Nikon D300S vs Sony A9 III
The Nikon D300S and the Sony Alpha A9 III are two digital cameras that were revealed to the public, respectively, in July 2009 and November 2023. The D300S is a DSLR, while the A9 III is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D300S) and a full frame (A9 III) sensor. The Nikon has a resolution of 12.2 megapixels, whereas the Sony provides 24 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Check D300S offers at
ebay.com

Check A9 III price at
amazon.com
Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D300S and the Sony Alpha A9 III? 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 A9 III 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 dimensions are rounded to the nearest millimeter.



If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A9 III is notably smaller (22 percent) than the Nikon D300S. Moreover, the A9 III is markedly lighter (25 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 (A9 III). Mirrorless cameras, such as the A9 III, 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 Nikon EN-EL3e battery, while the A9 III can take 530 images on a single charge of its Sony NP-FZ100 power pack. The power pack in the A9 III can be charged via the USB port, which can be very convenient when travelling.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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.

| Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Nikon D300S | 147 mm | 115 mm | 81 mm | 938 g | 950 | Y | Jul 2009 | US$ 1 799 | ebay.com | |
| 2. | Sony A9 III | 136 mm | 97 mm | 83 mm | 702 g | 530 | Y | Nov 2023 | US$ 5 999 | amazon.com | |
| 3. | Canon 7D | 148 mm | 111 mm | 74 mm | 860 g | 800 | Y | Sep 2009 | US$ 1 699 | ebay.com | |
| 4. | Nikon D3S | 160 mm | 157 mm | 88 mm | 1240 g | 4200 | Y | Oct 2009 | US$ 5 199 | ebay.com | |
| 5. | Nikon D90 | 132 mm | 103 mm | 77 mm | 703 g | 850 | n | Aug 2008 | US$ 1 299 | ebay.com | |
| 6. | Nikon D200 | 147 mm | 113 mm | 74 mm | 920 g | 400 | Y | Nov 2005 | US$ 1 699 | ebay.com | |
| 7. | Nikon D300 | 147 mm | 114 mm | 74 mm | 925 g | 1000 | Y | Aug 2007 | US$ 1 799 | ebay.com | |
| 8. | Nikon D500 | 147 mm | 115 mm | 81 mm | 860 g | 1240 | Y | Jan 2016 | US$ 1 999 | ebay.com | |
| 9. | Nikon D700 | 147 mm | 123 mm | 77 mm | 1074 g | 1000 | Y | Jul 2008 | US$ 2 999 | ebay.com | |
| 10. | Nikon D3000 | 126 mm | 97 mm | 64 mm | 536 g | 500 | n | Jul 2009 | US$ 599 | ebay.com | |
| 11. | Nikon D3100 | 124 mm | 96 mm | 75 mm | 505 g | 550 | n | Aug 2010 | US$ 599 | ebay.com | |
| 12. | Nikon D7000 | 132 mm | 105 mm | 77 mm | 780 g | 1050 | Y | Sep 2010 | US$ 1 499 | ebay.com | |
| 13. | Sony A1 II | 136 mm | 97 mm | 83 mm | 743 g | 520 | Y | Nov 2024 | US$ 6 499 | amazon.com | |
| 14. | Sony A7 II | 127 mm | 96 mm | 60 mm | 599 g | 350 | Y | Nov 2014 | US$ 1 999 | ebay.com | |
| 15. | Sony A7 III | 127 mm | 96 mm | 74 mm | 650 g | 610 | Y | Feb 2018 | US$ 1 999 | amazon.com | |
| 16. | Sony A9 | 127 mm | 96 mm | 63 mm | 673 g | 650 | Y | Apr 2017 | US$ 4 499 | ebay.com | |
| 17. | Sony A9 II | 129 mm | 96 mm | 76 mm | 678 g | 690 | Y | Oct 2019 | US$ 4 499 | amazon.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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The D300S was launched at a markedly lower price (by 70 percent) than the A9 III, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.
Sensor comparison
The 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.
Of the two cameras under consideration, the Nikon D300S features an APS-C sensor and the Sony A9 III a full frame sensor. The sensor area in the A9 III is 127 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.

