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Nikon D300S vs Sony A7S

The Nikon D300S and the Sony Alpha A7S are two digital cameras that were announced, respectively, in July 2009 and April 2014. The D300S is a DSLR, while the A7S is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D300S) and a full frame (A7S) sensor. The Nikon has a resolution of 12.2 megapixels, whereas the Sony provides 12 MP.

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

Headline Specifications
Nikon D300S
versus
Sony A7S
Nikon D300S   Sony A7S
Digital single lens reflex Mirrorless system camera
Nikon F mount lenses Sony E mount lenses
12.2 MP – APS-C sensor 12 MP – Full Frame sensor
720/24p Video 1080/60p Video
ISO 200-3,200 (100 - 6,400) ISO 100-102,400 (50 - 409,600)
Optical viewfinder Electronic viewfinder (2400k dots)
3.0" LCD – 920k dots 3.0" LCD – 921k dots
Fixed screen (not touch-sensitive) Tilting screen (no touchscreen)
7 shutter flaps per second 5 shutter flaps per second
Weathersealed bodyWeathersealed body
950 shots per battery charge380 shots per battery charge
147 x 115 x 81 mm, 938 g 127 x 94 x 48 mm, 489 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D300S and the Sony Alpha A7S? 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 D300S and the Sony A7S is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter.

Size Nikon D300S vs Sony A7S
Compare D300S versus A7S top
Comparison D300S or A7S rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7S is notably smaller (29 percent) than the Nikon D300S. Moreover, the A7S is substantially lighter (48 percent) than the D300S. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

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 Nikon Lens Catalog (D300S) and the Sony FE Lens Catalog (A7S). Mirrorless cameras, such as the A7S, 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 D300S gets 950 shots out of its EN-EL3e battery, while the A7S can take 380 images on a single charge of its NP-FW50 power pack. The power pack in the A7S 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. 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.
 
Nikon D300S 147 mm 115 mm 81 mm 938 g 950 Y Jul 2009 1,799ebay.com
2.
 
Sony A7S 127 mm 94 mm 48 mm 489 g 380 Y Apr 2014 2,499ebay.com
3.
 
Canon 7D 148 mm 111 mm 74 mm 860 g 800 Y Sep 2009 1,699ebay.com
4.
 
Nikon D500 147 mm 115 mm 81 mm 860 g 1240 Y Jan 2016 1,999 amazon.com
5.
 
Nikon D750 141 mm 113 mm 78 mm 750 g 1230 Y Sep 2014 2,299ebay.com
6.
 
Nikon D7000 132 mm 105 mm 77 mm 780 g 1050 Y Sep 2010 1,499ebay.com
7.
 
Nikon D3100 124 mm 96 mm 75 mm 505 g 550 n Aug 2010 599ebay.com
8.
 
Nikon D3S 160 mm 157 mm 88 mm 1240 g 4200 Y Oct 2009 5,199ebay.com
9.
 
Nikon D3000 126 mm 97 mm 64 mm 536 g 500 n Jul 2009 599ebay.com
10.
 
Nikon D90 132 mm 103 mm 77 mm 703 g 850 n Aug 2008 1,299ebay.com
11.
 
Nikon D700 147 mm 123 mm 77 mm 1074 g 1000 Y Jul 2008 2,999ebay.com
12.
 
Nikon D300 147 mm 114 mm 74 mm 925 g 1000 Y Aug 2007 1,799ebay.com
13.
 
Nikon D200 147 mm 113 mm 74 mm 920 g 400 Y Nov 2005 1,699ebay.com
14.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999ebay.com
15.
 
Sony A7 127 mm 94 mm 48 mm 474 g 340 Y Oct 2013 1,699ebay.com
16.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299ebay.com
17.
 
Sony RX1R 113 mm 65 mm 70 mm 482 g 270 n Jun 2013 2,799ebay.com
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 D300S was launched at a markedly lower price (by 28 percent) than the A7S, 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 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Nikon D300S features an APS-C sensor and the Sony A7S a full frame sensor. The sensor area in the A7S is 129 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Nikon D300S and Sony A7S sensor measures

Despite having a smaller sensor, the Nikon D300S offers a higher resolution of 12.2 megapixels, compared with 12 MP of the Sony A7S. 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 5.53μm versus 8.45μm for the A7S). Moreover, it should be noted that the A7S is much more recent (by 4 years and 8 months) than the D300S, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.

The Nikon D300S has a native sensitivity range from ISO 200 to ISO 3200, which can be extended to ISO 100-6400. The corresponding ISO settings for the Sony Alpha A7S are ISO 100 to ISO 102400, with the possibility to increase the ISO range to 50-409600.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

D300S versus A7S 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 consideration, the A7S offers substantially better image quality than the D300S (overall score 17 points higher). The advantage is based on 1.4 bits higher color depth, 1 EV in additional dynamic range, and 2.2 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 D300S APS-C 12.2 4288 2848720/24p22.512.278770
2.
 
Sony A7S Full Frame 12.0 4240 28321080/60p23.913.2370287
3.
 
Canon 7D APS-C 17.9 5184 34561080/30p22.011.785466
4.
 
