Canon SX40 vs Pentax K-50

The Canon PowerShot SX40 HS and the Pentax K-50 are two digital cameras that were revealed to the public, respectively, in September 2011 and June 2013. The SX40 is a fixed lens compact, while the K-50 is a DSLR. The cameras are based on a 1/2.3-inch (SX40) and an APS-C (K-50) sensor. The Canon has a resolution of 12 megapixels, whereas the Pentax provides 16.1 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications

Canon SX40		Pentax K-50
Fixed lens compact camera		Digital single lens reflex
24-840mm f/2.7-5.8		Pentax K mount lenses
12 MP – 1/2.3" sensor		16.1 MP – APS-C sensor
1080/24p Video		1080/30p Video
ISO 100-3,200		ISO 100-51,200
Electronic viewfinder (202k dots)		Optical viewfinder
2.7" LCD – 230k dots		3.0" LCD – 921k dots
Swivel screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
10.3 shutter flaps per second		6 shutter flaps per second
Lens-based stabilization		In-body stabilization
not weather sealed		Weathersealed body
380 shots per battery charge		410 shots per battery charge
123 x 92 x 108 mm, 600 g		130 x 97 x 71 mm, 650 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot SX40 HS and the Pentax K-50? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison

The side-by-side display below illustrates the physical size and weight of the Canon SX40 and the Pentax K-50. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth dimensions are rounded to the nearest millimeter.

The K-50 can be obtained in three different colors (black, red, white), while the SX40 is only available in black.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-50 is notably larger (11 percent) than the Canon SX40. It is noteworthy in this context that the K-50 is splash and dust-proof, while the SX40 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the SX40 has a lens built in, whereas the K-50 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.

Concerning battery life, the SX40 gets 380 shots out of its Canon NB-10L battery, while the K-50 can take 410 images on a single charge of its Pentax D-LI109 power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

Body Specifications

		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price	Street Price
1.		Canon SX40	123 mm	92 mm	108 mm	600 g	380	n	Sep 2011	EUR 469	ebay.com
2.		Pentax K-50	130 mm	97 mm	71 mm	650 g	410	Y	Jun 2013	EUR 649	ebay.com
3.		Canon 1100D	130 mm	100 mm	78 mm	495 g	700	n	Feb 2011	EUR 399	ebay.com
4.		Canon G1 X	117 mm	81 mm	65 mm	534 g	250	n	Jan 2012	EUR 749	ebay.com
5.		Canon G12	112 mm	76 mm	48 mm	401 g	370	n	Sep 2010	EUR 549	ebay.com
6.		Canon G15	107 mm	76 mm	40 mm	352 g	350	n	Sep 2012	EUR 579	ebay.com
7.		Canon SX10	123 mm	88 mm	87 mm	600 g	..	n	Sep 2008	EUR 379	ebay.com
8.		Canon SX20	123 mm	88 mm	87 mm	600 g	..	n	Aug 2009	EUR 379	ebay.com
9.		Canon SX30	123 mm	92 mm	108 mm	601 g	370	n	Sep 2010	EUR 469	ebay.com
10.		Canon SX50	123 mm	87 mm	106 mm	595 g	315	n	Sep 2012	EUR 529	ebay.com
11.		Panasonic FZ100	124 mm	82 mm	92 mm	540 g	410	n	Jul 2010	EUR 529	ebay.com
12.		Panasonic FZ150	124 mm	82 mm	92 mm	528 g	410	n	Aug 2011	EUR 529	ebay.com
13.		Pentax K-5	131 mm	97 mm	73 mm	760 g	740	Y	Sep 2010	EUR 999	ebay.com
14.		Pentax K-5 II	131 mm	97 mm	73 mm	760 g	740	Y	Sep 2012	EUR 999	ebay.com
15.		Pentax K-30	130 mm	97 mm	71 mm	650 g	410	Y	May 2012	EUR 899	ebay.com
16.		Pentax K-70	126 mm	93 mm	74 mm	688 g	410	Y	Jun 2016	EUR 699	ebay.com
17.		Pentax K-500	130 mm	97 mm	71 mm	646 g	710	n	Jun 2013	EUR 599	ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
Convert to Imperial

Any camera decision will naturally be influenced heavily by the price. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The SX40 was launched at a lower price than the K-50, despite having a lens built in. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The size of the imaging sensor is a crucial determinant of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon SX40 features a 1/2.3-inch sensor and the Pentax K-50 an APS-C sensor. The sensor area in the K-50 is 1211 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 1.5. The sensor in the SX40 has a native 4:3 aspect ratio, while the one in the K-50 offers a 3:2 aspect.

