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Nikon D40 vs Sony A3000

The Nikon D40 and the Sony Alpha A3000 are two digital cameras that were officially introduced, respectively, in November 2006 and August 2013. The D40 is a DSLR, while the A3000 is a mirrorless interchangeable lens camera. Both cameras are equipped with an APS-C sensor. The Nikon has a resolution of 6 megapixels, whereas the Sony provides 19.8 MP.

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

Headline Specifications
Nikon D40 versus Sony A3000
Nikon D40 Sony A3000
Digital single lens reflex Mirrorless system camera
Nikon F mount lenses Sony E mount lenses
6 MP, APS-C Sensor 19.8 MP, APS-C Sensor
no Video 1080/60i Video
ISO 200-1,600 (200 - 3,200) ISO 100-16,000
Optical viewfinder Electronic viewfinder (202k dots)
2.5 LCD, 230k dots 3.0 LCD, 230k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
2.5 shutter flaps per second 2.5 shutter flaps per second
470 shots per battery charge470 shots per battery charge
124 x 94 x 64 mm, 522 g 128 x 91 x 85 mm, 411 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D40 and the Sony Alpha A3000? 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 Nikon D40 and the Sony A3000 is provided in the side-by-side display below. 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 size dimensions are rounded to the nearest millimeter.

Size Nikon D40 vs Sony A3000
Compare D40 versus A3000 top
Comparison D40 or A3000 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon D40 and the Sony A3000 are of equal size. However, the A3000 is markedly lighter (21 percent) than the D40. In this context, it is worth noting that neither the D40 nor the A3000 are weather-sealed.

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. Both cameras have similarly sized sensors, but DSLRs have a larger flange-to-focal plane distance than mirrorless cameras, which imposes contraints on the optical engineering process and generally leads to bigger and heavier lenses. You can compare the optics available for the two cameras in the Nikon Lens Catalog (D40) and the Sony E-Mount Lens Catalog (A3000). Mirrorless cameras, such as the A3000, 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.

The power pack in the A3000 can be charged via the USB port, which can be very convenient when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.
 
Nikon D40 124 mm 94 mm 64 mm 522 g 470 n Nov 2006 499i
2.
 
Sony A3000 128 mm 91 mm 85 mm 411 g 470 n Aug 2013 329i
3.
 
Nikon D3400 124 mm 98 mm 76 mm 445 g 1200 n Aug 2016 499i
4.
 
Nikon D3300 124 mm 98 mm 76 mm 430 g 700 n Jan 2014 499i
5.
 
Nikon D3100 124 mm 96 mm 75 mm 505 g 550 n Aug 2010 599i
6.
 
Nikon D3000 126 mm 97 mm 64 mm 536 g 500 n Jul 2009 599i
7.
 
Nikon D60 126 mm 94 mm 64 mm 522 g 500 n Jan 2008 629i
8.
 
Nikon D40X 124 mm 94 mm 64 mm 522 g 520 n Mar 2007 729i
9.
 
Nikon D80 132 mm 103 mm 77 mm 668 g 600 n Aug 2006 999i
10.
 
Nikon D50 133 mm 102 mm 76 mm 620 g 400 n Apr 2005 749i
11.
 
Nikon D70s 140 mm 111 mm 78 mm 679 g 500 n Apr 2005 899i
12.
 
Nikon D70 140 mm 111 mm 78 mm 679 g 400 n Jan 2004 999i
13.
 
Sony A6400 120 mm 67 mm 50 mm 403 g 410 Y Jan 2019 899 i
14.
 
Sony A6000 120 mm 67 mm 45 mm 344 g 360 n Feb 2014 599i
15.
 
Sony RX1R 113 mm 65 mm 70 mm 482 g 270 n Jun 2013 2,799i
16.
 
Sony NEX-6 120 mm 67 mm 43 mm 345 g 360 n Sep 2012 999i
17.
 
Sony NEX-7 120 mm 67 mm 43 mm 400 g 430 n Aug 2011 1,349i
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 retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The A3000 was launched at a markedly lower price (by 34 percent) than the D40, 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.

