Canon 77D vs Olympus E-30

The Canon EOS 77D and the Olympus E-30 are two digital cameras that were officially introduced, respectively, in February 2017 and November 2008. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (77D) and a Four Thirds (E-30) sensor. The Canon has a resolution of 24 megapixels, whereas the Olympus provides 12.2 MP.

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

Headline Specifications

Canon 77D		Olympus E-30
Digital single lens reflex		Digital single lens reflex
Canon EF mount lenses		Four Thirds lenses
24 MP – APS-C sensor		12.2 MP – Four Thirds sensor
1080/60p Video		no Video
ISO 100-25,600 (100 - 51,200)		ISO 100-3,200
Optical viewfinder		Optical viewfinder
3.0" LCD – 1040k dots		2.7" LCD – 230k dots
Swivel touchscreen		Swivel screen (not touch-sensitive)
6 shutter flaps per second		5 shutter flaps per second
Lens stabilization only		In-body stabilization
600 shots per battery charge		750 shots per battery charge
131 x 100 x 76 mm, 540 g		142 x 108 x 75 mm, 701 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 Olympus E-30? 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 Olympus E-30 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 size dimensions 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 Olympus E-30 is notably larger (17 percent) than the Canon 77D. Moreover, the E-30 is markedly heavier (30 percent) than the 77D. In this context, it is worth noting that neither the 77D nor the E-30 are weather-sealed.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (77D) and the Four Thirds Lens Catalog (E-30).

Concerning battery life, the 77D gets 600 shots out of its Canon LP-E17 battery, while the E-30 can take 750 images on a single charge of its Olympus BLM-1 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

Body Specifications

#		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price (USD)	Street Price
1.		Canon 77D	131 mm	100 mm	76 mm	540 g	600	n	Feb 2017	899	ebay.com
2.		Olympus E-30	142 mm	108 mm	75 mm	701 g	750	n	Nov 2008	1,299	ebay.com
3.		Canon 850D	131 mm	103 mm	76 mm	515 g	800	n	Feb 2020	749	ebay.com
4.		Canon 2000D	129 mm	101 mm	78 mm	475 g	500	n	Feb 2018	449	amazon.com
5.		Canon 200D	122 mm	93 mm	70 mm	453 g	650	n	Jun 2017	549	ebay.com
6.		Canon 800D	131 mm	100 mm	76 mm	532 g	600	n	Feb 2017	749	ebay.com
7.		Canon M6	112 mm	68 mm	45 mm	390 g	295	n	Feb 2017	779	ebay.com
8.		Canon 80D	139 mm	105 mm	79 mm	730 g	960	Y	Feb 2016	1,199	ebay.com
9.		Canon 1300D	129 mm	101 mm	78 mm	485 g	500	n	Mar 2016	449	ebay.com
10.		Canon M5	116 mm	89 mm	61 mm	427 g	295	n	Sep 2016	979	ebay.com
11.		Canon 750D	132 mm	101 mm	78 mm	555 g	440	n	Feb 2015	749	ebay.com
12.		Canon 760D	132 mm	101 mm	78 mm	565 g	440	n	Feb 2015	649	ebay.com
13.		Olympus E-600	130 mm	94 mm	60 mm	535 g	500	n	Aug 2009	449	ebay.com
14.		Olympus E-620	130 mm	94 mm	60 mm	521 g	500	n	Feb 2009	699	ebay.com
15.		Olympus E-520	136 mm	92 mm	68 mm	535 g	750	n	May 2008	699	ebay.com
16.		Olympus E-410	130 mm	91 mm	53 mm	435 g	500	n	Mar 2007	699	ebay.com
17.		Olympus E-510	136 mm	92 mm	68 mm	538 g	750	n	Mar 2007	799	ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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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 77D was launched at a markedly lower price (by 31 percent) than the E-30, which puts it into a different market segment. 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon 77D features an APS-C sensor and the Olympus E-30 a Four Thirds sensor. The sensor area in the E-30 is 32 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 2.0. The sensor in the 77D has a native 3:2 aspect ratio, while the one in the E-30 offers a 4:3 aspect.