With 16.1MP, the K-50 offers a higher resolution than the SX40 (12MP), but the K-50 nevertheless has larger individual pixels (pixel pitch of 4.77μm versus 1.53μm for the SX40) due to its larger sensor. Moreover, the K-50 is a somewhat more recent model (by 1 year and 8 months) than the SX40, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the SX40 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Pentax K-50 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-50 for good quality output (200 dots per inch) amounts to 24.6 x 16.3 inches or 62.6 x 41.5 cm, for very good quality (250 dpi) 19.7 x 13.1 inches or 50.1 x 33.2 cm, and for excellent quality (300 dpi) 16.4 x 10.9 inches or 41.7 x 27.6 cm. The corresponding values for the Canon SX40 are 20 x 15 inches or 50.8 x 38.1 cm for good quality, 16 x 12 inches or 40.6 x 30.5 cm for very good quality, and 13.3 x 10 inches or 33.9 x 25.4 cm for excellent quality prints.

The Canon PowerShot SX40 HS has a native sensitivity range from ISO 100 to ISO 3200. The corresponding ISO settings for the Pentax K-50 are ISO 100 to ISO 51200 (no boost).

In terms of underlying technology, the SX40 is build around a BSI-CMOS sensor, while the K-50 uses a CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Canon SX40	1/2.3	12.0	4000	3000	1080/24p	19.6	10.9	409	41
2.		Pentax K-50	APS-C	16.1	4928	3264	1080/30p	23.7	13.0	1120	79
3.		Canon 1100D	APS-C	12.2	4272	2848	720/30p	21.9	11.0	755	62
4.		Canon G1 X	1.5-inch	14.2	4352	3264	1080/24p	21.7	10.8	644	60
5.		Canon G12	1/1.7	10.0	3648	2736	720/24p	20.4	11.2	161	47
6.		Canon G15	1/1.7	12.0	4000	3000	1080/24p	19.9	11.5	165	46
7.		Canon SX10	1/2.3	10.0	3648	2736	480/30p	19.0	10.3	144	35
8.		Canon SX20	1/2.3	12.0	4000	3000	720/30p	19.2	10.5	225	37
9.		Canon SX30	1/2.3	14.0	4320	3240	720/30p	19.4	10.7	320	39
10.		Canon SX50	1/2.3	12.0	4000	3000	1080/24p	20.3	11.2	179	47
11.		Panasonic FZ100	1/2.3	14.0	4320	3240	1080/60i	19.4	10.7	306	39
12.		Panasonic FZ150	1/2.3	12.0	4000	3000	1080/60p	19.4	10.9	132	40
13.		Pentax K-5	APS-C	16.1	4928	3264	1080/25p	23.7	14.1	1162	82
14.		Pentax K-5 II	APS-C	16.1	4928	3264	1080/25p	23.8	14.1	1235	82
15.		Pentax K-30	APS-C	16.1	4928	3264	1080/30p	23.7	13.0	1129	79
16.		Pentax K-70	APS-C	24.0	6000	4000	1080/60i	23.8	13.1	1639	80
17.		Pentax K-500	APS-C	16.1	4928	3264	1080/30p	23.7	13.1	1087	79
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the K-50 provides a faster frame rate than the SX40. It can shoot movie footage at 1080/30p, while the Canon is limited to 1080/24p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the SX40 has an electronic viewfinder (202k dots), while the K-50 has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The adjacent table lists some of the other core features of the Canon SX40 and Pentax K-50 along with similar information for a selection of comparators.

