Nikon P900 vs Sony A7S

The Nikon Coolpix P900 and the Sony Alpha A7S are two digital cameras that were revealed to the public, respectively, in March 2015 and April 2014. The P900 is a fixed lens compact, while the A7S is a mirrorless interchangeable lens camera. The cameras are based on a 1/2.3-inch (P900) and a full frame (A7S) sensor. The Nikon has a resolution of 15.9 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 P900		Sony A7S
Fixed lens compact camera		Mirrorless system camera
24-2000mm f/2.8-6.5		Sony E mount lenses
15.9 MP – 1/2.3" sensor		12 MP – Full Frame sensor
1080/60p Video		1080/60p Video
ISO 100-6,400 (100 - 12,800)		ISO 100-102,400 (50 - 409,600)
Electronic viewfinder (921k dots)		Electronic viewfinder (2400k dots)
3.0" LCD – 921k dots		3.0" LCD – 921k dots
Swivel screen (not touch-sensitive)		Tilting screen (no touchscreen)
7 shutter flaps per second		5 shutter flaps per second
not weather sealed		Weathersealed body
360 shots per battery charge		380 shots per battery charge
140 x 103 x 137 mm, 899 g		127 x 94 x 48 mm, 489 g

Check P900 offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon Coolpix P900 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

The physical size and weight of the Nikon P900 and the Sony A7S are illustrated 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.

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 (17 percent) than the Nikon P900. It is noteworthy in this context that the A7S is splash and dust-proof, while the P900 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the P900 has a lens built in, whereas the A7S is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the A7S and their specifications in the Sony FE Lens Catalog.

Concerning battery life, the P900 gets 360 shots out of its Nikon EN-EL23 battery, while the A7S can take 380 images on a single charge of its Sony NP-FW50 power pack. The battery packs of both cameras can be charged via USB, 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.

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 P900	140 mm	103 mm	137 mm	899 g	360	n	Mar 2015	599	ebay.com
2.		Sony A7S	127 mm	94 mm	48 mm	489 g	380	Y	Apr 2014	2,499	ebay.com
3.		Canon SX60	128 mm	93 mm	114 mm	650 g	340	n	Sep 2014	549	ebay.com
4.		Kodak AZ901	139 mm	104 mm	119 mm	777 g	400	n	Jan 2016	499	amazon.com
5.		Nikon B500	114 mm	78 mm	95 mm	541 g	600	n	Jan 2016	299	ebay.com
6.		Nikon B700	125 mm	85 mm	107 mm	565 g	350	n	Feb 2016	499	ebay.com
7.		Nikon Df	144 mm	110 mm	67 mm	760 g	1400	Y	Nov 2013	2,749	ebay.com
8.		Nikon L840	113 mm	78 mm	96 mm	538 g	590	n	Feb 2015	299	ebay.com
9.		Nikon P950	140 mm	110 mm	150 mm	1005 g	290	n	Jan 2020	799	amazon.com
10.		Nikon P1000	146 mm	119 mm	181 mm	1415 g	250	n	Jul 2018	999	amazon.com
11.		Panasonic FZ100	124 mm	82 mm	92 mm	540 g	410	n	Jul 2010	499	ebay.com
12.		Ricoh GR II	117 mm	63 mm	35 mm	251 g	320	n	Jun 2015	699	ebay.com
13.		Sony A7	127 mm	94 mm	48 mm	474 g	340	Y	Oct 2013	1,699	ebay.com
14.		Sony A7R	127 mm	94 mm	48 mm	465 g	340	Y	Oct 2013	2,299	ebay.com
15.		Sony A7S II	127 mm	96 mm	60 mm	627 g	370	Y	Sep 2015	2,999	ebay.com
16.		Sony HX400V	130 mm	93 mm	103 mm	660 g	300	n	Feb 2014	499	ebay.com
17.		Sony ZV-E1	121 mm	72 mm	54 mm	483 g	570	Y	Mar 2023	2,199	amazon.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
Convert to Imperial

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 P900 was launched at a lower price than the A7S, despite having a lens built in. 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 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. 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 P900 features a 1/2.3-inch sensor and the Sony A7S a full frame sensor. The sensor area in the A7S is 2957 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 1.0. The sensor in the P900 has a native 4:3 aspect ratio, while the one in the A7S offers a 3:2 aspect.

Despite having a smaller sensor, the Nikon P900 offers a higher resolution of 15.9 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 1.33μm versus 8.45μm for the A7S). However, it should be noted that the P900 is a somewhat more recent model (by 10 months) than the A7S, and its sensor might have benefitted from technological advances during this time that partly offset its pixel-size disadvantage. Coming back to sensor resolution, it should be mentioned that the P900 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Nikon P900 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the P900 for good quality output (200 dots per inch) amounts to 23 x 17.3 inches or 58.5 x 43.9 cm, for very good quality (250 dpi) 18.4 x 13.8 inches or 46.8 x 35.1 cm, and for excellent quality (300 dpi) 15.4 x 11.5 inches or 39 x 29.3 cm. The corresponding values for the Sony A7S are 21.2 x 14.2 inches or 53.8 x 36 cm for good quality, 17 x 11.3 inches or 43.1 x 28.8 cm for very good quality, and 14.1 x 9.4 inches or 35.9 x 24 cm for excellent quality prints.

