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Canon G1 X vs XTi

The Canon PowerShot G1 X and the Canon EOS Rebel XTi (labelled Canon 400D in some countries) are two digital cameras that were officially introduced, respectively, in January 2012 and August 2006. The G1X is a fixed lens compact, while the XTi is a DSLR. The cameras are based on an 1.5-inch (G1X) and an APS-C (XTi) sensor. The G1X has a resolution of 14.2 megapixels, whereas the XTi provides 10.1 MP.

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

Headline Specifications
Canon G1 X
versus
Canon XTi
Canon G1 X   Canon XTi
Fixed lens compact camera Digital single lens reflex
28-112mm f/2.8-5.8 Canon EF mount lenses
14.2 MP – 1.5" sensor 10.1 MP – APS-C sensor
1080/24p Video no Video
ISO 100-12,800 ISO 100-1,600
Optical viewfinder Optical viewfinder
3.0" LCD – 922k dots 3.0" LCD – 230k dots
Swivel screen (not touch-sensitive) Fixed screen (not touch-sensitive)
1.9 shutter flaps per second 3 shutter flaps per second
250 shots per battery charge370 shots per battery charge
117 x 81 x 65 mm, 534 g 127 x 84 x 65 mm, 556 g
Canon G1 X:
Check Ebay offers
Canon XTi:
Check Ebay offers

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot G1 X and the Canon EOS Rebel XTi? 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 physical size and weight of the Canon G1 X and the Canon XTi are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter.

Size Canon G1 X vs Canon XTi
Compare G1X versus XTi top
Comparison G1X or XTi rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon XTi is notably larger (13 percent) than the Canon G1 X. In this context, it is worth noting that neither the G1X nor the XTi are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G1X has a lens built in, whereas the XTi 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 XTi and their specifications in the Canon EF Lens Catalog.

Concerning battery life, the G1X gets 250 shots out of its NB-10L battery, while the XTi can take 370 images on a single charge of its NB-2LH power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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.

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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 G1 X 117 mm 81 mm 65 mm 534 g 250 n Jan 2012 799i
2.
 
Canon XTi 127 mm 84 mm 65 mm 556 g 370 n Aug 2006 799i
3.
 
Canon T6i 132 mm 101 mm 78 mm 555 g 440 n Feb 2015 749i
4.
 
Canon T6s 132 mm 101 mm 78 mm 565 g 440 n Feb 2015 649i
5.
 
Canon G1 X Mark II 116 mm 74 mm 66 mm 553 g 240 n Feb 2014 799i
6.
 
Canon G16 109 mm 76 mm 40 mm 356 g 360 n Aug 2013 549 i
7.
 
Canon S120 100 mm 59 mm 29 mm 217 g 230 n Aug 2013 449i
8.
 
Canon SX50 123 mm 87 mm 106 mm 595 g 315 n Sep 2012 429i
9.
 
Canon T4i 133 mm 100 mm 79 mm 575 g 440 n Jun 2012 849i
10.
 
Canon T3 130 mm 100 mm 78 mm 495 g 700 n Feb 2011 449i
11.
 
Canon T1i 129 mm 98 mm 62 mm 520 g 400 n Mar 2009 799i
12.
 
Canon XSi 129 mm 98 mm 62 mm 524 g 500 n Jan 2008 799i
13.
 
Canon XT 127 mm 94 mm 64 mm 540 g 400 n Feb 2005 899i
14.
 
Canon Rebel 142 mm 99 mm 72 mm 649 g 400 n Aug 2003 899i
15.
 
Leica V-LUX 4 125 mm 87 mm 110 mm 588 g 540 n Sep 2012 949i
16.
 
Leica V-LUX 3 124 mm 81 mm 95 mm 540 g 410 n Dec 2011 949i
Note: 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. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its 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 G1 X features an 1.5-inch sensor and the Canon XTi an APS-C sensor. The sensor area in the XTi is 26 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.85 and 1.6. The sensor in the G1X has a native 4:3 aspect ratio, while the one in the XTi offers a 3:2 aspect.