With 24MP, the A9 III offers a higher resolution than the D300S (12.2MP), but the A9 III nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 5.53μm for the D300S) due to its larger sensor. Moreover, the A9 III is a much more recent model (by 14 years and 3 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 resolution advantage of the Sony A9 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A9 III for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Nikon D300S are 21.4 x 14.2 inches or 54.5 x 36.2 cm for good quality, 17.2 x 11.4 inches or 43.6 x 28.9 cm for very good quality, and 14.3 x 9.5 inches or 36.3 x 24.1 cm for excellent quality prints.
The A9 III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
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 A9 III are ISO 250 to ISO 25600, with the possibility to increase the ISO range to 125-51200.
In terms of underlying technology, the D300S is build around a CMOS sensor, while the A9 III uses a Stacked CMOS 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.

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"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

| 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 | 2848 | 720/24p | 22.5 | 12.2 | 787 | 70 | |
| 2. | Sony A9 III | Full Frame | 24.0 | 6000 | 4000 | 4K/120p | 25.4 | 14.7 | 3243 | 96 | |
| 3. | Canon 7D | APS-C | 17.9 | 5184 | 3456 | 1080/30p | 22.0 | 11.7 | 854 | 66 | |
| 4. | Nikon D3S | Full Frame | 12.1 | 4256 | 2832 | 720/24p | 23.5 | 12.0 | 3253 | 82 | |
| 5. | Nikon D90 | APS-C | 12.2 | 4288 | 2848 | 720/24p | 22.7 | 12.5 | 977 | 73 | |
| 6. | Nikon D200 | APS-C | 10.0 | 3872 | 2592 | none | 22.3 | 11.5 | 583 | 64 | |
| 7. | Nikon D300 | APS-C | 12.2 | 4288 | 2848 | none | 22.1 | 12.0 | 679 | 67 | |
| 8. | Nikon D500 | APS-C | 20.7 | 5568 | 3712 | 4K/30p | 24.0 | 14.0 | 1324 | 83 | |
| 9. | Nikon D700 | Full Frame | 12.1 | 4256 | 2832 | none | 23.5 | 12.2 | 2303 | 80 | |
| 10. | Nikon D3000 | APS-C | 10.0 | 3872 | 2592 | none | 22.3 | 11.1 | 563 | 62 | |
| 11. | Nikon D3100 | APS-C | 14.2 | 4608 | 3072 | 1080/24p | 22.5 | 11.3 | 919 | 67 | |
| 12. | Nikon D7000 | APS-C | 16.1 | 4928 | 3264 | 1080/24p | 23.5 | 13.9 | 1167 | 80 | |
| 13. | Sony A1 II | Full Frame | 49.8 | 8640 | 5760 | 8k/30p | 25.4 | 14.8 | 3363 | 97 | |
| 14. | Sony A7 II | Full Frame | 24.0 | 6000 | 4000 | 1080/60p | 24.9 | 13.6 | 2449 | 90 | |
| 15. | Sony A7 III | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3730 | 96 | |
| 16. | Sony A9 | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 24.9 | 13.3 | 3517 | 92 | |
| 17. | Sony A9 II | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.0 | 3434 | 93 | |
| Note: DXO values in italics represent estimates based on sensor size and age. | |||||||||||
Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the A9 III provides a better video resolution than the D300S. It can shoot movie footage at 4K/120p, 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 A9 III has an electronic viewfinder (9440k 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 A9 III has a higher magnification than the one of the D300S (0.9x vs 0.63x), 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 D300S and Sony A9 III along with similar information for a selection of comparators.

