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Canon 30D vs G7X

The Canon EOS 30D and the Canon PowerShot G7 X are two digital cameras that were revealed to the public, respectively, in February 2006 and September 2014. The 30D is a DSLR, while the G7X is a fixed lens compact. The cameras are based on an APS-C (30D) and an one-inch (G7X) sensor. The 30D has a resolution of 8.2 megapixels, whereas the G7X provides 20 MP.

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

Headline Specifications
Canon 30D versus Canon G7 X
Canon 30D Canon G7 X
Digital single lens reflex Fixed lens compact camera
Canon EF mount lenses 24-100mm f/1.8-2.8
8.2 MP, APS-C Sensor 20 MP, 1" Sensor
no Video 1080/60p Video
ISO 100-1,600 (100 - 3,200) ISO 125-12,800
Optical viewfinder No viewfinder, LCD framing
2.5 LCD, 230k dots 3.0 LCD, 1040k dots
Fixed screen (not touch-sensitive) Tilting touchscreen
5 shutter flaps per second 6.5 shutter flaps per second
750 shots per battery charge210 shots per battery charge
144 x 106 x 74 mm, 785 g 103 x 60 x 40 mm, 304 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 30D and the Canon PowerShot G7 X? 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 30D and the Canon G7 X is provided in the side-by-side display below. 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 measures are rounded to the nearest millimeter.

Size Canon 30D vs Canon G7 X
Compare 30D versus G7X top
Comparison 30D or G7X rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon G7 X is considerably smaller (60 percent) than the Canon 30D. In this context, it is worth noting that neither the 30D nor the G7X are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G7X has a lens built in, whereas the 30D 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 30D and their specifications in the Canon EF Lens Catalog.

Concerning battery life, the 30D gets 750 shots out of its BP-511A battery, while the G7X can take 210 images on a single charge of its NB-13L power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.

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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 30D 144 mm 106 mm 74 mm 785 g 750 n Feb 2006 1,399i
2.
 
Canon G7 X 103 mm 60 mm 40 mm 304 g 210 n Sep 2014 699i
3.
 
Canon G7 X Mark II 106 mm 61 mm 42 mm 319 g 265 n Feb 2016 699i
4.
 
Canon G5 X 112 mm 76 mm 44 mm 353 g 210 n Oct 2015 799i
5.
 
Canon G9 X 98 mm 58 mm 31 mm 209 g 220 n Oct 2015 529i
6.
 
Canon M3 111 mm 68 mm 44 mm 366 g 250 n Feb 2015 679i
7.
 
Canon 70D 139 mm 104 mm 79 mm 755 g 920 Y Jul 2013 1,199i
8.
 
Canon 60D 145 mm 106 mm 79 mm 755 g 1100 Y Aug 2010 1,399i
9.
 
Canon 7D 148 mm 111 mm 74 mm 860 g 800 Y Sep 2009 1,699i
10.
 
Canon 50D 146 mm 108 mm 74 mm 822 g 800 Y Aug 2008 1,299i
11.
 
Canon 40D 146 mm 108 mm 74 mm 822 g 750 n Aug 2007 1,299i
12.
 
Canon XTi 127 mm 84 mm 65 mm 556 g 370 n Aug 2006 799i
13.
 
Canon XT 127 mm 94 mm 64 mm 540 g 400 n Feb 2005 899i
14.
 
Canon 20D 144 mm 106 mm 72 mm 770 g 700 n Aug 2004 1,499i
15.
 
Canon 10D 150 mm 107 mm 75 mm 850 g 500 n Feb 2003 1,999i
16.
 
Canon Rebel 142 mm 99 mm 72 mm 649 g 400 n Aug 2003 899i
17.
 
Sony RX100 II 102 mm 58 mm 38 mm 281 g 350 n Jun 2013 749i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The G7X was launched at a lower price than the 30D, 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.

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Sensor comparison

The size of the imaging sensor is a crucial determinant of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units 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.

Of the two cameras under consideration, the Canon 30D features an APS-C sensor and the Canon G7 X an one-inch sensor. The sensor area in the G7X is 66 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 2.7. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Technology-wise, the G7X uses a more advanced image processing engine (DIGIC 6) than the 30D (DIGIC 2), with benefits for noise reduction, color accuracy, and processing speed.