With 24MP, the 77D offers a higher resolution than the E-30 (12.2MP), but the 77D has smaller individual pixels (pixel pitch of 3.72μm versus 4.29μm for the E-30). However, the 77D is a much more recent model (by 8 years and 3 months) than the E-30, and its sensor will have benefitted from technological advances during this time that 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 Olympus E-30 are 20.2 x 15.1 inches or 51.2 x 38.4 cm for good quality, 16.1 x 12.1 inches or 41 x 30.7 cm for very good quality, and 13.4 x 10.1 inches or 34.1 x 25.6 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 Olympus E-30 are ISO 100 to ISO 3200 (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 determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under review, the 77D provides substantially higher image quality than the E-30, with an overall score that is 23 points higher. This advantage is based on 2.3 bits higher color depth, 2.9 EV in additional dynamic range, and 0.9 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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.		Olympus E-30	Four Thirds	12.2	4032	3024	none	21.3	10.4	530	55
3.		Canon 850D	APS-C	24.0	6000	4000	4K/24p	24.0	13.5	1873	83
4.		Canon 2000D	APS-C	24.0	6000	4000	1080/30p	22.6	11.9	1009	71
5.		Canon 200D	APS-C	24.0	6000	4000	1080/60p	23.6	13.4	1041	79
6.		Canon 800D	APS-C	24.0	6000	4000	1080/60p	23.7	13.1	1586	80
7.		Canon M6	APS-C	24.0	6000	4000	1080/60p	23.4	12.6	1317	78
8.		Canon 80D	APS-C	24.0	6000	4000	1080/60p	23.6	13.2	1135	79
9.		Canon 1300D	APS-C	17.9	5184	3456	1080/30p	22.0	11.7	781	66
10.		Canon M5	APS-C	24.0	6000	4000	1080/60p	23.4	12.4	1262	77
11.		Canon 750D	APS-C	24.0	6000	4000	1080/30p	22.7	12.0	919	71
12.		Canon 760D	APS-C	24.0	6000	4000	1080/30p	22.6	12.0	915	70
13.		Olympus E-600	Four Thirds	12.2	4032	3024	none	21.5	10.3	541	55
14.		Olympus E-620	Four Thirds	12.2	4032	3024	none	21.3	10.3	536	55
15.		Olympus E-520	Four Thirds	10.0	3648	2736	none	21.4	10.4	548	55
16.		Olympus E-410	Four Thirds	10.0	3648	2736	none	21.1	10.0	494	51
17.		Olympus E-510	Four Thirds	10.0	3648	2736	none	21.2	10.0	442	52
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. The 77D indeed provides movie recording capabilities, while the E-30 does not. The highest resolution format that the 77D can use is 1080/60p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The 77D and the E-30 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 viewfinders of both cameras offer the same magnification (0.51x), but the one in the E-30 has a wider field of view (98%) than the finder in the 77D (95%), so that a larger proportion of the captured image is visible. The adjacent table lists some of the other core features of the Canon 77D and Olympus E-30 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 77D	optical	Y	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
2.		Olympus E-30	optical	Y	2.7 / 230	swivel	n	1/8000s	5.0/s	Y	Y
3.		Canon 850D	optical	n	3.0 / 1040	swivel	Y	1/4000s	7.5/s	Y	n
4.		Canon 2000D	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
5.		Canon 200D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
6.		Canon 800D	optical	n	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
7.		Canon M6	optional	n	3.0 / 1040	tilting	Y	1/4000s	9.0/s	Y	n
8.		Canon 80D	optical	Y	3.0 / 1040	swivel	Y	1/8000s	7.0/s	Y	n
9.		Canon 1300D	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
10.		Canon M5	2360	n	3.2 / 1620	tilting	Y	1/4000s	9.0/s	Y	n
11.		Canon 750D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
12.		Canon 760D	optical	Y	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
13.		Olympus E-600	optical	n	2.7 / 230	swivel	n	1/4000s	4.0/s	Y	Y
14.		Olympus E-620	optical	n	2.7 / 230	swivel	n	1/4000s	4.0/s	Y	Y
15.		Olympus E-520	optical	n	2.7 / 215	fixed	n	1/4000s	3.5/s	Y	Y
16.		Olympus E-410	optical	n	2.5 / 215	fixed	n	1/4000s	3.0/s	Y	n
17.		Olympus E-510	optical	n	2.5 / 215	fixed	n	1/4000s	3.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The 77D has a touchscreen, while the E-30 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

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.

The 77D writes its imaging data to SDXC cards, while the E-30 uses Compact Flash or xD Picture cards. The E-30 features dual card slots, which can be very useful in case a memory card fails. In contrast, the 77D only has one slot.