| 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 D300S | optical | Y | 3.0 / 920 | fixed | n | 1/8000s | 7.0/s | Y | n | |
| 2. | Sony A9 III | 9440 | n | 3.2 / 2100 | full-flex | Y | 1/80000s | 120.0/s | n | Y | |
| 3. | Canon 7D | optical | Y | 3.0 / 920 | fixed | n | 1/8000s | 8.0/s | Y | n | |
| 4. | Nikon D3S | optical | Y | 3.0 / 921 | fixed | n | 1/8000s | 11.0/s | n | n | |
| 5. | Nikon D90 | optical | Y | 3.0 / 920 | fixed | n | 1/4000s | 4.5/s | Y | n | |
| 6. | Nikon D200 | optical | Y | 2.5 / 230 | fixed | n | 1/8000s | 5.0/s | Y | n | |
| 7. | Nikon D300 | optical | Y | 3.0 / 922 | fixed | n | 1/8000s | 6.0/s | Y | n | |
| 8. | Nikon D500 | optical | Y | 3.2 / 2359 | tilting | Y | 1/8000s | 10.0/s | n | n | |
| 9. | Nikon D700 | optical | Y | 3.0 / 922 | fixed | n | 1/8000s | 8.0/s | Y | n | |
| 10. | Nikon D3000 | optical | n | 3.0 / 230 | fixed | n | 1/4000s | 3.0/s | Y | n | |
| 11. | Nikon D3100 | optical | n | 3.0 / 230 | fixed | n | 1/4000s | 3.0/s | Y | n | |
| 12. | Nikon D7000 | optical | Y | 3.0 / 921 | fixed | n | 1/8000s | 6.0/s | Y | n | |
| 13. | Sony A1 II | 9437 | n | 3.2 / 2100 | full-flex | Y | 1/8000s | 30.0/s | n | Y | |
| 14. | Sony A7 II | 2400 | n | 3.0 / 1230 | tilting | n | 1/8000s | 5.0/s | n | Y | |
| 15. | Sony A7 III | 2359 | n | 3.0 / 922 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
| 16. | Sony A9 | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 20.0/s | n | Y | |
| 17. | Sony A9 II | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 20.0/s | n | Y | |
| Note: *) 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 A9 III 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 A9 III has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the D300S does not have a selfie-screen.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 A9 III 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 and the Sony A9 III both have 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 A9 III uses CFexpress (type A) or SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. The A9 III supports UHS-II cards (Ultra High Speed data transfer of up to 312 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 A9 III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

| Camera Model |
Hotshoe Port |
Internal Mic / Speaker |
Microphone Port |
Headphone Port |
HDMI Port |
USB Port |
WiFi Support |
NFC Support |
Bluetooth Support |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Nikon D300S | Y | stereo / mono | Y | - | mini | 2.0 | - | - | - | |
| 2. | Sony A9 III | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 3. | Canon 7D | Y | mono / - | Y | - | mini | 2.0 | - | - | - | |
| 4. | Nikon D3S | Y | stereo / - | - | - | mini | 2.0 | - | - | - | |
| 5. | Nikon D90 | Y | mono / mono | - | - | mini | 2.0 | - | - | - | |
| 6. | Nikon D200 | Y | - / - | - | - | - | 2.0 | - | - | - | |
| 7. | Nikon D300 | Y | - / - | - | - | mini | 2.0 | - | - | - | |
| 8. | Nikon D500 | Y | stereo / mono | Y | Y | mini | 3.0 | Y | Y | Y | |
| 9. | Nikon D700 | Y | - / - | - | - | mini | 2.0 | - | - | - | |
| 10. | Nikon D3000 | Y | - / - | - | - | - | 2.0 | - | - | - | |
| 11. | Nikon D3100 | Y | mono / mono | - | - | mini | 2.0 | - | - | - | |
| 12. | Nikon D7000 | Y | mono / mono | Y | - | mini | 2.0 | - | - | - | |
| 13. | Sony A1 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 14. | Sony A7 II | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
| 15. | Sony A7 III | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
| 16. | Sony A9 | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | Y | |
| 17. | Sony A9 II | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y |
It is notable that the A9 III 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.
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
The A9 III is a recent model that features in the current product line-up of Sony. In contrast, the D300S has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the D300S was succeeded by the Nikon D500. Further information on the features and operation of the D300S and A9 III can be found, respectively, in the Nikon D300S Manual (free pdf) or the online Sony A9 III Manual.
Review summary
So what is the bottom line? Which of the two cameras – the Nikon D300S or the Sony A9 III – 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.

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.
- Longer lasting: Can take more shots (950 versus 530) on a single battery charge.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More affordable: Was introduced into a lower priced category (70 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in July 2009).

