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Canon XTi vs Pentax K-3 II

The Canon EOS Rebel XTi (called Canon 400D in some regions) and the Pentax K-3 II are two digital cameras that were announced, respectively, in August 2006 and April 2015. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Canon has a resolution of 10.1 megapixels, whereas the Pentax provides 24.1 MP.

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

Headline Specifications
Canon XTi
versus
Pentax K-3 II
Canon XTi   Pentax K-3 II
Digital single lens reflex Digital single lens reflex
Canon EF mount lenses Pentax K mount lenses
10.1 MP, APS-C Sensor 24.1 MP, APS-C Sensor
no Video 1080/60i Video
ISO 100-1,600 ISO 100-51,200
Optical viewfinder Optical viewfinder
2.5 LCD, 230k dots 3.2 LCD, 1037k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
3 shutter flaps per second 8.3 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
370 shots per battery charge720 shots per battery charge
127 x 84 x 65 mm, 556 g 131 x 100 x 77 mm, 800 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS Rebel XTi and the Pentax K-3 II? 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 XTi and the Pentax K-3 II. 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.

The K-3 II can be obtained in two different colors (black, silver), while the XTi is only available in black.

Size Canon XTi vs Pentax K-3 II
Compare XTi versus K-3 II top
Comparison XTi or K-3 II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-3 II is notably larger (23 percent) than the Canon XTi. Moreover, the K-3 II is substantially heavier (44 percent) than the XTi. It is noteworthy in this context that the K-3 II is splash and dust-proof, while the XTi 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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the XTi gets 370 shots out of its NB-2LH battery, while the K-3 II can take 720 images on a single charge of its D-LI90 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 XTi 127 mm 84 mm 65 mm 556 g 370 n Aug 2006 799i
2.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099i
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 XSi 129 mm 98 mm 62 mm 524 g 500 n Jan 2008 799i
10.
 
Canon 40D 146 mm 108 mm 74 mm 822 g 750 n Aug 2007 1,299i
11.
 
Canon XT 127 mm 94 mm 64 mm 540 g 400 n Feb 2005 899i
12.
 
Canon Rebel 142 mm 99 mm 72 mm 649 g 400 n Aug 2003 899i
13.
 
Pentax K-3 III 135 mm 104 mm 74 mm 820 g 800 Y Mar 2021 1,999 i
14.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 1,099 i
15.
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 649 i
16.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299i
17.
 
Pentax K-5 131 mm 97 mm 73 mm 760 g 740 Y Sep 2010 1,099i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will naturally be influenced heavily by the price. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The XTi was launched at a markedly lower price (by 27 percent) than the K-3 II, 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 size of the sensor inside a digital camera is one of the key determinants 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 associated with larger, more expensive camera bodies and lenses.

Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the K-3 II is 12 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.6 (XTi) and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon XTi and Pentax K-3 II sensor measures

With 24.1MP, the K-3 II offers a higher resolution than the XTi (10.1MP), but the K-3 II has smaller individual pixels (pixel pitch of 3.90μm versus 5.71μm for the XTi). Yet, the K-3 II is a much more recent model (by 8 years and 7 months) than the XTi, 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 K-3 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Pentax K-3 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-3 II for good quality output (200 dots per inch) amounts to 30.1 x 20 inches or 76.4 x 50.8 cm, for very good quality (250 dpi) 24.1 x 16 inches or 61.1 x 40.6 cm, and for excellent quality (300 dpi) 20.1 x 13.3 inches or 50.9 x 33.9 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.

Unlike the XTi, the K-3 II has the capacity to capture high quality composite images 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 XTi has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Pentax K-3 II are ISO 100 to ISO 51200 (no boost).

XTi versus K-3 II MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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 K-3 II offers substantially better image quality than the XTi (overall score 18 points higher). The advantage is based on 1.5 bits higher color depth, 2.6 EV in additional dynamic range, and 0.7 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 XTi APS-C 10.1 3888 2592none22.111.066462
2.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
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 XSi APS-C 12.2 4272 2848none21.910.869261
10.
 
Canon 40D APS-C 10.1 3888 2592none22.111.370364
11.
 