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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. 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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the A3000 is 4 percent smaller. They nevertheless have the same format factor of 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Nikon D40 and Sony A3000 sensor measures

Despite having a slightly smaller sensor, the A3000 offers a higher resolution of 19.8 megapixels, compared with 6 MP of the D40. 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 4.25μm versus 7.85μm for the D40). However, it should be noted that the A3000 is much more recent (by 6 years and 9 months) than the D40, 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 Sony A3000 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A3000 for good quality output (200 dots per inch) amounts to 27.3 x 18.2 inches or 69.3 x 46.1 cm, for very good quality (250 dpi) 21.8 x 14.5 inches or 55.4 x 36.9 cm, and for excellent quality (300 dpi) 18.2 x 12.1 inches or 46.2 x 30.8 cm. The corresponding values for the Nikon D40 are 15 x 10 inches or 38.2 x 25.4 cm for good quality, 12 x 8 inches or 30.6 x 20.3 cm for very good quality, and 10 x 6.7 inches or 25.5 x 16.9 cm for excellent quality prints.

The Nikon D40 has a native sensitivity range from ISO 200 to ISO 1600, which can be extended to ISO 200-3200. The corresponding ISO settings for the Sony Alpha A3000 are ISO 100 to ISO 16000 (no boost).

D40 versus A3000 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under consideration, the A3000 offers substantially better image quality than the D40 (overall score 22 points higher). The advantage is based on 2.7 bits higher color depth, 1.8 EV in additional dynamic range, and 0.9 stops in additional low light sensitivity. 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.
 
Nikon D40 APS-C 6.0 3008 2000none21.011.056156
2.
 
Sony A3000 APS-C 19.8 5456 36321080/60i23.712.8106878
3.
 
Nikon D3400 APS-C 24.0 6000 40001080/60p24.813.9119286
4.
 
Nikon D3300 APS-C 24.0 6000 40001080/60p24.312.8138582
5.
 
Nikon D3100 APS-C 14.2 4608 30721080/24p22.511.391967
6.
 
Nikon D3000 APS-C 10.0 3872 2592none22.311.156362
7.
 
Nikon D60 APS-C 10.0 3872 2592none22.511.456265
8.
 
Nikon D40X APS-C 10.0 3872 2592none22.411.451663
9.
 
Nikon D80 APS-C 10.0 3872 2592none22.111.252461
10.
 
Nikon D50 APS-C 6.0 3008 2000none20.910.856055
11.
 
Nikon D70s APS-C 6.0 3008 2000none20.410.352950
12.
 
Nikon D70 APS-C 6.0 3008 2000none20.410.352950
13.
 
Sony A6400 APS-C 24.0 6000 40004K/30p2413.6143183
14.
 
Sony A6000 APS-C 24.0 6000 40001080/60p24.113.1134782
15.
 
Sony RX1R Full Frame 24.0 6000 40001080/60p25.013.6253791
16.
 
Sony NEX-6 APS-C 16.0 4912 32641080/60i23.713.1101878
17.
 
Sony NEX-7 APS-C 24.0 6000 40001080/60i24.113.4101681

Many modern cameras are not only capable of taking still images, but can also record movies. The A3000 indeed provides for movie recording, while the D40 does not. The highest resolution format that the A3000 can use is 1080/60i.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the A3000 has an electronic viewfinder (202k dots), while the D40 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 A3000 offers a wider field of view (100%) than the one in the D40 (95%), so that a larger proportion of the captured image is visible in the finder. On the other hand, the viewfinder of the D40 has a higher magnification (0.53x vs 0.47x), 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 Nikon D40 and Sony A3000 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
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.
 
Nikon D40optical n 2.5 230 fixed n 1/4000s 2.5 Y n
2.
 
Sony A3000202 n 3.0 230 fixed n 1/4000s 2.5 Y n
3.
 
Nikon D3400optical n 3.0 921 fixed n 1/4000s 5.0 Y n
4.
 