Core Features

		Camera Model	Viewfinder (Type or 000 dots)	Control Panel (yes/no)	LCD Specifications (inch/000 dots)	LCD Attach- ment	Touch Screen (yes/no)	Max Shutter Speed *	Max Shutter Flaps *	Built-in Flash (yes/no)	Built-in Image Stab
1.		Canon SX40	202	n	2.7 / 230	swivel	n	1/3200s	10.3/s	Y	Y
2.		Pentax K-50	optical	n	3.0 / 921	fixed	n	1/6000s	6.0/s	Y	Y
3.		Canon 1100D	optical	n	2.7 / 230	fixed	n	1/4000s	3.0/s	Y	n
4.		Canon G1 X	optical	n	3.0 / 922	swivel	n	1/4000s	1.9/s	Y	Y
5.		Canon G12	optical	n	2.8 / 461	swivel	n	1/4000s	1.1/s	Y	Y
6.		Canon G15	optical	n	3.0 / 922	fixed	n	1/4000s	2.1/s	Y	Y
7.		Canon SX10	202	n	2.5 / 230	swivel	n	1/3200s	0.7/s	Y	Y
8.		Canon SX20	202	n	2.5 / 230	swivel	n	1/3200s	0.7/s	Y	Y
9.		Canon SX30	202	n	2.7 / 230	swivel	n	1/3200s	0.6/s	Y	Y
10.		Canon SX50	202	n	3.0 / 461	swivel	n	1/2000s	2.2/s	Y	Y
11.		Panasonic FZ100	202	n	3.0 / 460	swivel	n	1/2000s	11.0/s	Y	Y
12.		Panasonic FZ150	202	n	3.0 / 460	swivel	n	1/2000s	12.0/s	Y	Y
13.		Pentax K-5	optical	Y	3.0 / 921	fixed	n	1/8000s	7.0/s	Y	Y
14.		Pentax K-5 II	optical	Y	3.0 / 921	fixed	n	1/8000s	7.0/s	Y	Y
15.		Pentax K-30	optical	n	3.0 / 921	fixed	n	1/6000s	6.0/s	Y	Y
16.		Pentax K-70	optical	n	3.0 / 921	swivel	n	1/6000s	6.0/s	Y	Y
17.		Pentax K-500	optical	n	3.0 / 921	fixed	n	1/6000s	6.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

The Pentax K-50 has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

Concerning the storage of imaging data, both the SX40 and the K-50 write their files to SDXC cards.

Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Canon PowerShot SX40 HS and Pentax K-50 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections

		Camera Model	Hotshoe Port	Internal Mic / Speaker	Microphone Port	Headphone Port	HDMI Port	USB Port	WiFi Support	NFC Support	Bluetooth Support
1.		Canon SX40	Y	stereo / mono	-	-	YES	2.0	-	-	-
2.		Pentax K-50	Y	mono / mono	-	-	micro	2.0	-	-	-
3.		Canon 1100D	Y	stereo / mono	-	-	mini	2.0	-	-	-
4.		Canon G1 X	Y	stereo / mono	-	-	mini	2.0	-	-	-
5.		Canon G12	Y	stereo / mono	-	-	mini	2.0	-	-	-
6.		Canon G15	Y	stereo / mono	-	-	mini	2.0	-	-	-
7.		Canon SX10	Y	stereo / mono	-	-	-	2.0	-	-	-
8.		Canon SX20	Y	stereo / mono	-	-	YES	2.0	-	-	-
9.		Canon SX30	Y	stereo / mono	-	-	YES	2.0	-	-	-
10.		Canon SX50	Y	stereo / mono	-	-	mini	2.0	-	-	-
11.		Panasonic FZ100	Y	stereo / mono	-	-	mini	2.0	-	-	-
12.		Panasonic FZ150	Y	stereo / -	-	-	mini	2.0	-	-	-
13.		Pentax K-5	Y	stereo / mono	Y	-	mini	2.0	-	-	-
14.		Pentax K-5 II	Y	stereo / mono	Y	-	mini	2.0	-	-	-
15.		Pentax K-30	Y	mono / mono	-	-	-	2.0	-	-	-
16.		Pentax K-70	Y	stereo / mono	Y	-	mini	2.0	Y	-	-
17.		Pentax K-500	Y	mono / mono	-	-	-	2.0	-	-	-

Both the SX40 and the K-50 have been discontinued, but can regularly be found used on ebay. The SX40 was replaced by the Canon SX50, while the K-50 was followed by the Pentax K-70. Further information on the features and operation of the SX40 and K-50 can be found, respectively, in the Canon SX40 Manual (free pdf) or the online Pentax K-50 Manual.

