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Canon 30D versus Canon 70D

The Canon EOS 30D and the Canon EOS 70D are two enthusiast cameras that were officially introduced, respectively, in February 2006 and July 2013. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The 30D has a resolution of 8.2 megapixel, whereas the 70D provides 20 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Canon 30D vs Canon 70D

The side-by-side display below illustrates the physical size and weight of the Canon 30D and the Canon 70D. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter. If you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left side – the 30D – represents the basis for the calculations across all the size and weight measures).

Compare Canon 30D vs Canon 70D
Compare 30D versus 70D top
Compare 30D and 70D rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon 70D is notably smaller (5 percent) than the Canon 30D. Moreover, the 70D is slightly lighter (4 percent) than the 30D. It is noteworthy in this context that the 70D is splash and dust-proof, while the 30D does not feature any corresponding weather-sealing.

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. In this particular case, both cameras feature the same lens mount, so that they can use the same lenses. You can find an overview of suitable optics in the Canon EF Lens Catalog.

Concerning battery life, the 30D gets 750 shots out of its BP-511A battery, while the 70D can take 920 images on a single charge of its LP-E6 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, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Canon 30D» 144 mm 106 mm 74 mm 785 g 750 n Feb 2006 1,399- i Canon 30D
Canon 70D« 139 mm 104 mm 79 mm 755 g 920 Y Jul 2013 1,199- i Canon 70D
Canon 80D« » 139 mm 105 mm 79 mm 730 g 960 Y Feb 2016 1,199 i i Canon 80D
Canon G3 X« » 123 mm 77 mm 105 mm 733 g 300 Y Jun 2015 999 i i Canon G3 X
Canon 7D II« » 149 mm 112 mm 78 mm 910 g 670 Y Sep 2014 1,799 i i Canon 7D II
Canon 60D« » 145 mm 106 mm 79 mm 755 g 1100 Y Aug 2010 1,399- i Canon 60D
Canon 7D« » 148 mm 111 mm 74 mm 860 g 800 Y Sep 2009 1,699- i Canon 7D
Canon 50D« » 146 mm 108 mm 74 mm 822 g 800 Y Aug 2008 1,299- i Canon 50D
Canon 40D« » 146 mm 108 mm 74 mm 822 g 750 n Aug 2007 1,299- i Canon 40D
Canon 400D« » 127 mm 84 mm 65 mm 556 g 370 n Aug 2006 799- i Canon 400D
Canon 350D« » 127 mm 94 mm 64 mm 540 g 400 n Feb 2005 899- i Canon 350D
Canon 20D« » 144 mm 106 mm 72 mm 770 g 700 n Aug 2004 1,499- i Canon 20D
Nikon D7100« » 136 mm 107 mm 76 mm 765 g 950 Y Feb 2013 1,199- i Nikon D7100
Nikon D80« » 132 mm 103 mm 77 mm 668 g 600 n Aug 2006 999- i Nikon D80
Nikon D200« » 147 mm 113 mm 74 mm 920 g 400 Y Nov 2005 1,699- i Nikon D200

Any camera purchase will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The 70D was launched at a somewhat lower price (by 14 percent) than the 30D, which makes it more attractive for photographers on a tight budget. 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: Canon 30D vs Canon 70D

The size of the sensor inside a digital camera is one of the key determinants 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 more expensive and lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature an APS-C sensor and have a format factor (sometimes also referred to as "crop factor") of 1.6. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Technology-wise, the 70D uses a more advanced image processing engine (DIGIC 5+) than the 30D (DIGIC 2), with benefits for noise reduction, color accuracy, and processing speed.

Canon 30D and Canon 70D sensor measures

While the two cameras under review share the same sensor size, the 70D offers a higher resolution of 20 megapixel, compared with 8.2 MP of the 30D. This megapixel advantage translates into a 56 percent gain in linear resolution. On the other hand, these sensor specs imply that the 70D has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.11μm versus 6.42μm for the 30D). However, it should be noted that the 70D is much more recent (by 7 years and 4 months) than the 30D, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size.

