DSLR · 2009

Canon EOS-1D Mark IV

The Canon EOS-1D Mark IV is a DSLR from 2009 with a APS-H sensor measuring 27.9 × 18.6 mm and 16.1 megapixels. Its crop factor is 1.29×, so a 50 mm lens frames like 65 mm on full frame. Every number below is calculated for this exact sensor.

APS-H1.29× crop16.1 MPCanon EF
Canon EOS-1D Mark IV camera
Photo: Jesse Yardley, CC BY 2.0, via Wikimedia Commons
1.29×
Crop factor
27.9×18.6 mm
Sensor size
519 mm²
Area · 60% of full frame
16.1 MP
Resolution
5.70 µm
Pixel pitch
f/8.5
Diffraction-limited aperture
2009
Release year

Specifications#

Brand
Canon
Model
EOS-1D Mark IV
Camera type
DSLR
Released
2009-01-01
Lens mount
Canon EF
Sensor size
27.9 × 18.6 mm (APS-H)
Crop factor
1.29×
Resolution
16.1 MP (4,896 × 3,264 px)
Continuous shooting
10 fps
Weight
1,180 g (41.6 oz)
Sensor
27.9mm × 18.6mm ; (1.3x conversion factor) ; CMOS, APS-H Format ; (16.1 effective megapixels)
Storage
CompactFlash (Type I or Type II), Secure Digital 32 GB Max
Viewfinder
100% coverage optical pentaprism
AF points / area
45 AF points with 39 cross-type AF points
Metering
63-zone TTL full aperture metering
Shutter
Vertical-travel, mechanical, focal-plane shutter with all speeds electronically controlled
Lens
Interchangeable
Successor
Canon EOS-1D X
Predecessor
Canon EOS-1D Mark III
Launch price
US$4999.00
Drive
10fps up to 28/121 frames (raw/JPEG Large Fine)

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

Sensor size compared#

Medium format 44 × 33 mmFull frame (35 mm)Canon EOS-1D Mark IVAPS-CFour Thirds / Micro Four Thirds1" (one-inch) sensor
The Canon EOS-1D Mark IV sensor (highlighted) drawn to scale against common formats. Its area is 60% of a full-frame sensor, which collects about 0.7 stops less total light at the same exposure.

Focal length equivalents & field of view#

Multiply any focal length by 1.29 to get the full-frame field of view. Angles are for a rectilinear lens focused at infinity.

Lens on this cameraFull-frame equivalentHorizontalVerticalDiagonal
8 mm10 mm120.3°98.6°129.0°
10 mm13 mm108.7°85.8°118.4°
12 mm15 mm98.6°75.6°108.8°
14 mm18 mm89.8°67.2°100.3°
16 mm21 mm82.2°60.3°92.7°
18 mm23 mm75.6°54.6°85.9°
20 mm26 mm69.8°49.9°79.9°
24 mm31 mm60.3°42.4°69.9°
28 mm36 mm53.0°36.7°61.8°
35 mm45 mm43.5°29.8°51.2°
40 mm52 mm38.5°26.2°45.5°
50 mm65 mm31.2°21.1°37.1°
56 mm72 mm28.0°18.9°33.3°
70 mm90 mm22.5°15.1°26.9°
85 mm110 mm18.6°12.5°22.3°
100 mm129 mm15.9°10.6°19.0°
135 mm174 mm11.8°7.9°14.2°
200 mm258 mm8.0°5.3°9.6°
300 mm387 mm5.3°3.6°6.4°
400 mm516 mm4.0°2.7°4.8°
600 mm774 mm2.7°1.8°3.2°
800 mm1032 mm2.0°1.3°2.4°

Depth of field table#

Total depth of field at each subject distance, using a circle of confusion of 23.2 µm (the 0.030 mm full-frame standard scaled by the crop factor).

