Canon EOS 20D Astrophotography vs Nikon D6

This is a full comparison between the cameras Canon EOS 20D Astrophotography and Nikon D6. We compare them by looking at the categories you see below.

Manufacturing

Canon EOS 20D Astrophotography is manufacturered by Canon but Nikon D6 is from Nikon. Both Canon and Nikon are well known brands though.

Canon EOS 20D Astrophotography were released 2005 and Nikon D6 was released 2020. That is a 15 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Canon EOS 20D Astrophotography 2005
Nikon D6 2020

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 D6 has a "Nikon FX"-sensor, and their difference in sensors will also affect the crop factor and experience focal length. See the table below.

Camera Focal length, 50mm f/1.8 **
Canon EOS 20D Astrophotography 80 mm
Canon APS-C sensor
Crop factor/focal length multiplier by * 1.6
Nikon D6 50 mm
Full-frame sensor
No crop factor/focal length multiplier

** 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 D6 has 21 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Canon EOS 20D Astrophotography 8,2 MP
8185344 pixels
3504 x 2336
Nikon D6 21 MP
20668416 pixels
5568 x 3712

Nikon D6 has a 153 % 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 D6 has a larger ISO-range than Canon EOS 20D Astrophotography. Nikon D6 has an ISO range that stretches from 100 to 102400 while Canon EOS 20D Astrophotography has 100 to 3200.

Camera ISO Range
Canon EOS 20D Astrophotography 100-3200
Nikon D6 100-102400

Autofocus and lens compatibility

Both of these cameras have a built-in autofocus motor. Some lenses, that support autofocus, do not have an autofocus motor of their own but this won't cause any problems with these two cameras.

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 D6

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 D6 can shoot up to 14 pictures per seconds.

Camera FPS (Frames per second)
Canon EOS 20D Astrophotography 5
Nikon D6 14

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 D6. 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.

Nikon D6 weighs 1270 gr (equal to 2.8 lb) which is 65% heavier than Canon EOS 20D Astrophotography and its 770 gr (or 1.7 lb).

Camera Weight
Canon EOS 20D Astrophotography 770 gr
1.7 lb
Nikon D6 1270 gr
2.8 lb

Canon EOS 20D Astrophotography vs Nikon D6 Specs

Below you will find the complete and detailed technical specs for both Canon EOS 20D Astrophotography and Nikon D6, 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 D6
Name Canon EOS 20D Astrophotography Nikon D6
Manufacturer Canon Nikon
Release Date and Price
Canon EOS 20D Astrophotography
Nikon D6
Release Year 2005 2020
Release Date 2005-06-01 2019-09-04
MSRP 1499 USD 6499 USD
Buy it today
Camera Type
Canon EOS 20D Astrophotography
Nikon D6
Camera Type DSLR DSLR
Sensor
Canon EOS 20D Astrophotography
Nikon D6
Sensor Size APS-C (approx 22.3 x 14.9 mm) Full Frame (approx 36 x 23.9 mm)
Also known as "FX"
Sensor Type CMOS CMOS
Resolution 3504 x 2336 pixels 5568 x 3712 pixels
Megapixels 8,2 MP 21 MP
Image Processor DIGIC 2 EXPEED 6
Image
Canon EOS 20D Astrophotography
Nikon D6
ISO Range 100 - 3200 100 - 102400
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 D6
Autofocus Motor Yes Yes
Autofocus Phase Detect
Multi Area
Selective Single Point
Single
Continuous
Contract Detect (sensor)
Phase Detect
Multi Area
Center
Selective Single Point
Tracking
Single
Continuous
Touch
Face Detection
LiveView
Focus Points 9 105
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
FX (Full frame)
No multiplier
Example:
24 mm remains 24 mm
50 mm remains 50 mm
100 mm remains 100 mm
200 mm remains 200 mm
Screen & Viewfinder
Canon EOS 20D Astrophotography
Nikon D6
Articulated LCD Fixed Fixed
Screen size 1.8” 3.2”
Screen dots 118000 2359000
Touch screen No Yes
Screen type N/A TFT LCD
Live view No Yes
Viewfinder Type Optical (pentaprism) Optical (pentaprism)
Viewfinder Coverage 95% 100%
Viewfinder Magnification 0.9× (0.56× 35mm equiv.) 0.72x
Viewfinder Resolution N/A 0
Photography features
Canon EOS 20D Astrophotography
Nikon D6
Frames per second 5 fps 14 fps
Minimum Shutter Speed 30 seconds 900 seconds
Maximum Shutter Speed 1/8000 seconds 1/8000 seconds
Built-in Flash Yes No
Built-in Flash Range 12 meters N/A
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse Yes Yes
Metering modes Multi
Center Weighted
Partial
Multi
Center Weighted
Highlight Weighted
Spot
Exposure Compensation +/- 2 (at 1/3 EV, 1/2 EV steps) +/- 5 (at 1/3 EV, 1/2 EV, 1 EV steps)
Videography features
Canon EOS 20D Astrophotography
Nikon D6
Video recording No Yes
Video format N/A MPEG4
H.264
Video resolution N/A 1920 x 1080
3840 x 2160
Built-in Microphone No Yes
Built-in Speakers No Yes
Storage
Canon EOS 20D Astrophotography
Nikon D6
Memory Card Compact Flash
Compact Flash Express
XQD
Connectivity
Canon EOS 20D Astrophotography
Nikon D6
HDMI Output No Yes
Microphone Port No Yes
Headphone Port No Yes
Wireless No Yes
Built-in (802.11ac + Bluetooth)
Remote Control Yes (N3 connector) Yes (Wired or smartphone)
GPS No Yes
Built-in
Body & Dimensions
Canon EOS 20D Astrophotography
Nikon D6
Enviromentally sealed No Yes
Battery Battery Pack Battery Pack
Battery Details Battery Pack BP-511A
EN-EL18c lithium-ion battery & charager
Battery Life (CIPA) 1000 shots 3580 shots
Width 144 mm 160 mm
Height 106 mm 163 mm
Depth 72 mm 92 mm
Weight 770 gram 1270 gram