In terms of chip-set technology, the G1X uses a more advanced image processing engine (DIGIC 5) than the XTi (DIGIC II), with benefits for noise reduction, color accuracy, and processing speed.

Canon G1 X and Canon XTi sensor measures

Despite having a smaller sensor, the Canon G1 X offers a higher resolution of 14.2 megapixels, compared with 10.1 MP of the Canon XTi. 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 4.30μm versus 5.71μm for the XTi). However, it should be noted that the G1X is much more recent (by 5 years and 4 months) than the XTi, 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 G1 X implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G1X for good quality output (200 dots per inch) amounts to 21.8 x 16.3 inches or 55.3 x 41.5 cm, for very good quality (250 dpi) 17.4 x 13.1 inches or 44.2 x 33.2 cm, and for excellent quality (300 dpi) 14.5 x 10.9 inches or 36.8 x 27.6 cm. The corresponding values for the Canon XTi are 19.4 x 13 inches or 49.4 x 32.9 cm for good quality, 15.6 x 10.4 inches or 39.5 x 26.3 cm for very good quality, and 13 x 8.6 inches or 32.9 x 21.9 cm for excellent quality prints.

The Canon PowerShot G1 X has a native sensitivity range from ISO 100 to ISO 12800. The corresponding ISO settings for the Canon EOS Rebel XTi are ISO 100 to ISO 1600 (no boost).

G1X versus XTi MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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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 G1 X 1.5-inch 14.2 4352 32641080/24p21.710.864460
2.
 
Canon XTi APS-C 10.1 3888 2592none22.111.066462
3.
 
Canon T6i APS-C 24.0 6000 40001080/30p22.712.091971
4.
 
Canon T6s APS-C 24.0 6000 40001080/30p22.612.091570
5.
 
Canon G1 X Mark II 1.5-inch 13.0 4160 31201080/30p21.510.858158
6.
 
Canon G16 1/1.7 12.0 4000 30001080/60p21.011.723054
7.
 
Canon S120 1/1.7 12.0 4000 30001080/60p21.311.924656
8.
 
Canon SX50 1/2.3 12.0 4000 30001080/24p20.311.217947
9.
 
Canon T4i APS-C 17.9 5184 34561080/30p21.711.272262
10.
 
Canon T3 APS-C 12.2 4272 2848720/30p21.911.075562
11.
 
Canon T1i APS-C 15.1 4752 31681080/20p21.711.566363
12.
 
Canon XSi APS-C 12.2 4272 2848none21.910.869261
13.
 
Canon XT APS-C 8.0 3456 2304none21.810.863760
14.
 
Canon Rebel APS-C 6.3 3072 2048none21.010.854455
15.
 
Leica V-LUX 4 1/2.3 12.0 4000 30001080/60p19.811.150143
16.
 
Leica V-LUX 3 1/2.3 12.0 4000 30001080/60p19.711.043042
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 G1X indeed provides movie recording capabilities, while the XTi does not. The highest resolution format that the G1X can use is 1080/24p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The G1X and the XTi 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 adjacent table lists some of the other core features of the Canon G1 X and Canon XTi along with similar information for a selection of comparators.

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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 G1 Xoptical n3.0 / 922 swivel n 1/4000s 1.9/s Y Y
2.
 
Canon XTioptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
3.
 
Canon T6ioptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
4.
 
Canon T6soptical Y3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
5.
 
Canon G1 X Mark IIoptional n3.0 / 1040 tilting Y 1/4000s 5.2/s Y Y
6.
 
Canon G16optical n3.0 / 922 fixed n 1/4000s 2.2/s Y Y
7.
 
Canon S120none n3.0 / 922 fixed Y 1/2000s 12.1/s Y Y
8.
 
Canon SX50202 n3.0 / 461 swivel n 1/2000s 2.2/s Y Y
9.
 
Canon T4ioptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
10.
 
Canon T3optical n2.7 / 230 fixed n 1/4000s 3.0/s Y n
11.
 