Nikon D3300optical n 3.0 921 fixed n 1/4000s 5.0 Y n
5.
 
Nikon D3100optical n 3.0 230 fixed n 1/4000s 3.0 Y n
6.
 
Nikon D3000optical n 3.0 230 fixed n 1/4000s 3.0 Y n
7.
 
Nikon D60optical n 2.5 230 fixed n 1/4000s 3.0 Y n
8.
 
Nikon D40Xoptical n 2.5 230 fixed n 1/4000s 3.0 Y n
9.
 
Nikon D80optical n 2.5 230 fixed n 1/4000s 3.0 Y n
10.
 
Nikon D50optical n 2.0 130 fixed n 1/4000s 2.5 Y n
11.
 
Nikon D70soptical n 2.0 130 fixed n 1/8000s 3.0 Y n
12.
 
Nikon D70optical n 1.8 130 fixed n 1/8000s 3.0 Y n
13.
 
Sony A64002359 n 3.0 922 tilting Y 1/4000s 11.0 Y n
14.
 
Sony A60001440 n 3.0 922 tilting n 1/4000s 11.0 Y n
15.
 
Sony RX1Roptional n 3.0 1229 fixed n 1/4000s 5.0 Y n
16.
 
Sony NEX-62359 n 3.0 921 tilting n 1/4000s 10.0 Y n
17.
 
Sony NEX-72359 n 3.0 921 tilting n 1/4000s 10.0 Y n

The D40 writes its imaging data to SDHC cards, while the A3000 uses SDXC or Memory Stick PRO Duo 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 Nikon D40 and Sony Alpha A3000 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.
 
Nikon D40Y-----2.0---
2.
 
Sony A3000Ystereomono--mini2.0---
3.
 
Nikon D3400Ymonomono--mini2.0--Y
4.
 
Nikon D3300YmonomonoY-mini2.0---
5.
 
Nikon D3100Ymonomono--mini2.0---
6.
 
Nikon D3000Y-----2.0---
7.
 
Nikon D60Y-----2.0---
8.
 
Nikon D40XY-----2.0---
9.
 
Nikon D80Y-----2.0---
10.
 
Nikon D50Y-----2.0---
11.
 
Nikon D70sY-----2.0---
12.
 
Nikon D70Y-----1.0---
13.
 
Sony A6400YstereomonoY-micro2.0YYY
14.
 
Sony A6000Ystereomono--micro2.0YY-
15.
 
Sony RX1RYstereomonoY-mini2.0---
16.
 
Sony NEX-6Ystereomono--mini2.0Y--
17.
 
Sony NEX-7YstereomonoY-mini2.0---

Both the D40 and the A3000 have been discontinued, but can regularly be found used on eBay. The D40 was replaced by the Nikon D40X, while the A3000 does not have a direct successor. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon and Sony websites.

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Review summary

So what is the bottom line? Which of the two cameras – the Nikon D40 or the Sony A3000 – 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.

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Advantages of the Nikon D40:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.53x vs 0.47x).
  • More heavily discounted: Has been available for much longer (launched in November 2006).

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Arguments in favor of the Sony Alpha A3000:

  • More detail: Has more megapixels (19.8 vs 6MP), which boosts linear resolution by 81%.
  • Better image quality: Scores substantially higher (22 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (2.7 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (1.8 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (0.9 stops ISO advantage).
  • Broader imaging potential: Can capture not only stills but also 1080/60i video.
  • 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 screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
  • Less heavy: Has a lower weight (by 111g or 21 percent) and is thus easier to take along.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • More affordable: Was introduced into a lower priced category (34 percent cheaper at launch).
  • More modern: Reflects 6 years and 9 months of technical progress since the D40 launch.

If the count of individual advantages (bullet points above) is taken as a guide, the A3000 is the clear winner of the contest (14 : 3 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

D40 03:14 A3000

How about other alternatives? Do the specifications of the Nikon D40 and the Sony A3000 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 incomplete and does no justice, for example, to the way the D40 or the A3000 perform in practice. 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.
 
