Canon 77D vs G15

The Canon EOS 77D and the Canon PowerShot G15 are two digital cameras that were revealed to the public, respectively, in February 2017 and September 2012. The 77D is a DSLR, while the G15 is a fixed lens compact. The cameras are based on an APS-C (77D) and a 1/1.7-inch (G15) sensor. The 77D has a resolution of 24 megapixels, whereas the G15 provides 12 MP.

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

Headline Specifications

Canon 77D		Canon G15
Digital single lens reflex		Fixed lens compact camera
Canon EF mount lenses		28-140mm f/1.8-2.8
24 MP – APS-C sensor		12 MP – 1/1.7" sensor
1080/60p Video		1080/24p Video
ISO 100-25,600 (100 - 51,200)		ISO 80-12,800
Optical viewfinder		Optical viewfinder
3.0" LCD – 1040k dots		3.0" LCD – 922k dots
Swivel touchscreen		Fixed screen (not touch-sensitive)
6 shutter flaps per second		2.1 shutter flaps per second
600 shots per battery charge		350 shots per battery charge
131 x 100 x 76 mm, 540 g		107 x 76 x 40 mm, 352 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 77D and the Canon PowerShot G15? 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

An illustration of the physical size and weight of the Canon 77D and the Canon G15 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures are rounded to the nearest millimeter.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon G15 is considerably smaller (38 percent) than the Canon 77D. In this context, it is worth noting that neither the 77D nor the G15 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G15 has a lens built in, whereas the 77D is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the 77D and their specifications in the Canon EF Lens Catalog.

Concerning battery life, the 77D gets 600 shots out of its Canon LP-E17 battery, while the G15 can take 350 images on a single charge of its Canon NB-10L power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons 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 77D	131 mm	100 mm	76 mm	540 g	600	n	Feb 2017	EUR 899	ebay.com
2.		Canon G15	107 mm	76 mm	40 mm	352 g	350	n	Sep 2012	EUR 579	ebay.com
3.		Canon 80D	139 mm	105 mm	79 mm	730 g	960	Y	Feb 2016	EUR 1 285	ebay.com
4.		Canon 200D	122 mm	93 mm	70 mm	453 g	650	n	Jun 2017	EUR 599	ebay.com
5.		Canon 750D	132 mm	101 mm	78 mm	555 g	440	n	Feb 2015	EUR 699	ebay.com
6.		Canon 760D	132 mm	101 mm	78 mm	565 g	440	n	Feb 2015	EUR 749	ebay.com
7.		Canon 800D	131 mm	100 mm	76 mm	532 g	600	n	Feb 2017	EUR 849	ebay.com
8.		Canon 850D	131 mm	103 mm	76 mm	515 g	800	n	Feb 2020	EUR 899	ebay.com
9.		Canon 1300D	129 mm	101 mm	78 mm	485 g	500	n	Mar 2016	EUR 449	ebay.com
10.		Canon 2000D	129 mm	101 mm	78 mm	475 g	500	n	Feb 2018	EUR 499	amazon.com
11.		Canon G12	112 mm	76 mm	48 mm	401 g	370	n	Sep 2010	EUR 549	ebay.com
12.		Canon G16	109 mm	76 mm	40 mm	356 g	360	n	Aug 2013	EUR 599	ebay.com
13.		Canon M5	116 mm	89 mm	61 mm	427 g	295	n	Sep 2016	EUR 1 129	ebay.com
14.		Canon M6	112 mm	68 mm	45 mm	390 g	295	n	Feb 2017	EUR 799	ebay.com
15.		Canon SX50	123 mm	87 mm	106 mm	595 g	315	n	Sep 2012	EUR 529	ebay.com
16.		Fujifilm X10	117 mm	70 mm	57 mm	350 g	270	n	Sep 2011	EUR 529	ebay.com
17.		Panasonic LX7	111 mm	68 mm	46 mm	298 g	330	n	Jul 2012	EUR 529	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 obviously take relative prices into account. 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 G15 was launched at a lower price than the 77D, 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.

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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Canon 77D features an APS-C sensor and the Canon G15 a 1/1.7-inch sensor. The sensor area in the G15 is 87 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 4.6. The sensor in the 77D has a native 3:2 aspect ratio, while the one in the G15 offers a 4:3 aspect.

In terms of chip-set technology, the 77D uses a more advanced image processing engine (DIGIC 7) than the G15 (DIGIC 5), with benefits for noise reduction, color accuracy, and processing speed.

With 24MP, the 77D offers a higher resolution than the G15 (12MP), but the 77D nevertheless has larger individual pixels (pixel pitch of 3.72μm versus 1.89μm for the G15) due to its larger sensor. Moreover, the 77D is a much more recent model (by 4 years and 4 months) than the G15, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels.

The resolution advantage of the Canon 77D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 77D for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Canon G15 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 77D has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Canon EOS 77D has a native sensitivity range from ISO 100 to ISO 25600, which can be extended to ISO 100-51200. The corresponding ISO settings for the Canon PowerShot G15 are ISO 80 to ISO 12800 (no boost).