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 Olympus E-30 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.		Olympus E-30	Y	- / -	-	-	-	2.0	-	-	-
3.		Canon 850D	Y	stereo / mono	Y	-	mini	2.0	Y	-	Y
4.		Canon 2000D	Y	mono / mono	-	-	mini	2.0	Y	Y	-
5.		Canon 200D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
6.		Canon 800D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
7.		Canon M6	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
8.		Canon 80D	Y	stereo / mono	Y	Y	mini	2.0	Y	Y	-
9.		Canon 1300D	Y	mono / mono	-	-	mini	2.0	Y	Y	-
10.		Canon M5	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
11.		Canon 750D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
12.		Canon 760D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
13.		Olympus E-600	Y	- / -	-	-	-	2.0	-	-	-
14.		Olympus E-620	Y	- / -	-	-	-	2.0	-	-	-
15.		Olympus E-520	Y	- / -	-	-	-	2.0	-	-	-
16.		Olympus E-410	Y	- / -	-	-	-	2.0	-	-	-
17.		Olympus E-510	Y	- / -	-	-	-	2.0	-	-	-

It is notable that the 77D offers wifi support, while the E-30 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Both the 77D and the E-30 have been discontinued, but can regularly be found used on ebay. Neither of the two has a direct successor, so they represent the end of the respective camera lines from Canon and Olympus. Further information on the features and operation of the 77D and E-30 can be found, respectively, in the Canon 77D Manual (free pdf) or the online Olympus E-30 Manual.

Review summary

So what is the bottom line? Which of the two cameras – the Canon 77D or the Olympus E-30 – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.

Advantages of the Canon EOS 77D:

• More detail: Offers more megapixels (24 vs 12.2MP) with a 43% higher linear resolution.
• Better image quality: Scores substantially higher (23 points) in the DXO overall assessment.
• Richer colors: Generates images with noticeably better colors (2.3 bits more color depth).
• More dynamic range: Captures a larger spectrum of light and dark details (2.9 EV of extra DR).
• Better low-light sensitivity: Requires less light for good images (0.9 stops ISO advantage).
• Broader imaging potential: Can record not only still images but also 1080/60p movies.
• Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
• 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 (1040k vs 230k dots).
• Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
• Faster burst: Shoots at higher frequency (6 vs 5 flaps/sec) to capture the decisive moment.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• More compact: Is smaller (131x100mm vs 142x108mm) and thus needs less room in the bag.
• Less heavy: Is lighter (by 161g or 23 percent) and hence easier to carry around.
• 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.
• More affordable: Was introduced into a lower priced category (31 percent cheaper at launch).
• More modern: Reflects 8 years and 3 months of technical progress since the E-30 launch.

Arguments in favor of the Olympus E-30:

• More complete view: Has a viewfinder with a larger field of view (98% vs 95%).
• Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
• Longer lasting: Gets more shots (750 versus 600) out of a single battery charge.
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
• More heavily discounted: Has been around for much longer (launched in November 2008).

If the count of individual advantages (bullet points above) is taken as a guide, the 77D is the clear winner of the match-up (19 : 7 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 Olympus E-30 place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing 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 remains incomplete and does no justice, for example, to the way the 77D or the E-30 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 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 (USD)	Street Price
1.		Canon 77D	4.5/5	..	4/5	82/100	4.5/5	4/5	Feb 2017	899	ebay.com
2.		Olympus E-30	..	..	..	71/100	4.5/5	4/5	Nov 2008	1,299	ebay.com
3.		Canon 850D	4/5	+	3/5	80/100	4/5	3.5/5	Feb 2020	749	ebay.com
4.		Canon 2000D	3/5	o	3.5/5	..	3.5/5	3.5/5	Feb 2018	449	amazon.com
5.		Canon 200D	4/5	+ +	4/5	78/100	4.5/5	4.5/5	Jun 2017	549	ebay.com
6.		Canon 800D	4.5/5	..	3.5/5	80/100	4.5/5	4/5	Feb 2017	749	ebay.com
7.		Canon M6	..	..	..	80/100	4/5	4/5	Feb 2017	779	ebay.com
8.		Canon 80D	4/5	+ +	4.5/5	84/100	4.5/5	4.5/5	Feb 2016	1,199	ebay.com
9.		Canon 1300D	4/5	o	4/5	73/100	4/5	4/5	Mar 2016	449	ebay.com
10.		Canon M5	4/5	+	4/5	82/100	4/5	4/5	Sep 2016	979	ebay.com
11.		Canon 750D	5/5	..	..	75/100	4.5/5	4.5/5	Feb 2015	749	ebay.com
12.		Canon 760D	5/5	+	..	77/100	4.5/5	4.5/5	Feb 2015	649	ebay.com
13.		Olympus E-600	..	..	..	..	..	4.5/5	Aug 2009	449	ebay.com
14.		Olympus E-620	3/5	88/100	..	72/100	4.5/5	5/5	Feb 2009	699	ebay.com
15.		Olympus E-520	..	87/100	..	+ +	4.5/5	4.5/5	May 2008	699	ebay.com
16.		Olympus E-410	..	86/100	..	+ +	4/5	4.5/5	Mar 2007	699	ebay.com
17.		Olympus E-510	..	89/100	..	+ +	3.5/5	4.5/5	Mar 2007	799	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, 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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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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 a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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