30D versus 70D MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 consideration, the 70D has a markedly higher DXO score than the 30D (overall score 9 points higher), which will translate into better image quality. The advantage is based on 1 bits higher color depth, 0.8 EV in additional dynamic range, and 0.3 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
Camera
Model
Canon 30D» APS-C 8.2 3504 2336-21.510.873659Canon 30D
Canon 70D« APS-C 20.0 5472 36481080/30p22.511.692668Canon 70D
Canon 80D« » APS-C 24.0 6000 40001080/60p23.613.2113579Canon 80D
Canon G3 X« » 1-inch 20.0 5472 36481080/60p21.412.352163Canon G3 X
Canon 7D II« » APS-C 20.0 5472 36481080/60p22.411.8108270Canon 7D II
Canon 60D« » APS-C 17.9 5184 34561080/30p22.211.581366Canon 60D
Canon 7D« » APS-C 17.9 5184 34561080/30p22.011.785466Canon 7D
Canon 50D« » APS-C 15.1 4752 3168-21.811.469663Canon 50D
Canon 40D« » APS-C 10.1 3888 2592-22.111.370364Canon 40D
Canon 400D« » APS-C 10.1 3888 2592-22.111.066462Canon 400D
Canon 350D« » APS-C 8.0 3456 2304-21.810.863760Canon 350D
Canon 20D« » APS-C 8.2 3504 2336-21.911.072162Canon 20D
Nikon D7100« » APS-C 24.0 6000 40001080/60p24.213.7125683Nikon D7100
Nikon D80« » APS-C 10.0 3872 2592-22.111.252461Nikon D80
Nikon D200« » APS-C 10.0 3872 2592-22.311.558364Nikon D200

Many modern cameras are not only capable of taking still images, but can also record movies. The 70D indeed provides for movie recording, while the 30D does not. The highest resolution format that the 70D can use is 1080/30p.

 

Feature comparison: Canon 30D vs Canon 70D

Apart from body and sensor, cameras can and do differ across a range of features. The 30D and the 70D 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 table below summarizes some of the other core capabilities of the Canon 30D and Canon 70D in connection with corresponding information for a sample of similar cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec)
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Camera
Model
Canon 30D»optical Y 2.5 230 fixed n 8000 5.0 Y n Canon 30D
Canon 70D«optical Y 3.0 1040 swivel Y 8000 7.0 Y n Canon 70D
Canon 80D« »optical Y 3.0 1040 swivel Y 8000 7.0 Y n Canon 80D
Canon G3 X« »- n 3.2 1620 tilting Y 2000 5.9 Y Y Canon G3 X
Canon 7D II« »optical Y 3.0 1040 fixed n 8000 10.0 Y n Canon 7D II
Canon 60D« »optical Y 3.0 1040 swivel n 8000 5.3 Y n Canon 60D
Canon 7D« »optical Y 3.0 920 fixed n 8000 8.0 Y n Canon 7D
Canon 50D« »optical Y 3.0 920 fixed n 8000 6.3 Y n Canon 50D
Canon 40D« »optical Y 3.0 230 fixed n 8000 6.5 Y n Canon 40D
Canon 400D« »optical n 2.5 230 fixed n 4000 3.0 Y n Canon 400D
Canon 350D« »optical n 1.8 115 fixed n 4000 3.0 Y n Canon 350D
Canon 20D« »optical Y 1.8 118 fixed n 8000 5.0 Y n Canon 20D
Nikon D7100« »optical Y 3.2 1229 fixed n 8000 6.0 Y n Nikon D7100
Nikon D80« »optical n 2.5 230 fixed n 4000 3.0 Y n Nikon D80
Nikon D200« »optical Y 2.5 230 fixed n 8000 5.0 Y n Nikon D200