Nikon D500 APS-C 20.7 5568 37124K/30p24.014.0132483
5.
 
Nikon D750 Full Frame 24.2 6016 40161080/60p24.814.5295693
6.
 
Nikon D7000 APS-C 16.1 4928 32641080/24p23.513.9116780
7.
 
Nikon D3100 APS-C 14.2 4608 30721080/24p22.511.391967
8.
 
Nikon D3S Full Frame 12.1 4256 2832720/24p23.512.0325382
9.
 
Nikon D3000 APS-C 10.0 3872 2592none22.311.156362
10.
 
Nikon D90 APS-C 12.2 4288 2848720/24p22.712.597773
11.
 
Nikon D700 Full Frame 12.1 4256 2832none23.512.2230380
12.
 
Nikon D300 APS-C 12.2 4288 2848none22.112.067967
13.
 
Nikon D200 APS-C 10.0 3872 2592none22.311.558364
14.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385
15.
 
Sony A7 Full Frame 24.0 6000 40001080/60p24.814.2224890
16.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
17.
 
Sony RX1R Full Frame 24.0 6000 40001080/60p25.013.6253791

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the A7S provides a better video resolution than the D300S. It can shoot movie footage at 1080/60p, while the Nikon is limited to 720/24p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the A7S has an electronic viewfinder (2400k dots), while the D300S 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 viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the A7S has a higher magnification than the one of the D300S (0.71x vs 0.63x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Nikon D300S and Sony A7S in connection with corresponding information for a sample of similar 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)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Nikon D300Soptical Y3.0 / 920 fixed n 1/8000s 7.0/s Y n
2.
 
Sony A7S2400 n3.0 / 921 tilting n 1/8000s 5.0/s n n
3.
 
Canon 7Doptical Y3.0 / 920 fixed n 1/8000s 8.0/s Y n
4.
 
Nikon D500optical Y3.2 / 2359 tilting Y 1/8000s 10.0/s n n
5.
 
Nikon D750optical Y3.2 / 1229 tilting n 1/4000s 6.0/s Y n
6.
 
Nikon D7000optical Y3.0 / 921 fixed n 1/8000s 6.0/s Y n
7.
 
Nikon D3100optical n3.0 / 230 fixed n 1/4000s 3.0/s Y n
8.
 
Nikon D3Soptical Y3.0 / 921 fixed n 1/8000s 11.0/s n n
9.
 
Nikon D3000optical n3.0 / 230 fixed n 1/4000s 3.0/s Y n
10.
 
Nikon D90optical Y3.0 / 920 fixed n 1/4000s 4.5/s Y n
11.
 
Nikon D700optical Y3.0 / 922 fixed n 1/8000s 8.0/s Y n
12.
 
Nikon D300optical Y3.0 / 922 fixed n 1/8000s 6.0/s Y n
13.
 
Nikon D200optical Y2.5 / 230 fixed n 1/8000s 5.0/s Y n
14.
 
Sony A7S II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
15.
 
Sony A72400 n3.0 / 1230 tilting n 1/8000s 5.0/s n n
16.
 
Sony A7R2400 n3.0 / 1230 tilting n 1/8000s 4.0/s n n
17.
 
Sony RX1Roptional n3.0 / 1229 fixed n 1/4000s 5.0/s Y n
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 D300S has one, while the A7S does not. While the built-in flash of the D300S 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 A7S 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 Nikon D300S 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 D300S writes its imaging data to Compact Flash or SDXC cards, while the A7S uses SDXC or Memory Stick PRO Duo cards. The D300S features dual card slots, which can be very useful in case a memory card fails. In contrast, the A7S only has one slot. The A7S supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the D300S 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 Nikon D300S and Sony Alpha A7S 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.
 
Nikon D300SYstereo / monoY-mini2.0---
2.
 
Sony A7SYstereo / monoYYmicro2.0YY-
3.
 
Canon 7DYmono / -Y-mini2.0---
4.
 
Nikon D500Ystereo / monoYYmini3.0YYY
5.
 
Nikon D750Ystereo / monoYYmini2.0Y--
6.
 
Nikon D7000Ymono / monoY-mini2.0---
7.
 
Nikon D3100Ymono / mono--mini2.0---
8.
 
Nikon D3SYstereo / ---mini2.0---
9.
 
Nikon D3000Y- / ----2.0---
10.
 
Nikon D90Ymono / mono--mini2.0---
11.
 
Nikon D700Y- / ---mini2.0---
12.
 
Nikon D300Y- / ---mini2.0---
13.
 
Nikon D200Y- / ----2.0---
14.
 
Sony A7S IIYstereo / monoYYmicro2.0YY-
15.
 
Sony A7Ystereo / monoYYmicro2.0YY-
16.
 
Sony A7RYstereo / monoYYmicro2.0YY-
17.
 
Sony RX1RYstereo / monoY-mini2.0---

It is notable that the A7S offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the D300S does not provide wifi capability.

Studio photographers will appreciate that the Nikon D300S (unlike the A7S) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the D300S and the A7S have been discontinued, but can regularly be found used on ebay. The D300S was replaced by the Nikon D500, while the A7S was followed by the Sony A7S II. 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.

