Specifications#
- Brand
- Canon
- Model
- EOS 20D
- Camera type
- DSLR
- Released
- 2004-01-01
- Lens mount
- Canon EF-S
- Sensor size
- 22.5 × 15.0 mm (APS-C (Canon))
- Crop factor
- 1.60×
- Resolution
- 8.2 MP (3,520 × 2,344 px)
- Continuous shooting
- 5 fps
- Weight
- 685 g (24.2 oz)
- Sensor
- 22.5 mm × 15.0 mm CMOS
- Storage
- CompactFlash (CF) (Type I or Type II) and Microdrive (MD) / max 8GB (The camera can format up to 8GB, but can use larger cards. )
- Viewfinder
- Optical, pentaprism
- AF points / area
- 9 autofocus points
- Metering
- TTL full aperture, 35 area evaluative, partial, center-weighted
- Exposure modes
- Full auto, programmed, shutter-priority, aperture priority, manual
- Shutter
- Vertical travel, focal-plane shutter, all speeds electronically controlled
- Flash
- Auto pop-up E-TTL II (retractable)
- Battery
- Main battery Li-Ion BP-511A rechargeable battery pack; internal memory battery CR2016 supports clock, frame counter
- Dimensions
- 144 x 105.5 x 71.5 mm
- Lens
- Interchangeable
- Predecessor
- Canon EOS 10D
- Successor
- Canon EOS 30D
- Drive
- 5.0 frame/s, up to 23 frames (6 in RAW)
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 1.60 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 | 109.2° | 86.3° | 118.8° |
| 10 mm | 16 mm | 96.7° | 73.7° | 107.0° |
| 12 mm | 19 mm | 86.3° | 64.0° | 96.8° |
| 14 mm | 22 mm | 77.6° | 56.4° | 88.0° |
| 16 mm | 26 mm | 70.2° | 50.2° | 80.4° |
| 18 mm | 29 mm | 64.0° | 45.2° | 73.8° |
| 20 mm | 32 mm | 58.7° | 41.1° | 68.1° |
| 24 mm | 38 mm | 50.2° | 34.7° | 58.8° |
| 28 mm | 45 mm | 43.8° | 30.0° | 51.6° |
| 35 mm | 56 mm | 35.6° | 24.2° | 42.2° |
| 40 mm | 64 mm | 31.4° | 21.2° | 37.4° |
| 50 mm | 80 mm | 25.4° | 17.1° | 30.3° |
| 56 mm | 90 mm | 22.7° | 15.3° | 27.1° |
| 70 mm | 112 mm | 18.3° | 12.2° | 21.9° |
| 85 mm | 136 mm | 15.1° | 10.1° | 18.1° |
| 100 mm | 160 mm | 12.8° | 8.6° | 15.4° |
| 135 mm | 216 mm | 9.5° | 6.4° | 11.4° |
| 200 mm | 320 mm | 6.4° | 4.3° | 7.7° |
| 300 mm | 480 mm | 4.3° | 2.9° | 5.2° |
| 400 mm | 640 mm | 3.2° | 2.1° | 3.9° |
| 600 mm | 960 mm | 2.1° | 1.4° | 2.6° |
| 800 mm | 1280 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 18.8 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 | 35.0 cm | 1.55 m | 4.19 m | 32.7 m | ∞ | 5.82 m |
| 14 mm | f/2.8 | 13.2 cm | 56.8 cm | 2.97 m | 13.3 m | ∞ | ∞ | 3.75 m |
| 14 mm | f/4 | 19.3 cm | 88.0 cm | 7.20 m | ∞ | ∞ | ∞ | 2.63 m |
| 14 mm | f/8 | 43.2 cm | 3.50 m | ∞ | ∞ | ∞ | ∞ | 1.32 m |
| 27 mm | f/1.8 | 2.2 cm | 9.0 cm | 36.8 cm | 84.2 cm | 2.43 m | 11.7 m | 21.6 m |
| 27 mm | f/2.8 | 3.4 cm | 14.1 cm | 58.0 cm | 1.35 m | 4.11 m | 29.7 m | 13.9 m |
| 27 mm | f/4 | 4.9 cm | 20.2 cm | 84.7 cm | 2.02 m | 6.93 m | ∞ | 9.75 m |
| 27 mm | f/8 | 9.8 cm | 41.7 cm | 1.94 m | 5.87 m | ∞ | ∞ | 4.89 m |
| 46 mm | f/1.8 | 0.7 cm | 3.0 cm | 12.5 cm | 28.3 cm | 79.5 cm | 3.26 m | 62.7 m |