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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"). Of the two cameras under review, the 77D provides substantially higher image quality than the G15, with an overall score that is 32 points higher. This advantage is based on 3.7 bits higher color depth, 1.8 EV in additional dynamic range, and 2.6 stops in additional low light sensitivity. 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 77D	APS-C	24.0	6000	4000	1080/60p	23.6	13.3	971	78
2.		Canon G15	1/1.7	12.0	4000	3000	1080/24p	19.9	11.5	165	46
3.		Canon 80D	APS-C	24.0	6000	4000	1080/60p	23.6	13.2	1135	79
4.		Canon 200D	APS-C	24.0	6000	4000	1080/60p	23.6	13.4	1041	79
5.		Canon 750D	APS-C	24.0	6000	4000	1080/30p	22.7	12.0	919	71
6.		Canon 760D	APS-C	24.0	6000	4000	1080/30p	22.6	12.0	915	70
7.		Canon 800D	APS-C	24.0	6000	4000	1080/60p	23.7	13.1	1586	80
8.		Canon 850D	APS-C	24.0	6000	4000	4K/24p	24.0	13.5	1873	83
9.		Canon 1300D	APS-C	17.9	5184	3456	1080/30p	22.0	11.7	781	66
10.		Canon 2000D	APS-C	24.0	6000	4000	1080/30p	22.6	11.9	1009	71
11.		Canon G12	1/1.7	10.0	3648	2736	720/24p	20.4	11.2	161	47
12.		Canon G16	1/1.7	12.0	4000	3000	1080/60p	21.0	11.7	230	54
13.		Canon M5	APS-C	24.0	6000	4000	1080/60p	23.4	12.4	1262	77
14.		Canon M6	APS-C	24.0	6000	4000	1080/60p	23.4	12.6	1317	78
15.		Canon SX50	1/2.3	12.0	4000	3000	1080/24p	20.3	11.2	179	47
16.		Fujifilm X10	2/3	12.0	4000	3000	1080/30p	20.5	11.3	245	50
17.		Panasonic LX7	1/1.7	10.0	3648	2736	1080/60p	20.7	11.7	147	50
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the 77D provides a higher frame rate than the G15. It can shoot video footage at 1080/60p, while the G15 is limited to 1080/24p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The 77D and the G15 are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The following table reports on some other key feature differences and similarities of the Canon 77D, the Canon G15, and comparable cameras.

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 77D	optical	Y	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
2.		Canon G15	optical	n	3.0 / 922	fixed	n	1/4000s	2.1/s	Y	Y
3.		Canon 80D	optical	Y	3.0 / 1040	swivel	Y	1/8000s	7.0/s	Y	n
4.		Canon 200D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
5.		Canon 750D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
6.		Canon 760D	optical	Y	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
7.		Canon 800D	optical	n	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
8.		Canon 850D	optical	n	3.0 / 1040	swivel	Y	1/4000s	7.5/s	Y	n
9.		Canon 1300D	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
10.		Canon 2000D	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
11.		Canon G12	optical	n	2.8 / 461	swivel	n	1/4000s	1.1/s	Y	Y
12.		Canon G16	optical	n	3.0 / 922	fixed	n	1/4000s	2.2/s	Y	Y
13.		Canon M5	2360	n	3.2 / 1620	tilting	Y	1/4000s	9.0/s	Y	n
14.		Canon M6	optional	n	3.0 / 1040	tilting	Y	1/4000s	9.0/s	Y	n
15.		Canon SX50	202	n	3.0 / 461	swivel	n	1/2000s	2.2/s	Y	Y
16.		Fujifilm X10	optical	n	2.8 / 460	fixed	n	1/4000s	10.0/s	Y	Y
17.		Panasonic LX7	optional	n	3.0 / 920	fixed	n	1/4000s	11.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the 77D, but is missing on the G15 is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The Canon 77D 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 77D and the G15 write their files to SDXC cards. The 77D supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the G15 cannot take advantage of Ultra High Speed SD 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 EOS 77D and Canon PowerShot G15 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 77D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
2.		Canon G15	Y	stereo / mono	-	-	mini	2.0	-	-	-
3.		Canon 80D	Y	stereo / mono	Y	Y	mini	2.0	Y	Y	-
4.		Canon 200D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
5.		Canon 750D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
6.		Canon 760D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
7.		Canon 800D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
8.		Canon 850D	Y	stereo / mono	Y	-	mini	2.0	Y	-	Y
9.		Canon 1300D	Y	mono / mono	-	-	mini	2.0	Y	Y	-
10.		Canon 2000D	Y	mono / mono	-	-	mini	2.0	Y	Y	-
11.		Canon G12	Y	stereo / mono	-	-	mini	2.0	-	-	-
12.		Canon G16	Y	stereo / mono	-	-	mini	2.0	Y	-	-
13.		Canon M5	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
14.		Canon M6	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
15.		Canon SX50	Y	stereo / mono	-	-	mini	2.0	-	-	-
16.		Fujifilm X10	Y	stereo / mono	-	-	mini	2.0	-	-	-
17.		Panasonic LX7	Y	stereo / mono	-	-	mini	2.0	-	-	-

It is notable that the 77D has a microphone port, which is missing on the G15. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.

