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Nikon D850 vs D40X

The Nikon D850 and the Nikon D40X are two digital cameras that were officially introduced, respectively, in July 2017 and March 2007. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a full frame (D850) and an APS-C (D40X) sensor. The D850 has a resolution of 45.4 megapixels, whereas the D40X provides 10 MP.

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

Headline Specifications
Nikon D850
versus
Nikon D40X
Nikon D850   Nikon D40X
Digital single lens reflex Digital single lens reflex
Nikon F mount lenses Nikon F mount lenses
45.4 MP – Full Frame sensor 10 MP – APS-C sensor
4K/30p Video no Video
ISO 64-25,600 (32 - 102,400) ISO 100-1,600 (100 - 3,200)
Optical viewfinder Optical viewfinder
3.2" LCD – 2359k dots 2.5" LCD – 230k dots
Tilting touchscreen Fixed screen (not touch-sensitive)
9 shutter flaps per second 3 shutter flaps per second
Weathersealed bodynot weather sealed
1840 shots per battery charge520 shots per battery charge
146 x 124 x 79 mm, 1005 g 124 x 94 x 64 mm, 522 g
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Check D850 price at
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Check D40X offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D850 and the Nikon D40X? 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.

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Body comparison

The side-by-side display below illustrates the physical size and weight of the Nikon D850 and the Nikon D40X. 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 dimensions are rounded to the nearest millimeter.

The D40X can be obtained in two different colors (black, silver), while the D850 is only available in black.

Size Nikon D850 vs Nikon D40X
Compare D850 versus D40X top
Comparison D850 or D40X rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon D40X is considerably smaller (36 percent) than the Nikon D850. Moreover, the D40X is substantially lighter (48 percent) than the D850. It is worth mentioning in this context that the D850 is splash and dust resistant, while the D40X 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 (as in the D850) will tend to go along with bigger and heavier lenses, while more compact options are available for the smaller-sensor camera (D40X). You can compare the optics available in the Nikon Lens Catalog.

Concerning battery life, the D850 gets 1840 shots out of its Nikon EN-EL15a battery, while the D40X can take 520 images on a single charge of its Nikon EN-EL9 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D850 146 mm 124 mm 79 mm 1005 g 1840 Y Jul 2017 3,299 amazon.com
2.
 
Nikon D40X 124 mm 94 mm 64 mm 522 g 520 n Mar 2007 729ebay.com
3.
 
Canon 5DS 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699ebay.com
4.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699ebay.com
5.
 
Nikon D5 160 mm 159 mm 92 mm 1415 g 3780 Y Jan 2016 6,499ebay.com
6.
 
Nikon D810 146 mm 123 mm 82 mm 980 g 1200 Y Jun 2014 3,299ebay.com
7.
 
Nikon Df 144 mm 110 mm 67 mm 760 g 1400 Y Nov 2013 2,749ebay.com
8.
 
Nikon D610 141 mm 113 mm 82 mm 850 g 900 Y Oct 2013 1,999ebay.com
9.
 
Nikon D600 141 mm 113 mm 82 mm 850 g 900 Y Sep 2012 2,099ebay.com
10.
 
Nikon D800 146 mm 123 mm 82 mm 1000 g 900 Y Feb 2012 2,999ebay.com
11.
 
Nikon D800E 146 mm 123 mm 82 mm 1000 g 900 Y Feb 2012 3,299ebay.com
12.
 
Nikon D3000 126 mm 97 mm 64 mm 536 g 500 n Jul 2009 599ebay.com
13.
 
Nikon D5000 127 mm 104 mm 80 mm 590 g 510 n Apr 2009 749ebay.com
14.
 
Nikon D60 126 mm 94 mm 64 mm 522 g 500 n Jan 2008 629ebay.com
15.
 
Nikon D40 124 mm 94 mm 64 mm 522 g 470 n Nov 2006 499ebay.com
16.
 
Nikon D80 132 mm 103 mm 77 mm 668 g 600 n Aug 2006 999ebay.com
17.
 
Sony A99 II 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 3,199ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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The price is, of course, an important factor in any camera decision. 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 D40X was launched at a markedly lower price (by 78 percent) than the D850, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The size of the imaging sensor is a crucial determinant 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Nikon D850 features a full frame sensor and the Nikon D40X an APS-C sensor. The sensor area in the D40X is 57 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

In terms of chip-set technology, the D850 uses a more advanced image processing engine (EXPEED 5) than the D40X (EXPEED), with benefits for noise reduction, color accuracy, and processing speed.