Arguments in favor of the Sony Alpha A9 III:
- More detail: Has more megapixels (24 vs 12.2MP), which boosts linear resolution by 40%.
- Better image quality: Is equipped with a larger and more technologically advanced sensor.
- Richer colors: The sensor size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
- Better video: Provides higher definition movie capture (4K/120p vs 720/24p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- 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 (0.9x vs 0.63x).
- Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (2100k vs 920k dots).
- More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster shutter: Has higher mechanical shutter speed (1/80000s vs 1/8000s) to freeze action.
- Faster burst: Shoots at higher frequency (120 vs 7 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- More compact: Is smaller (136x97mm vs 147x115mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 236g or 25 percent) and is thus easier to take along.
- Easier travel charging: Can be conveniently charged via its USB port.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- Faster data transfer: Supports a more advanced USB protocol (3.2 vs 2.0).
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- Faster buffer clearing: Has an SD card interface that supports the UHS-II standard.
- More modern: Reflects 14 years and 3 months of technical progress since the D300S launch.
If the count of individual advantages (bullet points above) is taken as a guide, the A9 III is the clear winner of the contest (29 : 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 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.
How about other alternatives? Do the specifications of the Nikon D300S and the Sony A9 III 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 technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the D300S or the A9 III 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], 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.

| Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Nikon D300S | 5/5 | + + | .. | 82/100 | 4/5 | 4.5/5 | Jul 2009 | US$ 1 799 | ebay.com | |
| 2. | Sony A9 III | 4.5/5 | .. | .. | 91/100 | .. | .. | Nov 2023 | US$ 5 999 | amazon.com | |
| 3. | Canon 7D | 5/5 | + + | .. | 84/100 | 4.5/5 | 4.5/5 | Sep 2009 | US$ 1 699 | ebay.com | |
| 4. | Nikon D3S | 5/5 | .. | .. | 89/100 | 4.5/5 | 5/5 | Oct 2009 | US$ 5 199 | ebay.com | |
| 5. | Nikon D90 | .. | + + | .. | + + | 4/5 | 4.5/5 | Aug 2008 | US$ 1 299 | ebay.com | |
| 6. | Nikon D200 | .. | + + | .. | + + | o | .. | Nov 2005 | US$ 1 699 | ebay.com | |
| 7. | Nikon D300 | .. | + + | .. | + + | 5/5 | 4.5/5 | Aug 2007 | US$ 1 799 | ebay.com | |
| 8. | Nikon D500 | 5/5 | + + | 4.7/5 | 91/100 | 4.5/5 | 5/5 | Jan 2016 | US$ 1 999 | ebay.com | |
| 9. | Nikon D700 | .. | 89/100 | .. | + + | 4.5/5 | 4.5/5 | Jul 2008 | US$ 2 999 | ebay.com | |
| 10. | Nikon D3000 | .. | + | .. | 72/100 | 4/5 | 4.5/5 | Jul 2009 | US$ 599 | ebay.com | |
| 11. | Nikon D3100 | 5/5 | + + | .. | 72/100 | 4.5/5 | 4.5/5 | Aug 2010 | US$ 599 | ebay.com | |
| 12. | Nikon D7000 | 4/5 | .. | .. | 80/100 | 4.5/5 | 4.5/5 | Sep 2010 | US$ 1 499 | ebay.com | |
| 13. | Sony A1 II | .. | .. | .. | .. | .. | .. | Nov 2024 | US$ 6 499 | amazon.com | |
| 14. | Sony A7 II | 5/5 | + | 4/5 | 82/100 | 4.5/5 | 5/5 | Nov 2014 | US$ 1 999 | ebay.com | |
| 15. | Sony A7 III | .. | + + | 4.5/5 | 89/100 | 5/5 | 5/5 | Feb 2018 | US$ 1 999 | amazon.com | |
| 16. | Sony A9 | 5/5 | + + | 4.8/5 | 89/100 | 5/5 | 5/5 | Apr 2017 | US$ 4 499 | ebay.com | |
| 17. | Sony A9 II | .. | .. | 5/5 | 90/100 | 5/5 | 5/5 | Oct 2019 | US$ 4 499 | amazon.com | |
| Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. | |||||||||||
The review scores listed above should be treated with care, 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. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Check D300S offers at
ebay.com

