Canon EOS 850D vs Canon EOS 1Ds Mark III

This is a full comparison between the cameras Canon EOS 850D and Canon EOS 1Ds Mark III. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Canon.

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Canon EOS 850D has a "Canon APS-C"-sensor while Canon EOS 1Ds Mark III has a "Canon Full Frame"-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)

Resolution

Canon EOS 850D has a 24 MP (Megapixels) resolution while Canon EOS 1Ds Mark III has 21,1 MP. If we break down this in more detail this is the data behind the numbers:

Canon EOS 850D has a 14 % larger resolution than Canon EOS 1Ds Mark III. 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

Canon EOS 850D has a larger ISO-range than Canon EOS 1Ds Mark III. Canon EOS 850D has an ISO range that stretches from 100 to 25600 while Canon EOS 1Ds Mark III has 50 to 3200.

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 850D
Lens compatibility chart for Canon EOS 1Ds Mark III

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS 850D can shoot up to 7,5 pictures per seconds and Canon EOS 1Ds Mark III can shoot up to 5 pictures per seconds.

Ability to record movies

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

When comparing these two cameras there is only one of them that can shoot movies and that is Canon EOS 850D. Unfortunately Canon EOS 1Ds Mark III does not support recording movies and movie clips.

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 1Ds Mark III weighs 1385 gr (equal to 3.05 lb) which is 169% heavier than Canon EOS 850D and its 515 gr (or 1.14 lb).

Canon EOS 850D vs Canon EOS 1Ds Mark III Specs

Below you will find the complete and detailed technical specs for both Canon EOS 850D and Canon EOS 1Ds Mark III, 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 850D	Canon EOS 1Ds Mark III
Name	Canon EOS 850D	Canon EOS 1Ds Mark III
Manufacturer	Canon	Canon
Release Date and Price	Canon EOS 850D	Canon EOS 1Ds Mark III
Release Year	2020	2007
Release Date	2020-02-12	2007-08-20
MSRP	749 USD	6999 USD
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Camera Type	Canon EOS 850D	Canon EOS 1Ds Mark III
Camera Type	DSLR	DSLR
Sensor	Canon EOS 850D	Canon EOS 1Ds Mark III
Sensor Size	APS-C (approx 22.3 x 14.9 mm)	Full Frame (approx 36 x 24 mm)
Sensor Type	CMOS	CMOS
Resolution	6000 x 4000 pixels	5616 x 3744 pixels
Megapixels	24 MP	21,1 MP
Image Processor	DIGIC 8	DUAL DIGIC 3
Image	Canon EOS 850D	Canon EOS 1Ds Mark III
ISO Range	100 - 25600	50 - 3200
White Balance Presets	6	8
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 850D	Canon EOS 1Ds Mark III
Autofocus Motor	Yes	Yes
Autofocus	Contract Detect (sensor) Phase Detect Multi Area Center Selective Single Point Tracking Single Continuous Touch Face Detection LiveView	Phase Detect Multi Area Selective Single Point Single Continuous
Focus Points	45	45
Lens Mount	Canon EF Canon EF-S See Compatible Lenses	Canon EF 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	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 850D	Canon EOS 1Ds Mark III
Articulated LCD	Fully articulated	Fixed
Screen size	3”	3”
Screen dots	1040000	230000
Touch screen	Yes	No
Screen type	TFT LCD	N/A
Live view	Yes	Yes
Viewfinder Type	Optical (pentamirror)	Optical (pentaprism)
Viewfinder Coverage	95%	100%
Viewfinder Magnification	0.82× (0.51× 35mm equiv.)	0.76×
Viewfinder Resolution	0	N/A
Photography features	Canon EOS 850D	Canon EOS 1Ds Mark III
Frames per second	7,5 fps	5 fps
Minimum Shutter Speed	30 seconds	30 seconds
Maximum Shutter Speed	1/4000 seconds	1/8000 seconds
Built-in Flash	Yes	No
Built-in Flash Range	4 meters	N/A
External Flash	Yes	Yes
Self-Timer	Yes	Yes
Time-lapse	Yes	Yes
Metering modes	Multi Center Weighted Spot Partial	Multi Center Weighted Spot Partial
Exposure Compensation	+/- 3 (at 1/3 EV, 1/2 EV steps)	+/- 3 (at 1/3 EV, 1/2 EV steps)
Videography features	Canon EOS 850D	Canon EOS 1Ds Mark III
Video recording	Yes	No
Video format	MPEG4 H.264	N/A
Video resolution	1920 x 1080 3840 x 2160	N/A
Built-in Microphone	Yes	No
Built-in Speakers	Yes	No
Storage	Canon EOS 850D	Canon EOS 1Ds Mark III
Memory Card	SD/SDHC	Compact Flash SD/SDHC
Connectivity	Canon EOS 850D	Canon EOS 1Ds Mark III
HDMI Output	Yes	No
Microphone Port	Yes	No
Headphone Port	No	No
Wireless	Yes Built-in (802.11b/g/n + Bluetooth)	Yes Optional with WFT-E2 II
Remote Control	Yes (via wireless remote or smartphone)	Yes (N3 connector)
GPS	No	No
Body & Dimensions	Canon EOS 850D	Canon EOS 1Ds Mark III
Enviromentally sealed	No	Yes
Battery	Battery Pack	Battery Pack
Battery Details	LP-E17 lithium-ion battery & charger	Canon LP-E4N Battery Pack
Battery Life (CIPA)	800 shots	1800 shots
Width	131 mm	150 mm
Height	103 mm	160 mm
Depth	76 mm	80 mm
Weight	515 gram	1385 gram