The Nikon Coolpix P900 has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 100-12800. 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.

In terms of underlying technology, the P900 is build around a BSI-CMOS sensor, while the A7S uses a 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.

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

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Nikon P900	1/2.3	15.9	4608	3456	1080/60p	20.2	11.6	727	47
2.		Sony A7S	Full Frame	12.0	4240	2832	1080/60p	23.9	13.2	3702	87
3.		Canon SX60	1/2.3	14.2	4608	3072	1080/60p	19.2	10.8	127	39
4.		Kodak AZ901	1/2.3	20.2	5184	3888	1080/30p	20.3	11.7	806	48
5.		Nikon B500	1/2.3	15.9	4608	3456	1080/60i	20.3	11.7	810	48
6.		Nikon B700	1/2.3	20.2	5184	3888	4K/30p	20.4	11.8	818	48
7.		Nikon Df	Full Frame	16.2	4928	3280	none	24.6	13.1	3279	89
8.		Nikon L840	1/2.3	15.9	4608	3456	1080/60i	20.2	11.6	721	47
9.		Nikon P950	1/2.3	15.9	4608	3456	4K/30p	20.7	12.3	1189	52
10.		Nikon P1000	1/2.3	15.9	4608	3456	4K/30p	20.6	12.1	1044	51
11.		Panasonic FZ100	1/2.3	14.0	4320	3240	1080/60i	19.4	10.7	306	39
12.		Ricoh GR II	APS-C	16.1	4928	3264	1080/30p	23.6	13.7	1078	80
13.		Sony A7	Full Frame	24.0	6000	4000	1080/60p	24.8	14.2	2248	90
14.		Sony A7R	Full Frame	36.2	7360	4912	1080/60p	25.6	14.1	2746	95
15.		Sony A7S II	Full Frame	12.0	4240	2832	4K/30p	23.6	13.3	2993	85
16.		Sony HX400V	1/2.3	20.2	5184	3888	1080/60p	20.1	11.4	629	45
17.		Sony ZV-E1	Full Frame	12.0	4240	2832	4K/60p	25.4	14.6	3181	96
Note: DXO values in italics represent estimates based on sensor size and age.

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, and both provide the same movie specifications (1080/60p).

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the A7S offers a substantially higher resolution than the one in the P900 (2400k vs 921k dots). The table below summarizes some of the other core capabilities of the Nikon P900 and Sony A7S in connection with corresponding information for a sample of similar cameras.

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 P900	921	n	3.0 / 921	swivel	n	1/4000s	7.0/s	Y	Y
2.		Sony A7S	2400	n	3.0 / 921	tilting	n	1/8000s	5.0/s	n	n
3.		Canon SX60	922	n	3.0 / 922	swivel	n	1/2000s	6.4/s	Y	Y
4.		Kodak AZ901	202	n	3.0 / 920	swivel	n	1/2000s	5.0/s	Y	Y
5.		Nikon B500	none	n	3.0 / 921	tilting	n	1/4000s	7.4/s	Y	Y
6.		Nikon B700	921	n	3.0 / 921	swivel	n	1/4000s	5.0/s	Y	Y
7.		Nikon Df	optical	Y	3.2 / 921	fixed	n	1/4000s	5.5/s	n	n
8.		Nikon L840	none	n	3.0 / 921	tilting	n	1/4000s	7.4/s	Y	Y
9.		Nikon P950	2359	n	3.2 / 921	swivel	n	1/4000s	7.0/s	Y	Y
10.		Nikon P1000	2359	n	3.2 / 921	swivel	n	1/4000s	7.0/s	Y	Y
11.		Panasonic FZ100	202	n	3.0 / 460	swivel	n	1/2000s	11.0/s	Y	Y
12.		Ricoh GR II	optional	n	3.0 / 1230	fixed	n	1/4000s	4.0/s	Y	n
13.		Sony A7	2400	n	3.0 / 1230	tilting	n	1/8000s	5.0/s	n	n
14.		Sony A7R	2400	n	3.0 / 1230	tilting	n	1/8000s	4.0/s	n	n
15.		Sony A7S II	2400	n	3.0 / 1229	tilting	n	1/8000s	5.0/s	n	Y
16.		Sony HX400V	210	n	3.0 / 921	tilting	n	1/4000s	10.0/s	Y	Y
17.		Sony ZV-E1	none	n	3.0 / 1037	swivel	Y	1/8000s	10.0/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 P900 has one, while the A7S does not. While the built-in flash of the P900 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 P900 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 P900 writes its imaging data to SDXC cards, while the A7S uses SDXC or Memory Stick PRO Duo cards. The A7S supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the P900 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 Coolpix P900 and Sony Alpha A7S and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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 P900	-	stereo / mono	-	-	micro	2.0	Y	Y	-
2.		Sony A7S	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
3.		Canon SX60	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
4.		Kodak AZ901	-	stereo / mono	-	-	micro	2.0	Y	-	-
5.		Nikon B500	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
6.		Nikon B700	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
7.		Nikon Df	Y	- / -	-	-	mini	2.0	-	-	-
8.		Nikon L840	-	stereo / mono	-	-	micro	2.0	Y	Y	-
9.		Nikon P950	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
10.		Nikon P1000	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
11.		Panasonic FZ100	Y	stereo / mono	-	-	mini	2.0	-	-	-
12.		Ricoh GR II	Y	stereo / mono	-	-	micro	2.0	Y	Y	-
13.		Sony A7	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
14.		Sony A7R	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
15.		Sony A7S II	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
16.		Sony HX400V	Y	stereo / mono	-	-	micro	2.0	Y	Y	-
17.		Sony ZV-E1	Y	stereo / mono	Y	Y	micro	3.2	Y	-	Y

