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Canon XSi vs Sony A1

The Canon EOS Rebel XSi (called Canon 450D in some regions) and the Sony A1 are two digital cameras that were revealed to the public, respectively, in January 2008 and January 2021. The XSi is a DSLR, while the A1 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (XSi) and a full frame (A1) sensor. The Canon has a resolution of 12.2 megapixels, whereas the Sony provides 49.8 MP.

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

Headline Specifications
Canon XSi
versus
Sony A1
Canon XSi   Sony A1
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Sony E mount lenses
12.2 MP – APS-C sensor 49.8 MP – Full Frame sensor
no Video 8k/30p Video
ISO 100-1,600 ISO 100-32,000 (500 - 102,400)
Optical viewfinder Electronic viewfinder (9437k dots)
3.0" LCD – 230k dots 3.0" LCD – 1440k dots
Fixed screen (not touch-sensitive) Tilting touchscreen
3.5 shutter flaps per second 10 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
500 shots per battery charge530 shots per battery charge
129 x 98 x 62 mm, 524 g 129 x 97 x 81 mm, 737 g
Canon XSi:
Check Ebay offers
Sony A1:
Check Amazon price

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS Rebel XSi and the Sony A1? 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 side-by-side display below illustrates the physical size and weight of the Canon XSi and the Sony A1. 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 dimensions are rounded to the nearest millimeter.

Size Canon XSi vs Sony A1
Compare XSi versus A1 top
Comparison XSi or A1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A1 is somewhat smaller (1 percent) than the Canon XSi. However, the A1 is substantially heavier (41 percent) than the XSi. It is noteworthy in this context that the A1 is splash and dust-proof, while the XSi 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. 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 (XSi) and the Sony FE Lens Catalog (A1). Mirrorless cameras, such as the A1, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.

Concerning battery life, the XSi gets 500 shots out of its LP-E5 battery, while the A1 can take 530 images on a single charge of its NP-FZ100 power pack. The power pack in the A1 can be charged via the USB port, which can be very convenient when travelling.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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.

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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 XSi 129 mm 98 mm 62 mm 524 g 500 n Jan 2008 799i
2.
 
Sony A1 129 mm 97 mm 81 mm 737 g 530 Y Jan 2021 6,499 i
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 T4i 133 mm 100 mm 79 mm 575 g 440 n Jun 2012 849i
6.
 
Canon T3 130 mm 100 mm 78 mm 495 g 700 n Feb 2011 449i
7.
 
Canon T2i 129 mm 98 mm 62 mm 530 g 440 n Feb 2010 699i
8.
 
Canon T1i 129 mm 98 mm 62 mm 520 g 400 n Mar 2009 799i
9.
 
Canon XS 126 mm 98 mm 65 mm 502 g 500 n Jun 2008 449i
10.
 
Canon 40D 146 mm 108 mm 74 mm 822 g 750 n Aug 2007 1,299i
11.
 
Canon XTi 127 mm 84 mm 65 mm 556 g 370 n Aug 2006 799i
12.
 
Canon XT 127 mm 94 mm 64 mm 540 g 400 n Feb 2005 899i
13.
 
Sony A7R IV 129 mm 96 mm 78 mm 665 g 670 Y Jul 2019 3,499 i
14.
 
Sony A7 III 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 1,999 i
15.
 
Sony A7R III 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199i
16.
 
Sony A99 II 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 3,199 i
17.
 
Sony A7R II 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199i
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. The XSi was launched at a markedly lower price (by 88 percent) than the A1, which puts it into a different market segment. 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 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. 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 XSi features an APS-C sensor and the Sony A1 a full frame sensor. The sensor area in the A1 is 162 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon XSi and Sony A1 sensor measures

With 49.8MP, the A1 offers a higher resolution than the XSi (12.2MP), but the A1 has smaller individual pixels (pixel pitch of 4.16μm versus 5.19μm for the XSi). Yet, the A1 is a much more recent model (by 13 years) than the XSi, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the A1 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A1 for good quality output (200 dots per inch) amounts to 43.2 x 28.8 inches or 109.7 x 73.2 cm, for very good quality (250 dpi) 34.6 x 23 inches or 87.8 x 58.5 cm, and for excellent quality (300 dpi) 28.8 x 19.2 inches or 73.2 x 48.8 cm. The corresponding values for the Canon XSi are 21.4 x 14.2 inches or 54.3 x 36.2 cm for good quality, 17.1 x 11.4 inches or 43.4 x 28.9 cm for very good quality, and 14.2 x 9.5 inches or 36.2 x 24.1 cm for excellent quality prints.

The A1 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the XSi, the A1 has the capacity to capture high quality composite images (YESMP) by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).

The Canon EOS Rebel XSi has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Sony A1 are ISO 100 to ISO 32000, with the possibility to increase the ISO range to 500-102400.