Canon 30D and Canon G7 X sensor measures

Despite having a smaller sensor, the G7X offers a higher resolution of 20 megapixels, compared with 8.2 MP of the 30D. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 2.41μm versus 6.42μm for the 30D). However, it should be noted that the G7X is much more recent (by 8 years and 6 months) than the 30D, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.

The resolution advantage of the Canon G7 X implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G7X for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inches or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inches or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inches or 46.3 x 30.9 cm. The corresponding values for the Canon 30D are 17.5 x 11.7 inches or 44.5 x 29.7 cm for good quality, 14 x 9.3 inches or 35.6 x 23.7 cm for very good quality, and 11.7 x 7.8 inches or 29.7 x 19.8 cm for excellent quality prints.

The Canon EOS 30D has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 100-3200. The corresponding ISO settings for the Canon PowerShot G7 X are ISO 125 to ISO 12800 (no boost).

30D versus G7X 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 G7X offers substantially better image quality than the 30D (overall score 12 points higher). The advantage is based on 1.5 bits higher color depth, 1.9 EV in additional dynamic range, and 0.4 stops of reduced low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon 30D APS-C 8.2 3504 2336none21.510.873659
2.
 
Canon G7 X 1-inch 20.0 5472 36481080/60p23.012.755671
3.
 
Canon G7 X Mark II 1-inch 20.0 5472 36481080/60p........
4.
 
Canon G5 X 1-inch 20.0 5472 36481080/60p........
5.
 
Canon G9 X 1-inch 20.0 5472 36481080/60p21.512.349563
6.
 
Canon M3 APS-C 24.0 6000 40001080/30p22.811.8116972
7.
 
Canon 70D APS-C 20.0 5472 36481080/30p22.511.692668
8.
 
Canon 60D APS-C 17.9 5184 34561080/30p22.211.581366
9.
 
Canon 7D APS-C 17.9 5184 34561080/30p22.011.785466
10.
 
Canon 50D APS-C 15.1 4752 3168none21.811.469663
11.
 
Canon 40D APS-C 10.1 3888 2592none22.111.370364
12.
 
Canon XTi APS-C 10.1 3888 2592none22.111.066462
13.
 
Canon XT APS-C 8.0 3456 2304none21.810.863760
14.
 
Canon 20D APS-C 8.2 3504 2336none21.911.072162
15.
 
Canon 10D APS-C 6.3 3072 2048none21.110.957157
16.
 
Canon Rebel APS-C 6.3 3072 2048none21.010.854455
17.
 
Sony RX100 II 1-inch 20.0 5472 36481080/60p22.512.448367

Many modern cameras cannot only take still pictures, but also record videos. The G7X indeed provides for movie recording, while the 30D does not. The highest resolution format that the G7X can use is 1080/60p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the 30D has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the G7X relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the Canon 30D, the Canon G7 X, and comparable cameras.

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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)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Canon 30Doptical Y 2.5 230 fixed n 1/8000s 5.0 Y n
2.
 
Canon G7 Xnone n 3.0 1040 tilting Y 1/2000s 6.5 Y Y
3.
 
Canon G7 X Mark IInone n 3.0 1040 tilting Y 1/2000s 8.0 Y Y
4.
 
Canon G5 X2360 n 3.0 1040 swivel Y 1/2000s 5.9 Y Y
5.
 
Canon G9 Xnone n 3.0 1040 fixed Y 1/2000s 6.0 Y Y
6.
 
Canon M3optional n 3.0 1040 tilting Y 1/4000s 4.2 Y n
7.
 
Canon 70Doptical Y 3.0 1040 swivel Y 1/8000s 7.0 Y n
8.
 
Canon 60Doptical Y 3.0 1040 swivel n 1/8000s 5.3 Y n
9.
 
Canon 7Doptical Y 3.0 920 fixed n 1/8000s 8.0 Y n
10.
 
Canon 50Doptical Y 3.0 920 fixed n 1/8000s 6.3 Y n
11.
 