| 46 mm | f/2.8 | 1.1 cm | 4.7 cm | 19.4 cm | 44.2 cm | 1.25 m | 5.26 m | 40.4 m |
| 46 mm | f/4 | 1.6 cm | 6.8 cm | 27.8 cm | 63.5 cm | 1.81 m | 8.06 m | 28.3 m |
| 46 mm | f/8 | 3.2 cm | 13.6 cm | 56.5 cm | 1.31 m | 4.01 m | 28.1 m | 14.2 m |
| 76 mm | f/1.8 | 0.2 cm | 1.1 cm | 4.5 cm | 10.3 cm | 28.8 cm | 1.16 m | 171 m |
| 76 mm | f/2.8 | 0.4 cm | 1.7 cm | 7.0 cm | 16.0 cm | 44.8 cm | 1.82 m | 110 m |
| 76 mm | f/4 | 0.6 cm | 2.4 cm | 10.0 cm | 22.8 cm | 64.2 cm | 2.62 m | 77.1 m |
| 76 mm | f/8 | 1.1 cm | 4.8 cm | 20.0 cm | 45.8 cm | 1.30 m | 5.52 m | 38.6 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 6.39 µm pixels, diffraction starts to soften pixel-level detail around f/9.5. For maximum sharpness keep landscapes between f/5.2 and f/10; stopping down further trades detail for depth of field.
| Aperture | Airy disk diameter | Spread over | At 100% view |
|---|---|---|---|
| f/2.8 | 3.8 µm | 0.6 px | sharp |
| f/4 | 5.4 µm | 0.8 px | sharp |
| f/5.6 | 7.5 µm | 1.2 px | sharp |
| f/8 | 10.7 µm | 1.7 px | sharp |
| f/11 | 14.8 µm | 2.3 px | slight softening |
| f/16 | 21.5 µm | 3.4 px | visibly soft |
| f/22 | 29.5 µm | 4.6 px | visibly soft |
Maximum print sizes#
At 8.2 MP the Canon EOS 20D produces 3,520 × 2,344 pixel images. See the 8 megapixel guide or the print size calculator.
| Resolution | Typical use | Inches | Centimetres |
|---|---|---|---|
| 300 DPI | Photo-lab quality | 11.7 × 7.8 in | 30 × 20 cm |
| 240 DPI | Fine-art inkjet | 14.7 × 9.8 in | 37 × 25 cm |
| 200 DPI | Wall print | 17.6 × 11.7 in | 45 × 30 cm |
| 150 DPI | Poster, viewed from 1 m+ | 23.5 × 15.6 in | 60 × 40 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 (14 mm eq.) | 34.7 s | 28.3 s | 32.2 s | 36.9 s |
| 12 mm (19 mm eq.) | 26.0 s | 21.2 s | 24.1 s | 27.6 s |
| 15 mm (24 mm eq.) | 20.8 s | 17.0 s | 19.3 s | 22.1 s |
| 22 mm (35 mm eq.) | 14.2 s | 11.6 s | 13.2 s | 15.1 s |
| 31 mm (50 mm eq.) | 10.1 s | 8.2 s | 9.3 s | 10.7 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 |
| 125 mm | 1/200 s | 1/25 s | 1/6 s |
Lenses for the Canon EOS 20D#
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 20D?
The Canon EOS 20D has a crop factor of 1.60× relative to 35 mm full frame (diagonal 27.0 mm vs 43.3 mm).
What size is the Canon EOS 20D sensor?
22.5 × 15.0 mm (APS-C (Canon)), an area of 338 mm² — 39% of full frame.
Is the Canon EOS 20D 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 20D have?
8.2 megapixels (3,520 × 2,344 pixels), enough for a 12 × 8 inch print at 300 DPI.
What lens mount does the Canon EOS 20D use?
The Canon EOS 20D uses the Canon EF-S (flange distance 44.00 mm).
How long can I expose the night sky with the Canon EOS 20D?
With a 12 mm lens (19 mm equivalent) the 500 rule gives 26 s and the stricter NPF rule at f/2.8 gives 24 s.
Sources & licences#
- Wikipedia: Canon EOS 20D — CC BY-SA 4.0
- Wikidata Q64029 — 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