XSi versus A1 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. Of the two cameras under consideration, the A1 offers substantially better image quality than the XSi (overall score 37 points higher). The advantage is based on 4 bits higher color depth, 3.7 EV in additional dynamic range, and 2.2 stops in additional 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 XSi APS-C 12.2 4272 2848none21.910.869261
2.
 
Sony A1 Full Frame 49.8 8640 57608k/30p25.914.5316398
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 T4i APS-C 17.9 5184 34561080/30p21.711.272262
6.
 
Canon T3 APS-C 12.2 4272 2848720/30p21.911.075562
7.
 
Canon T2i APS-C 17.9 5184 34561080/30p22.111.578466
8.
 
Canon T1i APS-C 15.1 4752 31681080/20p21.711.566363
9.
 
Canon XS APS-C 10.1 3888 2592none22.111.478364
10.
 
Canon 40D APS-C 10.1 3888 2592none22.111.370364
11.
 
Canon XTi APS-C 10.1 3888 2592none22.111.066462
12.
 
Canon XT APS-C 8.0 3456 2304none21.810.863760
13.
 
Sony A7R IV Full Frame 60.2 9504 63364K/30p26.014.8334499
14.
 
Sony A7 III Full Frame 24.0 6000 40004K/30p25.014.7373096
15.
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523100
16.
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792
17.
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.9343498
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 A1 indeed provides for movie recording, while the XSi does not. The highest resolution format that the A1 can use is 8k/30p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the A1 has an electronic viewfinder (9437k dots), while the XSi has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinder in the A1 offers a wider field of view (100%) than the one in the XSi (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A1 has a higher magnification (0.9x vs 0.54x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Canon XSi and Sony A1 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 XSioptical n3.0 / 230 fixed n 1/4000s 3.5/s Y n
2.
 
Sony A19437 n3.0 / 1440 tilting Y 1/8000s 10.0/s n Y
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 T4ioptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
6.
 
Canon T3optical n2.7 / 230 fixed n 1/4000s 3.0/s Y n
7.
 
Canon T2ioptical n3.0 / 1040 fixed n 1/4000s 3.7/s Y n
8.
 
Canon T1ioptical n3.0 / 920 fixed n 1/4000s 3.4/s Y n
9.
 
Canon XSoptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
10.
 
Canon 40Doptical Y3.0 / 230 fixed n 1/8000s 6.5/s Y n
11.
 
Canon XTioptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
12.
 
Canon XToptical n1.8 / 115 fixed n 1/4000s 3.0/s Y n
13.
 
Sony A7R IV5760 n3.0 / 1440 tilting Y 1/8000s 10.0/s n Y
14.
 
Sony A7 III2359 n3.0 / 922 tilting Y 1/8000s 10.0/s n Y
15.
 
Sony A7R III3686 n3.0 / 1440 tilting Y 1/8000s 10.0/s n Y
16.
 
Sony A99 II2400 Y3.0 / 1229 full-flex n 1/8000s 12.0/s n Y
17.
 
Sony A7R II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The XSi has one, while the A1 does not. While the built-in flash of the XSi is not very powerful, it can at times be useful as a fill-in light.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the A1 is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

The Sony A1 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 XSi writes its imaging data to SDHC cards, while the A1 uses CFexpress or SDXC cards. The A1 features dual card slots, which can be very useful in case a memory card fails. In contrast, the XSi only has one slot. The A1 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the XSi 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 Rebel XSi and Sony A1 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 XSiY- / ---mini2.0---
2.
 
Sony A1Ystereo / monoYYfull3.2Y-Y
3.
 
Canon T6iYstereo / monoY-mini2.0YY-
4.
 
Canon T6sYstereo / monoY-mini2.0YY-
5.
 
Canon T4iYstereo / monoY-mini2.0---
6.
 
Canon T3Ystereo / mono--mini2.0---
7.
 
Canon T2iYstereo / -Y-mini2.0---
8.
 
Canon T1iYmono / mono--mini2.0---
9.
 
Canon XSY- / ----2.0---
10.
 
Canon 40DY- / ----2.0---
11.
 
Canon XTiY- / ----2.0---
12.
 
Canon XTY- / ----2.0---
13.
 
Sony A7R IVYstereo / monoYYmicro3.1YYY
14.
 
Sony A7 IIIYstereo / monoYYmicro3.1YYY
15.
 
Sony A7R IIIYstereo / monoYYmicro3.1YYY
16.
 
Sony A99 IIYstereo / monoYYmicro2.0YYY
17.
 
Sony A7R IIYstereo / monoYYmicro2.0YY-

It is notable that the A1 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the XSi does not provide wifi capability.

Studio photographers will appreciate that the Sony A1 (unlike the XSi) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The A1 is a recent model that features in the current product line-up of Sony. In contrast, the XSi has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the XSi was succeeded by the Canon T1i. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Sony websites.