Nikon D850 and Nikon D40X sensor measures

With 45.4MP, the D850 offers a higher resolution than the D40X (10MP), but the D850 has smaller individual pixels (pixel pitch of 4.35μm versus 6.11μm for the D40X). However, the D850 is a much more recent model (by 10 years and 4 months) than the D40X, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the D850 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Nikon D850 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D850 for good quality output (200 dots per inch) amounts to 41.3 x 27.5 inches or 104.9 x 69.9 cm, for very good quality (250 dpi) 33 x 22 inches or 83.9 x 55.9 cm, and for excellent quality (300 dpi) 27.5 x 18.3 inches or 69.9 x 46.6 cm. The corresponding values for the Nikon D40X are 19.4 x 13 inches or 49.2 x 32.9 cm for good quality, 15.5 x 10.4 inches or 39.3 x 26.3 cm for very good quality, and 12.9 x 8.6 inches or 32.8 x 21.9 cm for excellent quality prints.

The Nikon D850 has a native sensitivity range from ISO 64 to ISO 25600, which can be extended to ISO 32-102400. The corresponding ISO settings for the Nikon D40X are ISO 100 to ISO 1600, with the possibility to increase the ISO range to 100-3200.

In terms of underlying technology, the D850 is build around a BSI-CMOS sensor, while the D40X uses a CCD imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

D850 versus D40X MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). Of the two cameras under review, the D850 provides substantially higher image quality than the D40X, with an overall score that is 37 points higher. This advantage is based on 4 bits higher color depth, 3.4 EV in additional dynamic range, and 2.4 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
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Nikon D850 Full Frame 45.4 8256 55044K/30p26.414.82660100
2.
 
Nikon D40X APS-C 10.0 3872 2592none22.411.451663
3.
 
Canon 5DS Full Frame 50.3 8688 57921080/30p24.712.4238187
4.
 
Canon 5DS R Full Frame 50.3 8688 57921080/30p24.612.4230886
5.
 
Nikon D5 Full Frame 20.7 5588 37124K/30p25.112.3234388
6.
 
Nikon D810 Full Frame 36.2 7360 49121080/60p25.714.8285397
7.
 
Nikon Df Full Frame 16.2 4928 3280none24.613.1327989
8.
 
Nikon D610 Full Frame 24.2 6016 40161080/30p25.114.4292594
9.
 
Nikon D600 Full Frame 24.2 6016 40161080/30p25.114.2298094
10.
 
Nikon D800 Full Frame 36.2 7360 49121080/30p25.314.4285395
11.
 
Nikon D800E Full Frame 36.2 7360 49121080/30p25.614.3297996
12.
 
Nikon D3000 APS-C 10.0 3872 2592none22.311.156362
13.
 
Nikon D5000 APS-C 12.2 4288 2848720/24p22.712.586872
14.
 
Nikon D60 APS-C 10.0 3872 2592none22.511.456265
15.
 
Nikon D40 APS-C 6.0 3008 2000none21.011.056156
16.
 
Nikon D80 APS-C 10.0 3872 2592none22.111.252461
17.
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792
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Many modern cameras cannot only take still pictures, but also record videos. The D850 indeed provides movie recording capabilities, while the D40X does not. The highest resolution format that the D850 can use is 4K/30p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The D850 and the D40X 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 D850 offers a wider field of view (100%) than the one in the D40X (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the D850 has a higher magnification (0.75x vs 0.53x), 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 Nikon D850, the Nikon D40X, and comparable cameras.

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Core Features
# image 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.
 
Nikon D850optical Y3.2 / 2359 tilting Y 1/8000s 9.0/s n n
2.
 
Nikon D40Xoptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
3.
 
Canon 5DSoptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
4.
 
Canon 5DS Roptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
5.
 
Nikon D5optical Y3.2 / 2359 fixed Y 1/8000s 14.0/s n n
6.
 
Nikon D810optical Y3.2 / 1229 fixed n 1/8000s 5.0/s Y n
7.
 
Nikon Dfoptical Y3.2 / 921 fixed n 1/4000s 5.5/s n n
8.
 
Nikon D610optical Y3.2 / 921 fixed n 1/4000s 6.0/s Y n
9.
 
Nikon D600optical Y3.0 / 921 fixed n 1/4000s 5.5/s Y n
10.
 
Nikon D800optical Y3.2 / 921 fixed n 1/8000s 4.0/s Y n
11.
 
