° | 85.9° | 118.4° |
| 10 mm | 16 mm | 96.2° | 73.4° | 106.6° |
| 12 mm | 19 mm | 85.8° | 63.7° | 96.4° |
| 14 mm | 23 mm | 77.1° | 56.0° | 87.5° |
| 16 mm | 26 mm | 69.7° | 49.9° | 79.9° |
| 18 mm | 29 mm | 63.6° | 45.0° | 73.4° |
| 20 mm | 32 mm | 58.3° | 40.9° | 67.7° |
| 24 mm | 39 mm | 49.8° | 34.5° | 58.4° |
| 28 mm | 45 mm | 43.4° | 29.8° | 51.2° |
| 35 mm | 56 mm | 35.3° | 24.0° | 41.9° |
| 40 mm | 65 mm | 31.2° | 21.1° | 37.1° |
| 50 mm | 81 mm | 25.1° | 16.9° | 30.0° |
| 56 mm | 90 mm | 22.5° | 15.2° | 26.9° |
| 70 mm | 113 mm | 18.1° | 12.2° | 21.7° |
| 85 mm | 137 mm | 14.9° | 10.0° | 17.9° |
| 100 mm | 161 mm | 12.7° | 8.5° | 15.3° |
| 135 mm | 218 mm | 9.4° | 6.3° | 11.3° |
| 200 mm | 323 mm | 6.4° | 4.3° | 7.7° |
| 300 mm | 484 mm | 4.3° | 2.8° | 5.1° |
| 400 mm | 645 mm | 3.2° | 2.1° | 3.8° |
| 600 mm | 968 mm | 2.1° | 1.4° | 2.6° |
| 800 mm | 1291 mm | 1.6° | 1.1° | 1.9° |
Depth of field table#
Total depth of field at each subject distance, using a circle of confusion of 18.6 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 |
|---|---|---|---|---|---|---|---|---|
| 14 mm | f/1.8 | 8.4 cm | 34.7 cm | 1.53 m | 4.14 m | 31.0 m | ∞ | 5.87 m |
| 14 mm | f/2.8 | 13.1 cm | 56.2 cm | 2.92 m | 12.8 m | ∞ | ∞ | 3.78 m |
| 14 mm | f/4 | 19.1 cm | 87.0 cm | 6.98 m | ∞ | ∞ | ∞ | 2.65 m |
| 14 mm | f/8 | 42.7 cm | 3.40 m | ∞ | ∞ | ∞ | ∞ | 1.33 m |
| 27 mm | f/1.8 | 2.2 cm | 9.0 cm | 36.5 cm | 83.5 cm | 2.41 m | 11.6 m | 21.8 m |
| 27 mm | f/2.8 | 3.4 cm | 14.0 cm | 57.5 cm | 1.33 m | 4.06 m | 28.9 m | 14.0 m |
| 27 mm | f/4 | 4.8 cm | 20.1 cm | 83.9 cm | 2.00 m | 6.83 m | ∞ | 9.83 m |
| 27 mm | f/8 | 9.7 cm | 41.3 cm | 1.92 m | 5.76 m | ∞ | ∞ | 4.93 m |
| 46 mm | f/1.8 | 0.7 cm | 3.0 cm | 12.4 cm | 28.1 cm | 78.9 cm | 3.23 m | 63.3 m |
| 46 mm | f/2.8 | 1.1 cm | 4.7 cm | 19.3 cm | 43.8 cm | 1.24 m | 5.21 m | 40.7 m |
| 46 mm | f/4 | 1.6 cm | 6.7 cm | 27.6 cm | 63.0 cm | 1.80 m | 7.97 m | 28.5 m |
| 46 mm | f/8 | 3.2 cm | 13.5 cm | 56.0 cm | 1.30 m | 3.96 m | 27.4 m | 14.3 m |
| 76 mm | f/1.8 | 0.2 cm | 1.1 cm | 4.5 cm | 10.2 cm | 28.6 cm | 1.15 m | 173 m |
| 76 mm | f/2.8 | 0.4 cm | 1.7 cm | 6.9 cm | 15.8 cm | 44.5 cm | 1.80 m | 111 m |
| 76 mm | f/4 | 0.5 cm | 2.4 cm | 9.9 cm | 22.6 cm | 63.7 cm | 2.60 m | 77.7 m |
| 76 mm | f/8 | 1.1 cm | 4.8 cm | 19.9 cm | 45.4 cm | 1.29 m | 5.47 m | 38.9 m |
Equivalent aperture#
Exposure is identical at the same f-number on any format; equivalence only describes depth of field and total light.
Diffraction & pixel pitch#
With 3.72 µm pixels, diffraction starts to soften pixel-level detail around f/5.5. For maximum sharpness keep landscapes between f/3.0 and f/6; stopping down further trades detail for depth of field.
| Aperture | Airy disk diameter | Spread over | At 100% view |
|---|---|---|---|
| f/2.8 | 3.8 µm | 1.0 px | sharp |
| f/4 | 5.4 µm | 1.4 px | sharp |
| f/5.6 | 7.5 µm | 2.0 px | slight softening |
| f/8 | 10.7 µm | 2.9 px | slight softening |
| f/11 | 14.8 µm | 4.0 px | visibly soft |
| f/16 | 21.5 µm | 5.8 px | visibly soft |
| f/22 | 29.5 µm | 7.9 px | visibly soft |
Maximum print sizes#
At 24.2 MP the Canon EOS 800D produces 6,000 × 4,000 pixel images. See the 24 megapixel guide or the print size calculator.