Review summary

So what conclusions can be drawn? Is the Nikon D300S better than the Sony A7S or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Advantages of the Nikon D300S:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Faster burst: Shoots at higher frequency (7 vs 5 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 (950 versus 380) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • 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 affordable: Was introduced into a lower priced category (28 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in July 2009).

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Reasons to prefer the Sony Alpha A7S:

  • Better image quality: Scores substantially higher (17 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (1.4 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (1 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (2.2 stops ISO advantage).
  • Better video: Provides higher definition movie capture (1080/60p vs 720/24p).
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.71x vs 0.63x).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (127x94mm vs 147x115mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 449g or 48 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.
  • 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.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More modern: Reflects 4 years and 8 months of technical progress since the D300S launch.

If the count of relative strengths (bullet points above) is taken as a measure, the A7S is the clear winner of the contest (18 : 10 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.

D300S 10:18 A7S

How about other alternatives? Do the specifications of the Nikon D300S and the Sony A7S 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 D300S or the A7S. 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 expert reviews 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
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D300S5/5+ +..82/1004/54.5/5 Jul 2009 1,799ebay.com
2.
 
Sony A7S4/5....86/1004.5/55/5 Apr 2014 2,499ebay.com
3.
 
Canon 7D5/5+ +..84/1004.5/54.5/5 Sep 2009 1,699ebay.com
4.
 
Nikon D5005/5+ +4.7/591/1004.5/55/5 Jan 2016 1,999 amazon.com
5.
 
Nikon D7505/5+ +4/590/1004.5/54.5/5 Sep 2014 2,299ebay.com
6.
 
Nikon D70004/5....80/1004.5/54.5/5 Sep 2010 1,499ebay.com
7.
 
Nikon D31005/5+ +..72/1004.5/54.5/5 Aug 2010 599ebay.com
8.
 
Nikon D3S5/5....89/1004.5/55/5 Oct 2009 5,199ebay.com
9.
 
Nikon D3000..+..72/1004/54.5/5 Jul 2009 599ebay.com
10.
 
Nikon D90..+ +..+ +4/54.5/5 Aug 2008 1,299ebay.com
11.
 
Nikon D700..89/100..+ +4.5/54.5/5 Jul 2008 2,999ebay.com
12.
 
Nikon D300..+ +..+ +5/54.5/5 Aug 2007 1,799ebay.com
13.
 
Nikon D200..+ +..+ +o.. Nov 2005 1,699ebay.com
14.
 
Sony A7S II5/5+....4.5/55/5 Sep 2015 2,999ebay.com
15.
 
Sony A75/5+ +..80/1005/55/5 Oct 2013 1,699ebay.com
16.
 
Sony A7R5/5+ +..82/1004.5/55/5 Oct 2013 2,299ebay.com
17.
 
Sony RX1R5/5......4/54.5/5 Jun 2013 2,799ebay.com
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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

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Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Nikon D300S vs Sony A7S

    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 D300S Sony A7S
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Nikon F mount lenses Sony E mount lenses
    Launch Date July 2009 April 2014
    Launch Price USD 1,799 USD 2,499
    Sensor Specs Nikon D300S Sony A7S
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 23.6 x 15.8 mm 35.8 x 23.9 mm
    Sensor Area 372.88 mm2 855.62 mm2
    Sensor Diagonal 28.4 mm 43 mm
    Crop Factor 1.5x 1.0x
    Sensor Resolution 12.2 Megapixels 12 Megapixels
    Image Resolution 4288 x 2848 pixels 4240 x 2832 pixels
    Pixel Pitch 5.53 μm 8.45 μm
    Pixel Density 3.28 MP/cm2 1.40 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 720/24p Video 1080/60p Video
    ISO Setting 200 - 3,200 ISO 100 - 102,400 ISO
    ISO Boost 100 - 6,400 ISO 50 - 409,600 ISO
    Image Processor EXPEED BIONZ X
    DXO Sensor Quality (score) 70 87
    DXO Color Depth (bits) 22.5 23.9
    DXO Dynamic Range (EV) 12.2 13.2
    DXO Low Light (ISO) 787 3702
    Screen Specs Nikon D300S Sony A7S
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.63x 0.71x
    Viewfinder Resolution 2400k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 920k dots 921k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Nikon D300S Sony A7S
    Focus System Phase-detect AF Contrast-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/8000s
    Continuous Shooting 7 shutter flaps/s 5 shutter flaps/s
    Electronic Shutterno E-ShutterYES
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium CF or SDXC cards MS or SDXC cards
    Second Storage Option Dual card slots Single card slot
    UHS card support no UHS-I
    Connectivity Specs Nikon D300S Sony A7S
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Body Specs Nikon D300S Sony A7S
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type EN-EL3e NP-FW50
    Battery Life (CIPA)950 shots per charge380 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 147 x 115 x 81 mm
    (5.8 x 4.5 x 3.2 in)
    127 x 94 x 48 mm
    (5.0 x 3.7 x 1.9 in)
    Camera Weight 938 g (33.1 oz) 489 g (17.2 oz)
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