Review summary

So what conclusions can be drawn? Is the Canon XSi better than the Sony A1 or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Arguments in favor of the Canon EOS Rebel XSi:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Less heavy: Is lighter (by 213g or 29 percent) and hence easier to carry around.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (88 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in January 2008).

ilogo

Advantages of the Sony A1:

  • More detail: Has more megapixels (49.8 vs 12.2MP), which boosts linear resolution by 102%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better image quality: Scores substantially higher (37 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (4 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (3.7 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (2.2 stops ISO advantage).
  • Broader imaging potential: Can capture not only stills but also 8k/30p video.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.9x vs 0.54x).
  • More detailed LCD: Has a higher resolution rear screen (1440k 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.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (10 vs 3.5 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Faster data transfer: Supports a more advanced USB protocol (3.2 vs 2.0).
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-II standard.
  • More modern: Reflects 13 years of technical progress since the XSi launch.

If the count of individual advantages (bullet points above) is taken as a guide, the A1 is the clear winner of the contest (30 : 6 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 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.

XSi 06:30 A1

How about other alternatives? Do the specifications of the Canon XSi and the Sony A1 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the XSi or the A1. 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 why hands-on reviews by experts 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.

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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 XSi..+ +..+ +4/54.5/5 Jan 2008 799i
2.
 
Sony A15/5o4.5/593/1004.5/55/5 Jan 2021 6,499 i
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 T4i4/5+ +..77/1004.5/54.5/5 Jun 2012 849i
6.
 
Canon T3..80/100..69/1004/54.5/5 Feb 2011 449i
7.
 
Canon T2i..+ +..77/1004/54.5/5 Feb 2010 699i
8.
 
Canon T1i..+ +..74/1004.5/54.5/5 Mar 2009 799i
9.
 
Canon XS..82/100..+ +3.5/54.5/5 Jun 2008 449i
10.
 
Canon 40D..+ +..+ +4.5/54.5/5 Aug 2007 1,299i
11.
 
Canon XTi..+ +..+ +o4/5 Aug 2006 799i
12.
 
Canon XT..80/100..+ +o.. Feb 2005 899i
13.
 
Sony A7R IV5/5+4.5/591/1004.5/55/5 Jul 2019 3,499 i
14.
 
Sony A7 III..+ +4.5/589/1005/55/5 Feb 2018 1,999 i
15.
 
Sony A7R III..+ +4/590/1004.5/55/5 Oct 2017 3,199i
16.
 
Sony A99 II....4.5/585/1004.5/54.5/5 Sep 2016 3,199 i
17.
 
Sony A7R II5/5+ +5/590/1005/55/5 Jun 2015 3,199i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

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 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.

Canon XSi:
Check Ebay offers
Sony A1:
Check Amazon price

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. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Canon XSi vs Sony A1

    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 XSi Sony A1
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Canon EF mount lenses Sony E mount lenses
    Launch Date January 2008 January 2021
    Launch Price USD 799 USD 6,499
    Sensor Specs Canon XSi Sony A1
    Sensor Technology CMOS BSI-CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 22.2 x 14.8 mm 35.9 x 24.0 mm
    Sensor Area 328.56 mm2 861.6 mm2
    Sensor Diagonal 26.7 mm 43.2 mm
    Crop Factor 1.6x 1.0x
    Sensor Resolution 12.2 Megapixels 49.8 Megapixels
    Image Resolution 4272 x 2848 pixels 8640 x 5760 pixels
    Pixel Pitch 5.19 μm 4.16 μm
    Pixel Density 3.70 MP/cm2 5.78 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability no Video 8k/30p Video
    ISO Setting 100 - 1,600 ISO 100 - 32,000 ISO
    ISO Boost no Enhancement 500 - 102,400 ISO
    Image Processor DIGIC 3 Dual BIONZ XR
    DXO Sensor Quality (score) 61 98
    DXO Color Depth (bits) 21.9 25.9
    DXO Dynamic Range (EV) 10.8 14.5
    DXO Low Light (ISO) 692 3163
    Screen Specs Canon XSi Sony A1
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.54x 0.9x
    Viewfinder Resolution 9437k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 230k dots 1440k dots
    LCD Attachment Fixed screen Tilting screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Canon XSi Sony A1
    Focus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 3.5 shutter flaps/s 10 shutter flaps/s
    Shutter Life Expectancy100 000 actuations500 000 actuations
    Electronic Shutterno E-Shutterup to 1/32000s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDHC cards CFexpress or SDXC cards
    Second Storage Option Single card slot Dual card slots
    UHS card support no UHS-II
    Connectivity Specs Canon XSi Sony A1
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 3.2
    HDMI Port mini HDMI full HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Body Specs Canon XSi Sony A1
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type LP-E5 NP-FZ100
    Battery Life (CIPA)500 shots per charge530 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 129 x 98 x 62 mm
    (5.1 x 3.9 x 2.4 in)
    129 x 97 x 81 mm
    (5.1 x 3.8 x 3.2 in)
    Camera Weight 524 g (18.5 oz) 737 g (26.0 oz)
    Canon XSi:
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    Sony A1:
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