| Resolution | Typical use | Inches | Centimetres |
|---|---|---|---|
| 300 DPI | Photo-lab quality | 20.0 × 13.3 in | 51 × 34 cm |
| 240 DPI | Fine-art inkjet | 25.0 × 16.7 in | 64 × 42 cm |
| 200 DPI | Wall print | 30.0 × 20.0 in | 76 × 51 cm |
| 150 DPI | Poster, viewed from 1 m+ | 40.0 × 26.7 in | 102 × 68 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 |
|---|---|---|---|---|
| 9 mm (15 mm eq.) | 34.4 s | 19.4 s | 23.3 s | 27.9 s |
| 12 mm (19 mm eq.) | 25.8 s | 14.5 s | 17.5 s | 21.0 s |
| 15 mm (24 mm eq.) | 20.7 s | 11.6 s | 14.0 s | 16.8 s |
| 22 mm (35 mm eq.) | 14.1 s | 7.9 s | 9.5 s | 11.4 s |
| 31 mm (50 mm eq.) | 10.0 s | 5.6 s | 6.8 s | 8.1 s |
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 |
|---|---|---|---|
| 15 mm | 1/25 s | 0.3 s | 1.3 s |
| 31 mm | 1/50 s | 1/6 s | 0.6 s |
| 62 mm | 1/100 s | 1/13 s | 0.3 s |
| 124 mm | 1/200 s | 1/25 s | 1/6 s |
Lenses for the Canon EOS 800D#
Native Canon EF-S lenses in our database (29 total). Also adaptable: T-mount (T2), Canon EF, M42 screw mount, Deckel (DKL), Tamron Adaptall, M39 / LTM (Leica thread).
- Canon EF-S 18-135mm f/3.5-5.6 IS 18–135 mm
- Canon EF-S 18-135mm f/3.5-5.6 IS STM 18–135 mm
- Canon EF-S 55-250mm f/4-5.6 IS STM 55–250 mm
- Canon EF-S 60mm f/2.8 Macro USM 60 mm
- Canon EF 75-300mm F4-5.6 III 75–300 mm
- Canon EF-S 10-18mm f/4.5-5.6 IS STM 10–18 mm
- Canon EF-S 10-22mm f/3.5-4.5 USM 10–22 mm
- Sigma 10-20mm f/3.5 EX DC HSM 10–20 mm
- Tokina atx-i 11-16mm F2.8 CF 11–16 mm
- Canon EF-S 15-85mm f/3.5-5.6 IS USM 15–85 mm
- Canon EF-S 17-55mm f/2.8 IS USM 17–55 mm
- Canon EF-S 17-85mm f/4-5.6 IS USM 17–85 mm
- Canon EF-S 18-135mm f/3.5-5.6 IS USM 18–135 mm
- Canon EF-S 18-200mm f/3.5-5.6 IS 18–200 mm
- Canon EF-S 18-55mm f/3.5-5.6 18–55 mm
- Canon EF-S 18-55mm f/3.5-5.6 II 18–55 mm
- Canon EF-S 18-55mm f/3.5-5.6 III 18–55 mm
- Canon EF-S 18-55mm f/3.5-5.6 IS 18–55 mm
- Canon EF-S 18-55mm f/3.5-5.6 IS II 18–55 mm
- Canon EF-S 18-55mm f/3.5-5.6 IS STM 18–55 mm
- Canon EF-S 18-55mm f/4-5.6 IS STM 18–55 mm
- Sigma 18-200mm f/3.5-6.3 DC Macro OS HSM 18–200 mm
- Canon EF-S 24mm f/2.8 STM 24 mm
- Samyang 35mm f/1.4 AS UMC 35 mm
- Canon EF-S 55-250mm f/4-5.6 IS 55–250 mm
- Canon EF-S 55-250mm f/4-5.6 IS II 55–250 mm
- Sigma 60-600mm F4.5-6.3 DG OS HSM | Sports 018 60–600 mm
- Sigma 60-600mm F4.5-6.3 DG OS HSM | Sports 018 + 1.4× ext. 60–600 mm
- Sigma 90mm f/2.8 Macro AF 90 mm
Frequently asked questions#
What is the crop factor of the Canon EOS 800D?
The Canon EOS 800D has a crop factor of 1.61× relative to 35 mm full frame (diagonal 26.8 mm vs 43.3 mm).
What size is the Canon EOS 800D sensor?
22.3 × 14.9 mm (APS-C (Canon)), an area of 332 mm² — 38% of full frame.
Is the Canon EOS 800D full frame?
No — its sensor is APS-C (Canon), which is 2.6× smaller in area than full frame.
How many megapixels does the Canon EOS 800D have?
24.2 megapixels (6,000 × 4,000 pixels), enough for a 20 × 13 inch print at 300 DPI.
What lens mount does the Canon EOS 800D use?
The Canon EOS 800D uses the Canon EF-S (flange distance 44.00 mm).
How long can I expose the night sky with the Canon EOS 800D?
With a 12 mm lens (19 mm equivalent) the 500 rule gives 26 s and the stricter NPF rule at f/2.8 gives 17 s.
Sources & licences#
- Wikipedia: Canon EOS 800D — CC BY-SA 4.0
- Wikidata Q28790013 — CC0
- Lensfun camera database — CC BY-SA 3.0
- openMVG sensor width database — MPL-2.0
Last updated October 03, 2026 · How we calculate · Sources