Review summary

So what is the bottom line? Is the Canon SX40 better than the Pentax K-50 or vice versa? A synthesis of the relative strong points of each of the models is listed below.

Arguments in favor of the Canon PowerShot SX40 HS:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• More framing info: Has an electronic viewfinder that displays shooting data.
• More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
• Faster burst: Shoots at higher frequency (10.3 vs 6 flaps/sec) to capture the decisive moment.
• Ready to shoot: Comes with a built-in lens, while the K-50 requires a separate lens.
• Less heavy: Is lighter even though it comes with a built-in lens (unlike the K-50).
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More heavily discounted: Has been on the market for longer (launched in September 2011).

Advantages of the Pentax K-50:

• More detail: Has more megapixels (16.1 vs 12MP), which boosts linear resolution by 18%.
• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Better image quality: Is equipped with a larger and more technologically advanced sensor.
• Richer colors: The sensor size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
• Better video: Provides higher movie framerates (1080/30p versus 1080/24p).
• Brighter framing: Features an optical viewfinder for clear, lag-free composition.
• Larger screen: Has a bigger rear LCD (3.0" vs 2.7") for image review and settings control.
• More detailed LCD: Has a higher resolution rear screen (921k vs 230k dots).
• Faster shutter: Has higher mechanical shutter speed (1/6000s vs 1/3200s) to freeze action.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• More flexible: Makes it possible to change lenses and thus to use specialty optics.
• Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
• More modern: Was introduced somewhat (1 year and 8 months) more recently.

If the count of relative strengths (bullet points above) is taken as a measure, the K-50 is the clear winner of the contest (15 : 8 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

How about other alternatives? Do the specifications of the Canon SX40 and the Pentax K-50 place the cameras among the top in their class? Find out in the latest Best Superzoom Camera and Best DSLR Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the SX40 or the K-50 perform in practice. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews

This is where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

Expert Camera Reviews

		Camera   Model	AP   score	CL   score	DCW   score	DPR   score	EPZ   score	PB   score	Camera Launch	Launch Price	Street Price
1.		Canon SX40	..	+	..	..	4.5/5	4/5	Sep 2011	EUR 469	ebay.com
2.		Pentax K-50	5/5	..	..	..	5/5	4.5/5	Jun 2013	EUR 649	ebay.com
3.		Canon 1100D	..	80/100	..	69/100	4/5	4.5/5	Feb 2011	EUR 399	ebay.com
4.		Canon G1 X	5/5	+	..	76/100	4/5	4.5/5	Jan 2012	EUR 749	ebay.com
5.		Canon G12	4/5	+	..	73/100	4.5/5	4.5/5	Sep 2010	EUR 549	ebay.com
6.		Canon G15	4/5	+	..	76/100	4.5/5	4.5/5	Sep 2012	EUR 579	ebay.com
7.		Canon SX10	..	+ +	..	..	..	4/5	Sep 2008	EUR 379	ebay.com
8.		Canon SX20	..	+ +	..	73/100	..	4/5	Aug 2009	EUR 379	ebay.com
9.		Canon SX30	3/5	+ +	..	..	3.5/5	4/5	Sep 2010	EUR 469	ebay.com
10.		Canon SX50	3/5	+ +	..	72/100	4.5/5	4.5/5	Sep 2012	EUR 529	ebay.com
11.		Panasonic FZ100	..	+	..	..	4.5/5	4.5/5	Jul 2010	EUR 529	ebay.com
12.		Panasonic FZ150	3/5	+ +	..	76/100	4/5	4.5/5	Aug 2011	EUR 529	ebay.com
13.		Pentax K-5	4/5	..	..	83/100	5/5	4.5/5	Sep 2010	EUR 999	ebay.com
14.		Pentax K-5 II	5/5	..	..	80/100	5/5	4.5/5	Sep 2012	EUR 999	ebay.com
15.		Pentax K-30	4/5	..	..	78/100	4.5/5	4.5/5	May 2012	EUR 899	ebay.com
16.		Pentax K-70	4.5/5	..	4/5	79/100	4.5/5	4.5/5	Jun 2016	EUR 699	ebay.com
17.		Pentax K-500	..	..	..	..	4.5/5	4.5/5	Jun 2013	EUR 599	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

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Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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