Canon 40Doptical Y 3.0 230 fixed n 1/8000s 6.5 Y n
12.
 
Canon XTioptical n 2.5 230 fixed n 1/4000s 3.0 Y n
13.
 
Canon XToptical n 1.8 115 fixed n 1/4000s 3.0 Y n
14.
 
Canon 20Doptical Y 1.8 118 fixed n 1/8000s 5.0 Y n
15.
 
Canon 10Doptical Y 1.8 118 fixed n 1/4000s 3.0 Y n
16.
 
Canon Rebeloptical n 1.8 118 fixed n 1/4000s 2.5 Y n
17.
 
Sony RX100 IIoptional n 3.0 1229 tilting n 1/2000s 10.0 Y Y

One feature that is present on the 30D, but is missing on the G7X 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 G7X has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the 30D does not have a selfie-screen.

The Canon G7 X 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 30D writes its imaging data to Compact Flash cards, while the G7X uses SDXC cards.

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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 30D and Canon PowerShot G7 X and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon 30DY-----2.0---
2.
 
Canon G7 X-stereomono--micro2.0YY-
3.
 
Canon G7 X Mark II-stereomono--micro2.0YY-
4.
 
Canon G5 XYstereomono--mini2.0YY-
5.
 
Canon G9 X-stereomono--micro2.0YY-
6.
 
Canon M3YstereomonoY-mini2.0YY-
7.
 
Canon 70DYstereomonoY-mini2.0Y--
8.
 
Canon 60DYmonomonoY-mini2.0---
9.
 
Canon 7DYmono-Y-mini2.0---
10.
 
Canon 50DY----mini2.0---
11.
 
Canon 40DY-----2.0---
12.
 
Canon XTiY-----2.0---
13.
 
Canon XTY-----2.0---
14.
 
Canon 20DY-----1.1---
15.
 
Canon 10DY-----1.1---
16.
 
Canon RebelY-----1.1---
17.
 
Sony RX100 IIYstereomono--micro2.0YY-

It is notable that the 30D has a hotshoe, while the G7X does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Studio photographers will appreciate that the Canon 30D (unlike the G7X) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the 30D and the G7X have been discontinued, but can regularly be found used on eBay. The 30D was replaced by the Canon 40D, while the G7X was followed by the Canon G7 X Mark II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon website.

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Review summary

So how do things add up? Which of the two cameras – the Canon 30D or the Canon G7 X – 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.


Arguments in favor of the Canon EOS 30D:

  • Better low-light sensitivity: Requires less light for good images (0.4 stops ISO advantage).
  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
  • More flexible: Can take a variety of interchangeable lenses, including specialty optics.
  • Longer lasting: Can take more shots (750 versus 210) on a single battery charge.
  • Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • More heavily discounted: Has been available for much longer (launched in February 2006).


Reasons to prefer the Canon PowerShot G7 X:

  • More detail: Has more megapixels (20 vs 8.2MP), which boosts linear resolution by 56%.
  • Better image quality: Scores substantially higher (12 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (1.5 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (1.9 EV of extra DR).
  • Better jpgs: Has a more modern image processing engine (DIGIC 6 vs DIGIC 2).
  • Broader imaging potential: Can capture not only stills but also 1080/60p 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 a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (6.5 vs 5 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Ready to shoot: Comes with an integrated lens, while the 30D requires a separate lens.
  • More compact: Is smaller (103x60mm vs 144x106mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight even though it has a lens built in (unlike the 30D).
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • 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.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.
  • More modern: Reflects 8 years and 6 months of technical progress since the 30D launch.

If the number of relative strengths (bullet points above) is taken as a guide, the G7X is the clear winner of the contest (21 : 9 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.

30D 09:21 G7X

How about other alternatives? Do the specifications of the Canon 30D and the Canon G7 X 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the 30D and the G7X in practical situations. 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], 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.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 30D..+ ++ +o.. Feb 2006 1,399i
2.
 
Canon G7 X4/5+ +77/1004.5/54.5/5 Sep 2014 699i
3.
 
Canon G7 X Mark II4.5/5+ +81/1004.5/54.5/5 Feb 2016 699i
4.
 