Canon XT APS-C 8.0 3456 2304none21.810.863760
12.
 
Canon Rebel APS-C 6.3 3072 2048none21.010.854455
13.
 
Pentax K-3 III APS-C 25.6 6192 41284K/30p........
14.
 
Pentax KP APS-C 24.1 6016 40001080/60i........
15.
 
Pentax K-70 APS-C 24.0 6000 40001080/60i........
16.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
17.
 
Pentax K-5 APS-C 16.1 4928 32641080/25p23.714.1116282

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The K-3 II indeed provides for movie recording, while the XTi does not. The highest resolution format that the K-3 II can use is 1080/60i.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The XTi and the K-3 II 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 viewfinder in the K-3 II offers a wider field of view (100%) than the one in the XTi (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the K-3 II has a higher magnification (0.63x vs 0.49x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Canon XTi, the Pentax K-3 II, and comparable cameras.

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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)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Canon XTioptical n2.5 / 230 fixed n 1/4000s 3.0 Y n
2.
 
Pentax K-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3 n Y
3.
 
Canon T6ioptical n3.0 / 1040 swivel Y 1/4000s 5.0 Y n
4.
 
Canon T6soptical Y3.0 / 1040 swivel Y 1/4000s 5.0 Y n
5.
 
Canon T4ioptical n3.0 / 1040 swivel Y 1/4000s 5.0 Y n
6.
 
Canon T3optical n2.7 / 230 fixed n 1/4000s 3.0 Y n
7.
 
Canon T2ioptical n3.0 / 1040 fixed n 1/4000s 3.7 Y n
8.
 
Canon T1ioptical n3.0 / 920 fixed n 1/4000s 3.4 Y n
9.
 
Canon XSioptical n3.0 / 230 fixed n 1/4000s 3.5 Y n
10.
 
Canon 40Doptical Y3.0 / 230 fixed n 1/8000s 6.5 Y n
11.
 
Canon XToptical n1.8 / 115 fixed n 1/4000s 3.0 Y n
12.
 
Canon Rebeloptical n1.8 / 118 fixed n 1/4000s 2.5 Y n
13.
 
Pentax K-3 IIIoptical Y3.2 / 1620 fixed Y 1/8000s 12.0 n Y
14.
 
Pentax KPoptical n3.0 / 921 tilting n 1/6000s 7.0 Y Y
15.
 
Pentax K-70optical n3.0 / 921 swivel n 1/6000s 6.0 Y Y
16.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3 Y Y
17.
 
Pentax K-5optical Y3.0 / 921 fixed n 1/8000s 7.0 Y Y

One difference between the cameras concerns the presence of an on-board flash. The XTi has one, while the K-3 II does not. While the built-in flash of the XTi is not very powerful, it can at times be useful as a fill-in light.

The Pentax K-3 II 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 XTi writes its imaging data to Compact Flash cards, while the K-3 II uses SDXC cards. The K-3 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the XTi 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 Rebel XTi and Pentax K-3 II 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 XTiY- / ----2.0---
2.
 
Pentax K-3 IIYmono / monoYYmini3.0---
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 XSiY- / ---mini2.0---
10.
 
Canon 40DY- / ----2.0---
11.
 
Canon XTY- / ----2.0---
12.
 
Canon RebelY- / ----1.1---
13.
 
Pentax K-3 IIIYstereo / monoYYmicro3.2Y-Y
14.
 
Pentax KPYstereo / monoY--2.0Y--
15.
 
Pentax K-70Ystereo / monoY-mini2.0Y--
16.
 
Pentax K-3Ymono / monoYYmini3.0---
17.
 
Pentax K-5Ystereo / monoY-mini2.0---

Studio photographers will appreciate that the Pentax K-3 II (unlike the XTi) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Travel and landscape photographers will find it useful that the K-3 II has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the XTi and the K-3 II have been discontinued, but can regularly be found used on eBay. The XTi was replaced by the Canon Xsi, while the K-3 II was followed by the Pentax K-3 III. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Pentax websites.

Review summary

So how do things add up? Is the Canon XTi better than the Pentax K-3 II or vice versa? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Canon EOS Rebel XTi:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • More compact: Is smaller (127x84mm vs 131x100mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 244g or 30 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 (27 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in August 2006).