Nikon D800Eoptical Y3.2 / 921 fixed n 1/8000s 4.0/s Y n
12.
 
Nikon D3000optical n3.0 / 230 fixed n 1/4000s 3.0/s Y n
13.
 
Nikon D5000optical n2.7 / 230 full-flex n 1/4000s 4.0/s Y n
14.
 
Nikon D60optical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
15.
 
Nikon D40optical n2.5 / 230 fixed n 1/4000s 2.5/s Y n
16.
 
Nikon D80optical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
17.
 
Sony A99 II2400 Y3.0 / 1229 full-flex n 1/8000s 12.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One feature that is present on the D850, but is missing on the D40X is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The Nikon D850 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 D850 writes its imaging data to SDXC or XQD cards, while the D40X uses SDHC cards. The D850 features dual card slots, which can be very useful in case a memory card fails. In contrast, the D40X only has one slot. The D850 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the D40X cannot take advantage of Ultra High Speed SD 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 D850 and Nikon D40X and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Nikon D850Ystereo / monoYYmini3.0YYY
2.
 
Nikon D40XY- / ----2.0---
3.
 
Canon 5DSYmono / monoY-mini3.0---
4.
 
Canon 5DS RYmono / monoY-mini3.0---
5.
 
Nikon D5Ystereo / monoYYmini3.0---
6.
 
Nikon D810Ystereo / monoYYmini3.0Y--
7.
 
Nikon DfY- / ---mini2.0---
8.
 
Nikon D610Ymono / monoYYmini2.0---
9.
 
Nikon D600Ymono / monoYYmini2.0---
10.
 
Nikon D800Ymono / monoYYmini3.0---
11.
 
Nikon D800EYmono / monoYYmini3.0---
12.
 
Nikon D3000Y- / ----2.0---
13.
 
Nikon D5000Ymono / mono--mini2.0---
14.
 
Nikon D60Y- / ----2.0---
15.
 
Nikon D40Y- / ----2.0---
16.
 
Nikon D80Y- / ----2.0---
17.
 
Sony A99 IIYstereo / monoYYmicro2.0YYY
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It is notable that the D850 offers wifi support, while the D40X does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Studio photographers will appreciate that the Nikon D850 (unlike the D40X) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The D850 is a recent model that features in the current product line-up of Nikon. In contrast, the D40X has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the D40X was succeeded by the Nikon D60 . Further information on the features and operation of the D850 and D40X can be found, respectively, in the Nikon D850 Manual (free pdf) or the online Nikon D40X Manual.

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Review summary

So what conclusions can be drawn? Is the Nikon D850 better than the Nikon D40X or vice versa? The listing below highlights the relative strengths of the two models.


Arguments in favor of the Nikon D850:

  • More detail: Offers more megapixels (45.4 vs 10MP) with a 113% higher linear resolution.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (37 points) in the DXO overall assessment.
  • Richer colors: Generates images with noticeably better colors (4 bits more color depth).
  • More dynamic range: Captures a larger spectrum of light and dark details (3.4 EV of extra DR).
  • Better low-light sensitivity: Requires less light for good images (2.4 stops ISO advantage).
  • Better jpgs: Has a more modern image processing engine (EXPEED 5 vs EXPEED).
  • Broader imaging potential: Can record not only still images but also 4K/30p movies.
  • 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 (0.75x vs 0.53x).
  • Easier setting verification: Features an LCD display on top to control 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 (2359k vs 230k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (9 vs 3 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Can take more shots (1840 versus 520) on a single battery charge.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • 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: Supports Ultra High Speed (UHS-II) SDXC cards.
  • More modern: Reflects 10 years and 4 months of technical progress since the D40X launch.


Reasons to prefer the Nikon D40X:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • More compact: Is smaller (124x94mm vs 146x124mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 483g or 48 percent) and is thus easier to take along.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • More affordable: Was introduced into a lower priced category (78 percent cheaper at launch).
  • More heavily discounted: Has been around for much longer (launched in March 2007).

If the number of relative strengths (bullet points above) is taken as a guide, the D850 is the clear winner of the match-up (28 : 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 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.

D850 28:06 D40X

How about other alternatives? Do the specifications of the Nikon D850 and the Nikon D40X 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 incomplete and does no justice, for example, to the way the D850 or the D40X 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 why hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular 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
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D8504.5/5+ +5/589/1004.5/55/5 Jul 2017 3,299 amazon.com
2.
 
Nikon D40X..79/100..+ +4/54/5 Mar 2007 729ebay.com
3.
 