FocalAperture50.0 cm1.00 m2.00 m3.00 m5.00 m10.0 mHyperfocal
17 mmf/1.87.0 cm29.1 cm1.25 m3.19 m15.1 m∞6.92 m
17 mmf/2.811.0 cm46.6 cm2.23 m7.35 m∞∞4.46 m
17 mmf/415.9 cm70.3 cm4.31 m73.3 m∞∞3.12 m
17 mmf/834.4 cm2.11 m∞∞∞∞1.57 m
34 mmf/1.81.7 cm7.0 cm28.6 cm65.2 cm1.86 m8.30 m27.7 m
34 mmf/2.82.6 cm10.9 cm44.8 cm1.03 m3.03 m16.4 m17.8 m
34 mmf/43.8 cm15.6 cm64.9 cm1.52 m4.75 m44.9 m12.5 m
34 mmf/87.5 cm31.9 cm1.41 m3.71 m22.1 m∞6.25 m
58 mmf/1.80.5 cm2.3 cm9.7 cm22.0 cm61.7 cm2.51 m80.4 m
58 mmf/2.80.9 cm3.6 cm15.1 cm34.3 cm96.5 cm4.00 m51.7 m
58 mmf/41.2 cm5.2 cm21.5 cm49.1 cm1.39 m5.95 m36.2 m
58 mmf/82.4 cm10.4 cm43.5 cm1.00 m2.95 m15.8 m18.1 m
95 mmf/1.80.2 cm0.8 cm3.5 cm8.1 cm22.8 cm92.1 cm216 m
95 mmf/2.80.3 cm1.3 cm5.5 cm12.6 cm35.4 cm1.44 m139 m
95 mmf/40.4 cm1.9 cm7.9 cm18.0 cm50.7 cm2.06 m97.1 m
95 mmf/80.8 cm3.7 cm15.7 cm36.1 cm1.02 m4.26 m48.6 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 cameraFull-frame equivalent (depth of field)Hyperfocal at 34 mm
f/1.2f/1.541.5 m
f/1.4f/1.835.5 m
f/1.8f/2.327.7 m
f/2f/2.624.9 m
f/2.8f/3.617.8 m
f/4f/5.212.5 m
f/5.6f/7.28.91 m
f/8f/10.36.25 m

Diffraction & pixel pitch#

With 5.70 µm pixels, diffraction starts to soften pixel-level detail around f/8.5. For maximum sharpness keep landscapes between f/4.7 and f/8; stopping down further trades detail for depth of field.

ApertureAiry disk diameterSpread overAt 100% view
f/2.83.8 µm0.7 pxsharp
f/45.4 µm0.9 pxsharp
f/5.67.5 µm1.3 pxsharp
f/810.7 µm1.9 pxsharp
f/1114.8 µm2.6 pxslight softening
f/1621.5 µm3.8 pxvisibly soft
f/2229.5 µm5.2 pxvisibly soft

Maximum print sizes#

At 16.1 MP the Canon EOS-1D Mark IV produces 4,896 × 3,264 pixel images. See the 16 megapixel guide or the print size calculator.

ResolutionTypical useInchesCentimetres
300 DPIPhoto-lab quality16.3 × 10.9 in41 × 28 cm
240 DPIFine-art inkjet20.4 × 13.6 in52 × 35 cm
200 DPIWall print24.5 × 16.3 in62 × 41 cm
150 DPIPoster, viewed from 1 m+32.6 × 21.8 in83 × 55 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 length500 ruleNPF f/1.8NPF f/2.8NPF f/4
11 mm (14 mm eq.)35.2 s21.3 s24.5 s28.3 s
15 mm (19 mm eq.)25.8 s15.6 s17.9 s20.7 s
19 mm (25 mm eq.)20.4 s12.3 s14.2 s16.4 s
27 mm (35 mm eq.)14.4 s8.7 s10.0 s11.5 s
39 mm (50 mm eq.)9.9 s6.0 s6.9 s8.0 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 lengthNo stabilisation (1/equiv. focal)With 3-stop ISWith 5-stop IBIS
19 mm1/25 s0.3 s1.3 s
39 mm1/50 s1/6 s0.6 s
77 mm1/100 s1/13 s0.3 s
155 mm1/200 s1/25 s1/6 s

Frequently asked questions#

What is the crop factor of the Canon EOS-1D Mark IV?

The Canon EOS-1D Mark IV has a crop factor of 1.29× relative to 35 mm full frame (diagonal 33.5 mm vs 43.3 mm).

What size is the Canon EOS-1D Mark IV sensor?

27.9 × 18.6 mm (APS-H), an area of 519 mm² — 60% of full frame.

Is the Canon EOS-1D Mark IV full frame?

No — its sensor is APS-H, which is 1.7× smaller in area than full frame.

How many megapixels does the Canon EOS-1D Mark IV have?

16.1 megapixels (4,896 × 3,264 pixels), enough for a 16 × 11 inch print at 300 DPI.

What lens mount does the Canon EOS-1D Mark IV use?

The Canon EOS-1D Mark IV uses the Canon EF (flange distance 44.00 mm).

How long can I expose the night sky with the Canon EOS-1D Mark IV?

With a 15 mm lens (19 mm equivalent) the 500 rule gives 26 s and the stricter NPF rule at f/2.8 gives 18 s.

Sources & licences#

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