Canon EOS 70D vs Pentax K-x

In this comparison, we will evaluate the Canon EOS 70D and the Pentax K-x, highlighting the advantages of each over the other, discussing their pros and cons, shared strengths and weaknesses, and providing a rating based on their available features and specifications to assist you in choosing the one that best suits your needs.

Canon EOS 70D was introduced in October 2013 and Pentax K-x was introduced in December 2009. Let us first list highlights of the models.

Now that we've looked at the most essential specifications and gained a basic understanding of these cameras, we can delve into more details and see the differences between them.

This section shows those features and specifications which are the reason to choose Canon EOS 70D over Pentax K-x.

This section shows those features and specifications which are the reason to choose Pentax K-x over Canon EOS 70D.

We already listed pros and cons of each model. However, you may also find useful to look at their common strengths and weaknesses shown side-by-side.

Screen

Canon EOS 70D has a 3.0" Fully Articulated screen with 1,040k dot resolution and Pentax K-x has a 2.7" Fixed screen with 230k dot resolution. Fully articulated screen makes Canon EOS 70D selfie and vlogger friendly and generally very useful for video shooting. Canon EOS 70D also features touchscreen which has advantages such as easy menu navigation, intuitive controls, quick setting adjustment and most importantly a Touch-to-Focus functionality allowing users to select a specific point on the screen where they want the camera to focus. This feature can be helpful for achieving precise focus in both photo and video recording.

Viewfinder

Canon EOS 70D has a built-in Optical (pentaprism) viewfinderPentax K-x has a built-in Optical (pentamirror) viewfinder. Canon EOS 70D has 98% coverage with 0.95x (0.59x 35mm equivalent) magnification and Pentax K-x has 96% coverage with 0.85x (0.57x 35mm equivalent) magnification.

Canon EOS 70D features a 20.2 megapixel APS-C CMOS sensor with dimensions of 22.5 x 15 mm and a total area of 337.5 mm². Its native ISO range is 100 - 12,800 and expands to 100 - 25,600 in boosted mode. Pentax K-x features a 12.6 megapixel APS-C CMOS sensor with dimensions of 23.4 x 15.6 mm and a total area of 243.4 mm². Its native ISO range is 100 - 6,400 and expands to 100 - 12,800 in boosted mode.

Here is a sensor size comparison chart where you can see how different sensors compare with each other:

Sensor size chart

	Sensor	Dimensions	Area	Aspect Ratio	Crop Factor
	Medium Format	44 x 33 mm	1452 mm2	4:3	0.79x
	Full Frame	36 x 24 mm	864 mm2	3:2	1x
	APS-H	27 x 18 mm	486 mm2	3:2	1.3x
	APS-C	23.6 x 15.6 mm	368.2 mm2	3:2	1.5x
	APS-C (Canon)	22.3 x 14.9 mm	332.3 mm2	3:2	1.6x
	Micro Four Thirds	17.4 x 13 mm	226.2 mm2	4:3	2x
	1-inch	13.2 x 8.8 mm	116.2 mm2	3:2	2.7x
	1/1.7-inch	7.44 x 5.58 mm	41.5 mm2	4:3	4.7x
	1/2.3-inch	6.17 x 4.55 mm	28.1 mm2	4:3	5.6x

Canon EOS 70D is equipped with DIGIC 5+ processor and can take pictures up to 5472 x 3648 resolution. It can also take pictures with lower resolution like 3468x2432, 2736x1824, 1920x1280, 720x480, 4864x3648, 3248x2432, 2432x1824, 1696x1280, 640x480,5472x3072, 3468x2048, 2736x1536, 1920x1080, 720x408, 3648x3648, 2432x2432, 1824x1824, 1280x1280, 480x480 with 1:1, 4:3, 3:2, 16:9 aspect ratios. Pentax K-x is equipped with PRIME processor and can take pictures up to 4288 x 2848 resolution. It can also take pictures with lower resolution like 3936 x 2684, 3072 x 2048, 1728 x 1152 with 3:2 aspect ratios.

Lens Mount

Canon EOS 70D has Canon EF/EF-S lens mount and Pentax K-x has Pentax K_AF2 lens mount. They both have APS-C sensor but because of a small size difference their crop factors (also called lens multiplier) differ from each other. Canon EOS 70D has the crop factor of 1.6x which means that a 35mm equivalent focal length of the mounted lens will be equal to its actual focal length times 1.6. Pentax K-x has the crop factor of 1.5x which means that a 35mm equivalent focal length of the mounted lens will be equal to its actual focal length times 1.5.

In-Body Image Stabilization on Pentax K-x

Pentax K-x has a built-in Sensor Shift in-body image stabilization (IBIS). This means that you are still getting vibration reduction when camera is paired with non-image stabilizied lenses. It also works with lenses with optical image stabilization and in combination can achieve even better compensation.

Built-in Wi-Fi on Canon EOS 70D

Canon EOS 70D has a built-in Wi-Fi which allows to easily transfer photos and videos from the camera to other Wi-Fi-enabled devices, such as smartphones, tablets, printers, or computers. This eliminates the need for cables and allows for quick and convenient media sharing and social media integration. It gives you the ability to control your camera remotely using a smartphone or tablet. This is particularly useful for taking self-portraits, group shots, or capturing images in challenging conditions without having to touch the camera. Firmware updates can also be downloaded and installed wirelessly.
  Check out the cameras in our database that have built-in WiFi.

USB Inputs and HDMI Outputs

Both models have USB 2.0 (480 Mbit/sec) inputs for data transfer. connector for video signal output.

Battery

Canon EOS 70D comes with LP-E6 battery pack with battery life of 920 shots and Pentax K-x comes with 4 x AA battery pack with battery life of 1900 shots.

External Storage Slots

Canon EOS 70D has a single SD/SDHC/SDXC (UHS-I) card slot. Pentax K-x has a single SD/SDHC card slot.

Shutter

Pentax K-x has Electronically controlled Vertical Run Focal Plane shutter. Shutter speed can go up to 1/8000 sec on Canon EOS 70D, and up to 1/6000 sec on Pentax K-x. Canon EOS 70D can shoot continuously up to 7.0 fps. Pentax K-x can shoot continuously up to 4.7 fps.

Focusing

Canon EOS 70D has Dual Pixel CMOS AF system with 19 (19 cross-type) focusing points and Pentax K-x has 11 focusing points. Canon EOS 70D has detection range from -0.5 to +18 EV.

Flash

Cameras have built-in flash with maximum range of 12.00 m on Canon EOS 70D and 16.00 m on Pentax K-x. They also accept external flash which can be connected via Hot Shoe to Canon EOS 70D and via Hot shoe to Pentax K-x. The fastest flash synchronization speed is 1/250 sec on Canon EOS 70D and 1/180 sec on Pentax K-x.

Canon EOS 70D body has dimensions of 139 x 104 x 79 mm (5.47 x 4.11 x 3.09") and Pentax K-x body has dimensions of 123 x 92 x 68 mm (4.84 x 3.62 x 2.68"). Canon EOS 70D weighs 755 g (1.66 lb / 26.63 oz) and Pentax K-x weighs 580 g (1.28 lb / 20.46 oz).

Canon EOS 70D

Pentax K-x

139 mm

104 mm

123 mm

92 mm

104 mm

92 mm

79 mm

68 mm