Canon 5DS..+..83/1004.5/54.5/5 Feb 2015 3,699ebay.com
4.
 
Canon 5DS R5/5+..83/1005/54.5/5 Feb 2015 3,699ebay.com
5.
 
Nikon D5....4/589/1004.5/55/5 Jan 2016 6,499ebay.com
6.
 
Nikon D8105/5..5/586/1005/54.5/5 Jun 2014 3,299ebay.com
7.
 
Nikon Df4/5....81/1004/54/5 Nov 2013 2,749ebay.com
8.
 
Nikon D6104/5+ +..87/1004.5/54.5/5 Oct 2013 1,999ebay.com
9.
 
Nikon D6004/5+ +..87/1005/54.5/5 Sep 2012 2,099ebay.com
10.
 
Nikon D8005/5+ +..82/1005/55/5 Feb 2012 2,999ebay.com
11.
 
Nikon D800E......84/1005/55/5 Feb 2012 3,299ebay.com
12.
 
Nikon D3000..+..72/1004/54.5/5 Jul 2009 599ebay.com
13.
 
Nikon D5000..+ +..75/1004/54.5/5 Apr 2009 749ebay.com
14.
 
Nikon D60..80/100..+ +4/54.5/5 Jan 2008 629ebay.com
15.
 
Nikon D40..81/100..+ +o4.5/5 Nov 2006 499ebay.com
16.
 
Nikon D80..+..+ +o4.5/5 Aug 2006 999ebay.com
17.
 
Sony A99 II....4.5/585/1004.5/54.5/5 Sep 2016 3,199ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

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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. 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: Nikon D850 vs Nikon D40X

    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 D850 Nikon D40X
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Nikon F mount lenses Nikon F mount lenses
    Launch Date July 2017 March 2007
    Launch Price USD 3,299 USD 729
    Sensor Specs Nikon D850 Nikon D40X
    Sensor Technology BSI-CMOS CCD
    Sensor Format Full Frame Sensor APS-C Sensor
    Sensor Size 35.9 x 23.9 mm 23.6 x 15.8 mm
    Sensor Area 858.01 mm2 372.88 mm2
    Sensor Diagonal 43.1 mm 28.4 mm
    Crop Factor 1.0x 1.5x
    Sensor Resolution 45.4 Megapixels 10 Megapixels
    Image Resolution 8256 x 5504 pixels 3872 x 2592 pixels
    Pixel Pitch 4.35 μm 6.11 μm
    Pixel Density 5.30 MP/cm2 2.69 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 4K/30p Video no Video
    ISO Setting 64 - 25,600 ISO 100 - 1,600 ISO
    ISO Boost 32 - 102,400 ISO 100 - 3,200 ISO
    Image Processor EXPEED 5 EXPEED
    DXO Sensor Quality (score) 100 63
    DXO Color Depth (bits) 26.4 22.4
    DXO Dynamic Range (EV) 14.8 11.4
    DXO Low Light (ISO) 2660 516
    Screen Specs Nikon D850 Nikon D40X
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 100% 95%
    Viewfinder Magnification 0.75x 0.53x
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View
    Rear LCD Size 3.2inch 2.5inch
    LCD Resolution 2359k dots 230k dots
    LCD Attachment Tilting screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Nikon D850 Nikon D40X
    Focus System Phase-detect AF Phase-detect AF
    Continuous Shooting 9 shutter flaps/s 3 shutter flaps/s
    Shutter Life Expectancy200 000 actuations50 000 actuations
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Fill Flash no On-Board Flash Built-in Flash
    Storage Medium SDXC or XQD cards SDHC cards
    Single or Dual Card Slots Dual card slots Single card slot
    UHS card support UHS-II no
    Connectivity Specs Nikon D850 Nikon D40X
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.0 USB 2.0
    HDMI Port mini HDMI no HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in no Wifi
    Near-Field Communication NFC built-in no NFC
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Nikon D850 Nikon D40X
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type Nikon EN-EL15a Nikon EN-EL9
    Battery Life (CIPA)1840 shots per charge520 shots per charge
    Body Dimensions 146 x 124 x 79 mm
    (5.7 x 4.9 x 3.1 in)
    124 x 94 x 64 mm
    (4.9 x 3.7 x 2.5 in)
    Camera Weight 1005 g (35.5 oz) 522 g (18.4 oz)
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    Check D850 price at
    amazon.com
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    Check D40X offers at
    ebay.com

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