Nikon D40..81/100+ +o4.5/5 Nov 2006 499i
2.
 
Sony A30003/5+..4/54/5 Aug 2013 329i
3.
 
Nikon D34004/5+76/1004/54.5/5 Aug 2016 499i
4.
 
Nikon D33003/5+77/1004.5/54.5/5 Jan 2014 499i
5.
 
Nikon D31005/5+ +72/1004.5/54.5/5 Aug 2010 599i
6.
 
Nikon D3000..+72/1004/54.5/5 Jul 2009 599i
7.
 
Nikon D60..80/100+ +4/54.5/5 Jan 2008 629i
8.
 
Nikon D40X..79/100+ +4/54/5 Mar 2007 729i
9.
 
Nikon D80..++ +o4.5/5 Aug 2006 999i
10.
 
Nikon D50..78/100+ +4/54.5/5 Apr 2005 749i
11.
 
Nikon D70s........5/5 Apr 2005 899i
12.
 
Nikon D70....+ +.... Jan 2004 999i
13.
 
Sony A64004/5+85/1004.5/54/5 Jan 2019 899 i
14.
 
Sony A60005/5+80/1004.5/55/5 Feb 2014 599i
15.
 
Sony RX1R5/5....4/54.5/5 Jun 2013 2,799i
16.
 
Sony NEX-65/5+ +78/1004.5/54.5/5 Sep 2012 999i
17.
 
Sony NEX-75/5+ +81/1004.5/55/5 Aug 2011 1,349i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Nikon D40:
Check Ebay offers
Sony A3000:
Check Ebay offers

Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. 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: Nikon D40 vs Sony A3000

    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 Nikon D40 Sony A3000
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Nikon F mount lenses Sony E mount lenses
    Launch Date November 2006 August 2013
    Launch Price USD 499 USD 329
    Sensor Specs Nikon D40 Sony A3000
    Sensor Technology CCD CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 23.7 x 15.6 mm 23.2 x 15.4 mm
    Sensor Area 369.72 mm2 357.28 mm2
    Sensor Diagonal 28.4 mm 27.8 mm
    Crop Factor 1.5x 1.5x
    Sensor Resolution 6 Megapixels 19.8 Megapixels
    Image Resolution 3008 x 2000 pixels 5456 x 3632 pixels
    Pixel Pitch 7.85 μm 4.25 μm
    Pixel Density 1.63 MP/cm2 5.55 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 1080/60i Video
    ISO Setting 200 - 1,600 ISO 100 - 16,000 ISO
    ISO Boost 200 - 3,200 ISO no Enhancement
    DXO Sensor Quality (score) 56 78
    DXO Color Depth (bits) 21.0 23.7
    DXO Dynamic Range (EV) 11.0 12.8
    DXO Low Light (ISO) 561 1068
    Screen Specs Nikon D40 Sony A3000
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.53x 0.47x
    Viewfinder Resolution 202k dots
    LCD Framing Live View
    Rear LCD Size 2.5inch 3.0inch
    LCD Resolution 230k dots 230k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Nikon D40 Sony A3000
    Focus System Phase-detect AF Contrast-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/4000s
    Continuous Shooting 2.5 shutter flaps/s 2.5 shutter flaps/s
    Fill Flash Build-in Flash Build-in Flash
    Storage Medium SDHC cards MS or SDXC cards
    Second Storage Option Single card slot Single card slot
    UHS card support no no
    Connectivity Specs Nikon D40 Sony A3000
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI mini HDMI
    Wifi Support no Wifi no Wifi
    Body Specs Nikon D40 Sony A3000
    Battery Type EN-EL9 NP-FW50
    Battery Life (CIPA)470 shots per charge470 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 124 x 94 x 64 mm
    (4.9 x 3.7 x 2.5 in)
    128 x 91 x 85 mm
    (5.0 x 3.6 x 3.3 in)
    Camera Weight 522 g (18.4 oz) 411 g (14.5 oz)

    Did you notice an error on this page? If so, please get in touch, so that we can correct the information.

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