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The 70D has a touchscreen, while the 30D has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The 30D writes its imaging data to Compact Flash cards, while the 70D uses SDXC cards.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
Canon 30D»Y-----2.0---Canon 30D
Canon 70D«YstereomonoY-mini2.0Y--Canon 70D
Canon 80D« »YstereomonoYYmini2.0YY-Canon 80D
Canon G3 X« »YstereomonoYYmini2.0YY-Canon G3 X
Canon 7D II« »YstereomonoYYmini3.0---Canon 7D II
Canon 60D« »YmonomonoY-mini2.0---Canon 60D
Canon 7D« »Ymono-Y-mini2.0---Canon 7D
Canon 50D« »Y----mini2.0---Canon 50D
Canon 40D« »Y-----2.0---Canon 40D
Canon 400D« »Y-----2.0---Canon 400D
Canon 350D« »Y-----2.0---Canon 350D
Canon 20D« »Y-----1.1---Canon 20D
Nikon D7100« »YstereomonoYYmini2.0---Nikon D7100
Nikon D80« »Y-----2.0---Nikon D80
Nikon D200« »Y-----2.0---Nikon D200

Both the 30D and the 70D have been discontinued, but can regularly be found used on eBay. The 30D was replaced by the Canon 40D, while the 70D was followed by the Canon 80D.

Review summary: Canon 30D vs Canon 70D

So how do things add up? Is the Canon 30D better than the Canon 70D or vice versa? Below is a summary of the relative strengths of each of the two contestants.


Reasons to prefer the Canon EOS 30D:

  • More heavily discounted: Has been available for much longer (launched in February 2006).


Advantages of the Canon EOS 70D:

  • More detail: Has more megapixels (20 vs 8.2MP), which boosts linear resolution by 56%.
  • Better image quality: Scores markedly higher (9 points) in the DXO overall evaluation.
  • More dynamic range: Captures a broader range of light and dark details (0.8 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (0.3 stops ISO advantage).
  • Better jpgs: Has a more modern image processing engine (DIGIC 5+ vs DIGIC 2).
  • Broader imaging potential: Can capture not only stills but also 1080/30p video.
  • Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
  • More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster burst: Shoots at higher frequency (7 vs 5 flaps/sec) to capture the decisive moment.
  • Longer lasting: Gets more shots (920 versus 750) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Easier file upload: Has wifi build in for automatic backup or image transfer to the web.
  • More affordable: Was released into a lower priced segment (14 percent cheaper at launch).
  • More modern: Reflects 7 years and 4 months of technical progress since the 30D launch.

If the count of individual advantages (bullet points above) is taken as a guide, the 70D is the clear winner of the contest (16 : 1 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.

30D 01:16 70D

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the 30D and the 70D in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate. This is why expert reviews are important. The adjacent table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). You can find the full text of the reviews by clicking on the site logo in the table header.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Canon 30D»HiRecHiRecrevrev- Feb 2006 1,399- i Canon 30D
Canon 70D«HiRec83/1004.5/54.5/55/5 Jul 2013 1,199- i Canon 70D
Canon 80D« »HiRec84/1004.5/54.5/54.5/5 Feb 2016 1,199 i i Canon 80D
Canon G3 X« »Rec-4.5/53.5/54/5 Jun 2015 999 i i Canon G3 X
Canon 7D II« »Rec84/1004/55/54.5/5 Sep 2014 1,799 i i Canon 7D II
Canon 60D« »Rec79/1004/55/54.5/5 Aug 2010 1,399- i Canon 60D
Canon 7D« »HiRec84/1004.5/55/54.5/5 Sep 2009 1,699- i Canon 7D
Canon 50D« »HiRecHiRec4.5/55/54.5/5 Aug 2008 1,299- i Canon 50D
Canon 40D« »HiRecHiRec4.5/5rev4.5/5 Aug 2007 1,299- i Canon 40D
Canon 400D« »HiRecHiRecrev4.5/54/5 Aug 2006 799- i Canon 400D
Canon 350D« »80/100HiRecrevrev- Feb 2005 899- i Canon 350D
Canon 20D« »-HiRec-rev- Aug 2004 1,499- i Canon 20D
Nikon D7100« »HiRec85/1004.5/55/54.5/5 Feb 2013 1,199- i Nikon D7100
Nikon D80« »RecHiRecrev4.5/54.5/5 Aug 2006 999- i Nikon D80
Nikon D200« »HiRecHiRecrev5/5- Nov 2005 1,699- i Nikon D200

The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

 

Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting. If you cannot find the camera you are interested in, please contact me, and I will try to add information on that model to the database.

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