Canon G5 X5/5+ +78/1004.5/54.5/5 Oct 2015 799i
5.
 
Canon G9 X3.5/5+ +..4.5/54.5/5 Oct 2015 529i
6.
 
Canon M34/5o75/1004.5/54/5 Feb 2015 679i
7.
 
Canon 70D5/5+ +83/1004.5/55/5 Jul 2013 1,199i
8.
 
Canon 60D5/5+79/1004/54.5/5 Aug 2010 1,399i
9.
 
Canon 7D5/5+ +84/1004.5/54.5/5 Sep 2009 1,699i
10.
 
Canon 50D..+ ++ +4.5/54.5/5 Aug 2008 1,299i
11.
 
Canon 40D..+ ++ +4.5/54.5/5 Aug 2007 1,299i
12.
 
Canon XTi..+ ++ +o4/5 Aug 2006 799i
13.
 
Canon XT..80/100+ +o.. Feb 2005 899i
14.
 
Canon 20D....+ +.... Aug 2004 1,499i
15.
 
Canon 10D....+ +.... Feb 2003 1,999i
16.
 
Canon Rebel....+ +.... Aug 2003 899i
17.
 
Sony RX100 II5/5+ +79/1004.5/54.5/5 Jun 2013 749i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

Canon 30D:
Check Ebay offers
Canon G7 X:
Check Ebay offers

Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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    Specifications: Canon 30D vs Canon G7 X

    Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

    Camera Specifications
    Camera Model Canon 30D Canon G7 X
    Camera Type Digital single lens reflex Fixed lens compact camera
    Camera Lens Canon EF mount lenses 24-100mm f/1.8-2.8
    Launch Date February 2006 September 2014
    Launch Price USD 1,399 USD 699
    Sensor Specs Canon 30D Canon G7 X
    Sensor Technology CMOS BSI-CMOS
    Sensor Format APS-C Sensor 1" Sensor
    Sensor Size 22.5 x 15.0 mm 13.2 x 8.8 mm
    Sensor Area 337.5 mm2 116.16 mm2
    Sensor Diagonal 27 mm 15.9 mm
    Crop Factor 1.6x 2.7x
    Sensor Resolution 8.2 Megapixels 20 Megapixels
    Image Resolution 3504 x 2336 pixels 5472 x 3648 pixels
    Pixel Pitch 6.42 μm 2.41 μm
    Pixel Density 2.43 MP/cm2 17.18 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 1080/60p Video
    ISO Setting 100 - 1,600 ISO 125 - 12,800 ISO
    ISO Boost 100 - 3,200 ISO no Enhancement
    Image Processor DIGIC 2 DIGIC 6
    DXO Sensor Quality (score) 59 71
    DXO Color Depth (bits) 21.5 23.0
    DXO Dynamic Range (EV) 10.8 12.7
    DXO Low Light (ISO) 736 556
    Screen Specs Canon 30D Canon G7 X
    Viewfinder Type Optical viewfinder no viewfinder
    Viewfinder Field of View 95%
    Viewfinder Magnification 0.56x
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View
    Rear LCD Size 2.5inch 3.0inch
    LCD Resolution 230k dots 1040k dots
    LCD Attachment Fixed screen Tilting screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Canon 30D Canon G7 X
    Focus System Phase-detect AF Contrast-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/2000s
    Continuous Shooting 5 shutter flaps/s 6.5 shutter flaps/s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Fill Flash Build-in Flash Build-in Flash
    Storage Medium CF cards SDXC cards
    Second Storage Option Single card slot Single card slot
    Connectivity Specs Canon 30D Canon G7 X
    External Flash Hotshoe no Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI micro HDMI
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Body Specs Canon 30D Canon G7 X
    Battery Type BP-511A NB-13L
    Battery Life (CIPA)750 shots per charge210 shots per charge
    Body Dimensions 144 x 106 x 74 mm
    (5.7 x 4.2 x 2.9 in)
    103 x 60 x 40 mm
    (4.1 x 2.4 x 1.6 in)
    Camera Weight 785 g (27.7 oz) 304 g (10.7 oz)

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