Canon T1ioptical n3.0 / 920 fixed n 1/4000s 3.4/s Y n
12.
 
Canon XSioptical n3.0 / 230 fixed n 1/4000s 3.5/s Y n
13.
 
Canon XToptical n1.8 / 115 fixed n 1/4000s 3.0/s Y n
14.
 
Canon Rebeloptical n1.8 / 118 fixed n 1/4000s 2.5/s Y n
15.
 
Leica V-LUX 41312 n3.0 / 460 swivel n 1/4000s 12.0/s Y Y
16.
 
Leica V-LUX 3202 n3.0 / 460 swivel n 1/2000s 12.0/s Y Y
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
The G1X has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the XTi does not have a selfie-screen.

The G1X writes its imaging data to SDXC cards, while the XTi uses Compact Flash 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 G1 X and Canon EOS Rebel XTi 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
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon G1 XYstereo / mono--mini2.0---
2.
 
Canon XTiY- / ----2.0---
3.
 
Canon T6iYstereo / monoY-mini2.0YY-
4.
 
Canon T6sYstereo / monoY-mini2.0YY-
5.
 
Canon G1 X Mark IIYstereo / mono--mini2.0YY-
6.
 
Canon G16Ystereo / mono--mini2.0Y--
7.
 
Canon S120-stereo / mono--mini2.0Y--
8.
 
Canon SX50Ystereo / mono--mini2.0---
9.
 
Canon T4iYstereo / monoY-mini2.0---
10.
 
Canon T3Ystereo / mono--mini2.0---
11.
 
Canon T1iYmono / mono--mini2.0---
12.
 
Canon XSiY- / ---mini2.0---
13.
 
Canon XTY- / ----2.0---
14.
 
Canon RebelY- / ----1.1---
15.
 
Leica V-LUX 4Ystereo / monoY-mini2.0---
16.
 
Leica V-LUX 3Ystereo / ---mini2.0---

Both the G1X and the XTi have been discontinued, but can regularly be found used on eBay. The XTi was replaced by the Canon Xsi, while the G1X was followed by the Canon G1X 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.

Review summary

So what is the bottom line? Is the Canon G1 X better than the Canon XTi or vice versa? The listing below highlights the relative strengths of the two models.


Advantages of the Canon PowerShot G1 X:

  • More detail: Offers more megapixels (14.2 vs 10.1MP) with a 16% higher linear resolution.
  • Better jpgs: Has a more modern image processing engine (DIGIC 5 vs DIGIC II).
  • Broader imaging potential: Can record not only still images but also 1080/24p movies.
  • 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 (922k vs 230k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Ready to shoot: Comes with a built-in lens, while the XTi requires a separate lens.
  • More compact: Is smaller (117x81mm vs 127x84mm) and thus needs less room in the bag.
  • Less heavy: Is lighter even though it comes with a built-in lens (unlike the XTi).
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • More modern: Reflects 5 years and 4 months of technical progress since the XTi launch.


Arguments in favor of the Canon EOS Rebel XTi:

  • Faster burst: Shoots at higher frequency (3 vs 1.9 flaps/sec) to capture the decisive moment.
  • More flexible: Makes it possible to change lenses and thus to use specialty optics.
  • Longer lasting: Gets more shots (370 versus 250) out of a single battery charge.
  • More heavily discounted: Has been around for much longer (launched in August 2006).

If the count of relative strengths (bullet points above) is taken as a measure, the G1X is the clear winner of the match-up (12 : 4 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 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.

G1X 12:04 XTi

How about other alternatives? Do the specifications of the Canon G1 X and the Canon XTi place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera and Best DSLR Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the G1X or the XTi. 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 hands-on reviews by experts are important. The following table reports the overall ratings of the cameras as published by some of the major 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.

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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 G1 X5/5+..76/1004/54.5/5 Jan 2012 799i
2.
 
Canon XTi..+ +..+ +o4/5 Aug 2006 799i
3.
 