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Arguments in favor of the Pentax K-3 II:

  • More detail: Has more megapixels (24.1 vs 10.1MP), which boosts linear resolution by 55%.
  • 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 (18 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 (2.6 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (0.7 stops ISO advantage).
  • Broader imaging potential: Can capture not only stills but also 1080/60i video.
  • 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 (0.63x vs 0.49x).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 2.5") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1037k vs 230k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (8.3 vs 3 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Gets more shots (720 versus 370) out of a single battery charge.
  • 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.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • 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.
  • More modern: Reflects 8 years and 7 months of technical progress since the XTi launch.

If the count of relative strengths (bullet points above) is taken as a measure, the K-3 II is the clear winner of the contest (24 : 6 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 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.

XTi 06:24 K-3 II

How about other alternatives? Do the specifications of the Canon XTi and the Pentax K-3 II 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 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 XTi or the K-3 II. 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.

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 XTi..+ +..+ +o4/5 Aug 2006 799i
2.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 1,099i
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 XSi..+ +..+ +4/54.5/5 Jan 2008 799i
10.
 
Canon 40D..+ +..+ +4.5/54.5/5 Aug 2007 1,299i
11.
 
Canon XT..80/100..+ +o.. Feb 2005 899i
12.
 
Canon Rebel......+ +.... Aug 2003 899i
13.
 
Pentax K-3 III............ Mar 2021 1,999 i
14.
 
Pentax KP4/5..3/582/1005/54.5/5 Jan 2017 1,099 i
15.
 
Pentax K-704.5/5....79/1004.5/54.5/5 Jun 2016 649 i
16.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 1,299i
17.
 
Pentax K-54/5....83/1005/54.5/5 Sep 2010 1,099i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated 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. 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 XTi:
Check Ebay offers
Pentax K-3 II:
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 XTi vs Pentax K-3 II

    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 XTi Pentax K-3 II
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Canon EF mount lenses Pentax K mount lenses
    Launch Date August 2006 April 2015
    Launch Price USD 799 USD 1,099
    Sensor Specs Canon XTi Pentax K-3 II
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 22.2 x 14.8 mm 23.5 x 15.6 mm
    Sensor Area 328.56 mm2 366.6 mm2
    Sensor Diagonal 26.7 mm 28.2 mm
    Crop Factor 1.6x 1.5x
    Sensor Resolution 10.1 Megapixels 24.1 Megapixels
    Image Resolution 3888 x 2592 pixels 6016 x 4000 pixels
    Pixel Pitch 5.71 μm 3.90 μm
    Pixel Density 3.07 MP/cm2 6.56 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability no Video 1080/60i Video
    ISO Setting 100 - 1,600 ISO 100 - 51,200 ISO
    Image Processor DIGIC II PRIME III
    DXO Sensor Quality (score) 62 80
    DXO Color Depth (bits) 22.1 23.6
    DXO Dynamic Range (EV) 11.0 13.6
    DXO Low Light (ISO) 664 1106
    Screen Specs Canon XTi Pentax K-3 II
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.49x 0.63x
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View
    Rear LCD Size 2.5inch 3.2inch
    LCD Resolution 230k dots 1037k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Canon XTi Pentax K-3 II
    Focus System Phase-detect AF Phase-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 3 shutter flaps/s 8.3 shutter flaps/s
    Shutter Life Expectancy50 000 actuations200 000 actuations
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium CF cards SDXC cards
    Second Storage Option Single card slot Dual card slots
    Connectivity Specs Canon XTi Pentax K-3 II
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 3.0
    HDMI Port no HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi no Wifi
    Geotagging no internal GPS GPS built-in
    Body Specs Canon XTi Pentax K-3 II
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type NB-2LH D-LI90
    Battery Life (CIPA)370 shots per charge720 shots per charge
    Body Dimensions 127 x 84 x 65 mm
    (5.0 x 3.3 x 2.6 in)
    131 x 100 x 77 mm
    (5.2 x 3.9 x 3.0 in)
    Camera Weight 556 g (19.6 oz) 800 g (28.2 oz)

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