Check A9 III price at
amazon.com
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.
- Canon R vs Sony A9 III
- Canon RP vs Sony A9 III
- Fujifilm X-T20 vs Sony A9 III
- Leica V-LUX 2 vs Nikon D300S
- Nikon D300S vs Nikon D810
- Nikon D300S vs OM System OM-1
- Nikon D300S vs Olympus E-PM2
- Nikon D300S vs Sony A68
- Nikon D300S vs Sony A850
- Nikon D70 vs Sony A9 III
- Nikon Z30 vs Sony A9 III
- Panasonic TZ95 vs Sony A9 III
Specifications: Nikon D300S vs Sony A9 III
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 Model | Nikon D300S | Sony A9 III |
|---|---|---|
| Camera Type | Digital single lens reflex | Mirrorless system camera |
| Camera Lens | Nikon F mount lenses | Sony E mount lenses |
| Launch Date | July 2009 | November 2023 |
| Launch Price | USD 1,799 | USD 5,999 |
| Sensor Specs | Nikon D300S | Sony A9 III |
| Sensor Technology | CMOS | Stacked CMOS |
| Sensor Format | APS-C Sensor | Full Frame Sensor |
| Sensor Size | 23.6 x 15.8 mm | 35.6 x 23.8 mm |
| Sensor Area | 372.88 mm2 | 847.28 mm2 |
| Sensor Diagonal | 28.4 mm | 42.8 mm |
| Crop Factor | 1.5x | 1.0x |
| Sensor Resolution | 12.2 Megapixels | 24 Megapixels |
| Image Resolution | 4288 x 2848 pixels | 6000 x 4000 pixels |
| Pixel Pitch | 5.53 μm | 5.94 μm |
| Pixel Density | 3.28 MP/cm2 | 2.83 MP/cm2 |
| Moiré control | Anti-Alias filter | Anti-Alias filter |
| Movie Capability | 720/24p Video | 4K/120p Video |
| ISO Setting | 200 - 3,200 ISO | 250 - 25,600 ISO |
| ISO Boost | 100 - 6,400 ISO | 125 - 51,200 ISO |
| Image Processor | EXPEED | Dual BIONZ XR |
| DXO Sensor Quality (score) | 70 | .. |
| DXO Color Depth (bits) | 22.5 | .. |
| DXO Dynamic Range (EV) | 12.2 | .. |
| DXO Low Light (ISO) | 787 | .. |
| Screen Specs | Nikon D300S | Sony A9 III |
| Viewfinder Type | Optical viewfinder | Electronic viewfinder |
| Viewfinder Field of View | 100% | 100% |
| Viewfinder Magnification | 0.63x | 0.9x |
| Viewfinder Resolution | 9440k dots | |
| Top-Level Screen | Control Panel | no Top Display |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.0inch | 3.2inch |
| LCD Resolution | 920k dots | 2100k dots |
| LCD Attachment | Fixed screen | Fully flexible screen |
| Touch Input | no Touchscreen | Touchscreen |
| Shooting Specs | Nikon D300S | Sony A9 III |
| Focus System | Phase-detect AF | On-Sensor Phase-detect |
| Manual Focusing Aid | no Peaking Feature | Focus Peaking |
| Max Shutter Speed (mechanical) | 1/8000s | 1/80000s |
| Continuous Shooting | 7 shutter flaps/s | 120 shutter flaps/s |
| Electronic Shutter | no E-Shutter | up to 1/80000s |
| Time-Lapse Photography | Intervalometer built-in | Intervalometer built-in |
| Image Stabilization | Lens stabilization only | In-body stabilization |
| Fill Flash | Built-in Flash | no On-Board Flash |
| Storage Medium | CF or SDXC cards | CFexA or SDXC cards |
| Single or Dual Card Slots | Dual card slots | Dual card slots |
| UHS card support | no | UHS-II |
| Connectivity Specs | Nikon D300S | Sony A9 III |
| External Flash | Hotshoe | Hotshoe |
| Studio Flash | PC Sync socket | PC Sync socket |
| USB Connector | USB 2.0 | USB 3.2 |
| HDMI Port | mini HDMI | full HDMI |
| Microphone Port | External MIC port | External MIC port |
| Headphone Socket | no Headphone port | Headphone port |
| Wifi Support | no Wifi | Wifi built-in |
| Bluetooth Support | no Bluetooth | Bluetooth built-in |
| Body Specs | Nikon D300S | Sony A9 III |
| Environmental Sealing | Weathersealed body | Weathersealed body |
| Battery Type | Nikon EN-EL3e | Sony NP-FZ100 |
| Battery Life (CIPA) | 950 shots per charge | 530 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) |
136 x 97 x 83 mm (5.4 x 3.8 x 3.3 in) |
| Camera Weight | 938 g (33.1 oz) | 702 g (24.8 oz) |

Check D300S offers at
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Check A9 III price at
amazon.com
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