Both the 77D and the G15 have been discontinued, but can regularly be found used on ebay. The G15 was replaced by the Canon G16, while the 77D does not have a direct successor. Further information on the features and operation of the 77D and G15 can be found, respectively, in the Canon 77D Manual (free pdf) or the online Canon G15 Manual.

Review summary

So what is the bottom line? Is the Canon 77D better than the Canon G15 or vice versa? The listing below highlights the relative strengths of the two models.

Reasons to prefer the Canon EOS 77D:

• More detail: Offers more megapixels (24 vs 12MP) with a 44% higher linear resolution.
• Better image quality: Scores substantially higher (32 points) in the DXO overall assessment.
• Richer colors: Generates images with noticeably better colors (3.7 bits more color depth).
• More dynamic range: Captures a larger spectrum of light and dark details (1.8 EV of extra DR).
• Better low-light sensitivity: Requires less light for good images (2.6 stops ISO advantage).
• Better jpgs: Has a more modern image processing engine (DIGIC 7 vs DIGIC 5).
• Better video: Provides higher movie framerates (1080/60p versus 1080/24p).
• Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
• Better sound: Can connect to an external microphone for higher quality sound recording.
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• More detailed LCD: Has a higher resolution rear screen (1040k vs 922k dots).
• More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
• Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• Faster burst: Shoots at higher frequency (6 vs 2.1 flaps/sec) to capture the decisive moment.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• More flexible: Can take a variety of interchangeable lenses, including specialty optics.
• Longer lasting: Can take more shots (600 versus 350) on a single battery charge.
• Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
• Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
• Easier wireless transfer: Supports Bluetooth for image sharing without cables.
• Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
• More modern: Reflects 4 years and 4 months of technical progress since the G15 launch.

Arguments in favor of the Canon PowerShot G15:

• Ready to shoot: Comes with an integrated lens, while the 77D requires a separate lens.
• More compact: Is smaller (107x76mm vs 131x100mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight even though it has a lens built in (unlike the 77D).
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More heavily discounted: Has been around for much longer (launched in September 2012).

If the count of relative strengths (bullet points above) is taken as a measure, the 77D is the clear winner of the match-up (23 : 6 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro 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 77D and the Canon G15 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Travel-Zoom Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the 77D and the G15 in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is why expert reviews are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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 77D	4.5/5	..	4/5	82/100	4.5/5	4/5	Feb 2017	EUR 899	ebay.com
2.		Canon G15	4/5	+	..	76/100	4.5/5	4.5/5	Sep 2012	EUR 579	ebay.com
3.		Canon 80D	4/5	+ +	4.5/5	84/100	4.5/5	4.5/5	Feb 2016	EUR 1 285	ebay.com
4.		Canon 200D	4/5	+ +	4/5	78/100	4.5/5	4.5/5	Jun 2017	EUR 599	ebay.com
5.		Canon 750D	5/5	..	..	75/100	4.5/5	4.5/5	Feb 2015	EUR 699	ebay.com
6.		Canon 760D	5/5	+	..	77/100	4.5/5	4.5/5	Feb 2015	EUR 749	ebay.com
7.		Canon 800D	4.5/5	..	3.5/5	80/100	4.5/5	4/5	Feb 2017	EUR 849	ebay.com
8.		Canon 850D	4/5	+	3/5	80/100	4/5	3.5/5	Feb 2020	EUR 899	ebay.com
9.		Canon 1300D	4/5	o	4/5	73/100	4/5	4/5	Mar 2016	EUR 449	ebay.com
10.		Canon 2000D	3/5	o	3.5/5	..	3.5/5	3.5/5	Feb 2018	EUR 499	amazon.com
11.		Canon G12	4/5	+	..	73/100	4.5/5	4.5/5	Sep 2010	EUR 549	ebay.com
12.		Canon G16	4/5	+	..	..	4.5/5	4.5/5	Aug 2013	EUR 599	ebay.com
13.		Canon M5	4/5	+	4/5	82/100	4/5	4/5	Sep 2016	EUR 1 129	ebay.com
14.		Canon M6	..	..	..	80/100	4/5	4/5	Feb 2017	EUR 799	ebay.com
15.		Canon SX50	3/5	+ +	..	72/100	4.5/5	4.5/5	Sep 2012	EUR 529	ebay.com
16.		Fujifilm X10	..	..	..	76/100	4/5	4.5/5	Sep 2011	EUR 529	ebay.com
17.		Panasonic LX7	3/5	+ +	..	75/100	4/5	4.5/5	Jul 2012	EUR 529	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

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