It is notable that the A7S has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The P900 does not feature such a mic input.

Travel and landscape photographers will find it useful that the P900 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the P900 and the A7S have been discontinued, but can regularly be found used on ebay. The A7S was replaced by the Sony A7S II, while the P900 was followed by the Nikon P950. Further information on the features and operation of the P900 and A7S can be found, respectively, in the Nikon P900 Manual (free pdf) or the online Sony A7S Manual.

Review summary

So what conclusions can be drawn? Which of the two cameras – the Nikon P900 or the Sony A7S – 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 Coolpix P900:

• More detail: Offers more megapixels (15.9 vs 12MP) with a 13% higher linear resolution.
• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• 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.
• Ready to shoot: Has a lens built-in, whereas the A7S requires a separate lens.
• Sharper images: Has hand-shake reducing image stabilization built-in.
• Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
• Easier geotagging: Features an internal GPS sensor to log localization data.
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More modern: Is somewhat more recent (announced 10 months after the A7S).

Reasons to prefer the Sony Alpha A7S:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
• Richer colors: The pixel size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
• Better sound: Can connect to an external microphone for higher quality sound recording.
• Better sound control: Has a headphone port that enables audio monitoring while recording.
• More detailed viewfinder: Has higher resolution electronic viewfinder (2400k vs 921k dots).
• Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
• Less disturbing: Has an electronic shutter option for completely silent shooting.
• More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
• More compact: Is smaller (127x94mm vs 140x103mm) and will fit more readily into a bag.
• Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
• More heavily discounted: Has been on the market for longer (launched in April 2014).

If the count of relative strengths (bullet points above) is taken as a measure, the A7S is the clear winner of the contest (16 : 12 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding 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.

How about other alternatives? Do the specifications of the Nikon P900 and the Sony A7S place the cameras among the top in their class? Find out in the latest Best Superzoom Camera and Best Mirrorless Interchangeable Lens Camera listings 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 P900 or the A7S 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.

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 P900	..	..	..	77/100	4/5	4/5	Mar 2015	599	ebay.com
2.		Sony A7S	4/5	..	..	86/100	4.5/5	5/5	Apr 2014	2,499	ebay.com
3.		Canon SX60	3/5	+ +	..	75/100	4/5	4.5/5	Sep 2014	549	ebay.com
4.		Kodak AZ901	..	..	..	..	3.5/5	3/5	Jan 2016	499	amazon.com
5.		Nikon B500	..	+	..	..	4/5	3.5/5	Jan 2016	299	ebay.com
6.		Nikon B700	..	+	..	..	4/5	4/5	Feb 2016	499	ebay.com
7.		Nikon Df	4/5	..	..	81/100	4/5	4/5	Nov 2013	2,749	ebay.com
8.		Nikon L840	..	+ +	..	..	3.5/5	4/5	Feb 2015	299	ebay.com
9.		Nikon P950	..	..	3/5	..	4/5	4/5	Jan 2020	799	amazon.com
10.		Nikon P1000	..	+	3.5/5	73/100	3.5/5	3.5/5	Jul 2018	999	amazon.com
11.		Panasonic FZ100	..	+	..	..	4.5/5	4.5/5	Jul 2010	499	ebay.com
12.		Ricoh GR II	..	..	..	..	4.5/5	4.5/5	Jun 2015	699	ebay.com
13.		Sony A7	5/5	+ +	..	80/100	5/5	5/5	Oct 2013	1,699	ebay.com
14.		Sony A7R	5/5	+ +	..	82/100	4.5/5	5/5	Oct 2013	2,299	ebay.com
15.		Sony A7S II	5/5	+	..	..	4.5/5	5/5	Sep 2015	2,999	ebay.com
16.		Sony HX400V	4/5	+ +	..	..	4/5	4/5	Feb 2014	499	ebay.com
17.		Sony ZV-E1	..	+	4/5	..	..	4.5/5	Mar 2023	2,199	amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Other camera comparisons

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