Canon EOS 20D Astrophotography vs Nikon D5000

This is a full comparison between the cameras Canon EOS 20D Astrophotography and Nikon D5000. We compare them by looking at the categories you see below.

Manufacturing

Canon EOS 20D Astrophotography is manufacturered by Canon but Nikon D5000 is from Nikon. Both Canon and Nikon are well known brands though.

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Canon EOS 20D Astrophotography has a "Canon APS-C"-sensor while Nikon D5000 has a "Nikon DX"-sensor, and their difference in sensors will also affect the crop factor and experience focal length. See the table below.

** Experienced focal length when using a lens such as a common "50mm f/1.8"

Learn more about crop factor and focal length multiplier here:
Camera selection can affect the focal length (Canon)
Camera selection can affect the focal length (Nikon)

Resolution

Canon EOS 20D Astrophotography has a 8,2 MP (Megapixels) resolution while Nikon D5000 has 12,3 MP. If we break down this in more detail this is the data behind the numbers:

Nikon D5000 has a 49 % larger resolution than Canon EOS 20D Astrophotography. This could give you more details in the picture but also a possibility to crop more in the pictures, afterward while editing the pictures, if needed that is.

ISO range

Nikon D5000 has a larger ISO-range than Canon EOS 20D Astrophotography. Nikon D5000 has an ISO range that stretches from 200 to 6400 while Canon EOS 20D Astrophotography has 100 to 3200.

Autofocus and lens compatibility

There is a big difference between these two cameras. Canon EOS 20D Astrophotography has a built-in autofocus motor but Nikon D5000 does not. If you want to be able to use autofocus on Nikon D5000 there is a need for having an autofocus motor inside the lens. We really encourage you to look closely at our lens compatibility charts at the links below.

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Canon EOS 20D Astrophotography
Lens compatibility chart for Nikon D5000

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS 20D Astrophotography can shoot up to 5 pictures per seconds and Nikon D5000 can shoot up to 4 pictures per seconds.

Ability to record movies

It is becoming more and more popular to record movies with digital cameras.

It is only one of these two cameras that support recording movies and movie clips and that is Nikon D5000. Sadly, the Canon EOS 20D Astrophotography does not support this.

Weight

The weight of the camera can be an extremely important factor, especially if the camera is about to be used, or carried around, for several hours at a time.

Canon EOS 20D Astrophotography weighs 770 gr (equal to 1.7 lb) which is 31% heavier than Nikon D5000 and its 590 gr (or 1.3 lb).

Canon EOS 20D Astrophotography vs Nikon D5000 Specs

Below you will find the complete and detailed technical specs for both Canon EOS 20D Astrophotography and Nikon D5000, next to each other. Each category of data is a link to an article covering the subject, giving you a deeper understanding so you can better understand the strengths and weaknesses of the two camera models.

Product	Canon EOS 20D Astrophotography	Nikon D5000
Name	Canon EOS 20D Astrophotography	Nikon D5000
Manufacturer	Canon	Nikon
Release Date and Price	Canon EOS 20D Astrophotography	Nikon D5000
Release Year	2005	2009
Release Date	2005-06-01	2009-04-14
MSRP	1499 USD	849 USD
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Camera Type	Canon EOS 20D Astrophotography	Nikon D5000
Camera Type	DSLR	DSLR
Sensor	Canon EOS 20D Astrophotography	Nikon D5000
Sensor Size	APS-C (approx 22.3 x 14.9 mm)	APS-C (approx 23.7 x 15.5 mm) Also known as "DX"
Sensor Type	CMOS	CMOS
Resolution	3504 x 2336 pixels	4288 x 2848 pixels
Megapixels	8,2 MP	12,3 MP
Image Processor	DIGIC 2	EXPEED
Image	Canon EOS 20D Astrophotography	Nikon D5000
ISO Range	100 - 3200	200 - 6400
White Balance Presets	6	12
Custom White Balance	Yes	Yes
Image Stabilization	No	No
Image Stabilization CIPA Rating	0 stops	0 stops
Uncompressed format	RAW	RAW
Optics & Focus	Canon EOS 20D Astrophotography	Nikon D5000
Autofocus Motor	Yes	No
Autofocus	Phase Detect Multi Area Selective Single Point Single Continuous	Contract Detect (sensor) Phase Detect Multi Area Selective Single Point Single Continuous Face Detection LiveView
Focus Points	9	11
Lens Mount	Canon EF Canon EF-S See Compatible Lenses	Nikon F See Compatible Lenses
Focal Length Multiplier	APS-C Sensor 1.6x multiplier Example: 24 mm becomes 38 mm 50 mm becomes 80 mm 100 mm becomes 160 mm 200 mm becomes 320 mm	DX / APS-C (1.5x) 1.5x multiplier Example: 24 mm becomes 36 mm 50 mm becomes 75 mm 100 mm becomes 150 mm 200 mm becomes 300 mm
Screen & Viewfinder	Canon EOS 20D Astrophotography	Nikon D5000
Articulated LCD	Fixed	Fully articulated
Screen size	1.8”	2,7”
Screen dots	118000	230000
Touch screen	No	No
Screen type	N/A	N/A
Live view	No	Yes
Viewfinder Type	Optical (pentaprism)	Optical (pentamirror)
Viewfinder Coverage	95%	95%
Viewfinder Magnification	0.9× (0.56× 35mm equiv.)	0.78× (0.52× 35mm equiv.)
Viewfinder Resolution	N/A	N/A
Photography features	Canon EOS 20D Astrophotography	Nikon D5000
Frames per second	5 fps	4 fps
Minimum Shutter Speed	30 seconds	30 seconds
Maximum Shutter Speed	1/8000 seconds	1/4000 seconds
Built-in Flash	Yes	Yes
Built-in Flash Range	12 meters	17 meters
External Flash	Yes	Yes
Self-Timer	Yes	Yes
Time-lapse	Yes	Yes
Metering modes	Multi Center Weighted Partial	Multi Center Weighted Spot
Exposure Compensation	+/- 2 (at 1/3 EV, 1/2 EV steps)	+/- 5 (at 1/3 EV, 1/2 EV steps)
Videography features	Canon EOS 20D Astrophotography	Nikon D5000
Video recording	No	Yes
Video format	N/A	MPEG4
Video resolution	N/A	1280 x 720
Built-in Microphone	No	Yes
Built-in Speakers	No	Yes
Storage	Canon EOS 20D Astrophotography	Nikon D5000
Memory Card	Compact Flash	SD/SDHC
Connectivity	Canon EOS 20D Astrophotography	Nikon D5000
HDMI Output	No	Yes
Microphone Port	No	No
Headphone Port	No	No
Wireless	No	Yes Eye-Fi Connected
Remote Control	Yes (N3 connector)	Yes (Optional (ML-L3))
GPS	No	Yes Optional
Body & Dimensions	Canon EOS 20D Astrophotography	Nikon D5000
Enviromentally sealed	No	No
Battery	Battery Pack	Battery Pack
Battery Details	Battery Pack BP-511A	Nikon EN-EL9a Lithium-Ion battery
Battery Life (CIPA)	1000 shots	510 shots
Width	144 mm	127 mm
Height	106 mm	104 mm
Depth	72 mm	80 mm
Weight	770 gram	590 gram