Canon T6i5/5....75/1004.5/54.5/5 Feb 2015 749i
4.
 
Canon T6s5/5+..77/1004.5/54.5/5 Feb 2015 649i
5.
 
Canon G1 X Mark II3/5+..77/1004/54.5/5 Feb 2014 799i
6.
 
Canon G164/5+....4.5/54.5/5 Aug 2013 549 i
7.
 
Canon S120..+ +....4.5/54.5/5 Aug 2013 449i
8.
 
Canon SX503/5+ +..72/1004.5/54.5/5 Sep 2012 429i
9.
 
Canon T4i4/5+ +..77/1004.5/54.5/5 Jun 2012 849i
10.
 
Canon T3..80/100..69/1004/54.5/5 Feb 2011 449i
11.
 
Canon T1i..+ +..74/1004.5/54.5/5 Mar 2009 799i
12.
 
Canon XSi..+ +..+ +4/54.5/5 Jan 2008 799i
13.
 
Canon XT..80/100..+ +o.. Feb 2005 899i
14.
 
Canon Rebel......+ +.... Aug 2003 899i
15.
 
Leica V-LUX 4............ Sep 2012 949i
16.
 
Leica V-LUX 3............ Dec 2011 949i
Notes: (+ +) 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. 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.

Canon G1 X:
Check Ebay offers
Canon XTi:
Check Ebay offers

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 use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Canon G1 X vs Canon XTi

    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 G1 X Canon XTi
    Camera Type Fixed lens compact camera Digital single lens reflex
    Camera Lens 28-112mm f/2.8-5.8 Canon EF mount lenses
    Launch Date January 2012 August 2006
    Launch Price USD 799 USD 799
    Sensor Specs Canon G1 X Canon XTi
    Sensor Technology CMOS CMOS
    Sensor Format 1.5" Sensor APS-C Sensor
    Sensor Size 18.7 x 14.0 mm 22.2 x 14.8 mm
    Sensor Area 261.8 mm2 328.56 mm2
    Sensor Diagonal 23.4 mm 26.7 mm
    Crop Factor 1.85x 1.6x
    Sensor Resolution 14.2 Megapixels 10.1 Megapixels
    Image Resolution 4352 x 3264 pixels 3888 x 2592 pixels
    Pixel Pitch 4.30 μm 5.71 μm
    Pixel Density 5.43 MP/cm2 3.07 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 1080/24p Video no Video
    ISO Setting 100 - 12,800 ISO 100 - 1,600 ISO
    Image Processor DIGIC 5 DIGIC II
    DXO Sensor Quality (score) 60 62
    DXO Color Depth (bits) 21.7 22.1
    DXO Dynamic Range (EV) 10.8 11.0
    DXO Low Light (ISO) 644 664
    Screen Specs Canon G1 X Canon XTi
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 74% 95%
    Viewfinder Magnification 0.49x
    LCD Framing Live View
    Rear LCD Size 3.0inch 2.5inch
    LCD Resolution 922k dots 230k dots
    LCD Attachment Swivel screen Fixed screen
    Shooting Specs Canon G1 X Canon XTi
    Focus System Contrast-detect AF Phase-detect AF
    Continuous Shooting 1.9 shutter flaps/s 3 shutter flaps/s
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium SDXC cards CF cards
    Second Storage Option Single card slot Single card slot
    Connectivity Specs Canon G1 X Canon XTi
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI no HDMI
    Wifi Support no Wifi no Wifi
    Body Specs Canon G1 X Canon XTi
    Battery Type NB-10L NB-2LH
    Battery Life (CIPA)250 shots per charge370 shots per charge
    Body Dimensions 117 x 81 x 65 mm
    (4.6 x 3.2 x 2.6 in)
    127 x 84 x 65 mm
    (5.0 x 3.3 x 2.6 in)
    Camera Weight 534 g (18.8 oz) 556 g (19.6 oz)
    Canon G1 X:
    Check Ebay offers
    Canon XTi:
    Check Ebay offers

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