Nikon D7000 vs Sony A5100

The Nikon D7000 and the Sony Alpha A5100 are two digital cameras that were officially introduced, respectively, in September 2010 and August 2014. The D7000 is a DSLR, while the A5100 is a mirrorless interchangeable lens camera. Both cameras are equipped with an APS-C sensor. The Nikon has a resolution of 16.1 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.

Headline Specifications

Nikon D7000		Sony A5100
Digital single lens reflex		Mirrorless system camera
Nikon F mount lenses		Sony E mount lenses
16.1 MP, APS-C Sensor		24 MP, APS-C Sensor
10800/24p Video		1080/60p Video
ISO 100-6400 (100-25600)		ISO 100-25600
Optical viewfinder		No viewfinder, LCD framing
3.0" LCD, 921k dots		3.0" LCD, 922k dots
Fixed screen (not touch-sensitive)		Tilting touchscreen
6 shutter flaps per second		6 shutter flaps per second
Weathersealed body		Not weather sealed
1050 shots per battery charge		400 shots per battery charge
132 x 105 x 77 mm, 780 g		110 x 63 x 36 mm, 283 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D7000 and the Sony Alpha A5100? 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 D7000 and the Sony A5100 are illustrated 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.

The A5100 can be obtained in two different colors (black, white), while the D7000 is only available in black.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A5100 is considerably smaller (50 percent) than the Nikon D7000. Moreover, the A5100 is substantially lighter (64 percent) than the D7000. It is worth mentioning in this context that the D7000 is splash and dust resistant, while the A5100 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. Both cameras have similarly sized sensors, but DSLRs have a larger flange-to-focal plane distance than mirrorless cameras, which imposes contraints on the optical engineering process and generally leads to bigger and heavier lenses. You can compare the optics available for the two cameras in the Nikon Lens Catalog (D7000) and the Sony E-Mount Lens Catalog (A5100). Mirrorless cameras, such as the A5100, 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 D7000 gets 1050 shots out of its EN-EL15 battery, while the A5100 can take 400 images on a single charge of its NP-FW50 power pack. The power pack in the A5100 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, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.

Camera Body Specifications

	Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life (CIPA)	Weather Sealing (yes/no)	Camera Launch (announced)	Launch Price (USD)	Street Price (USD)	Used Price (USD)	Camera Model
	Nikon D7000»	5.2 in	4.1 in	3.0 in	27.5 oz	1050	Y	Sep 2010	1,499	-		Nikon D7000
	Sony A5100«	4.3 in	2.5 in	1.4 in	10.0 oz	400	n	Aug 2014	549			Sony A5100
	Canon 60D« »	5.7 in	4.2 in	3.1 in	26.6 oz	1100	Y	Aug 2010	1,399	-		Canon 60D
	Canon 7D« »	5.8 in	4.4 in	2.9 in	30.3 oz	800	Y	Sep 2009	1,699	-		Canon 7D
	Nikon D7500« »	5.4 in	4.1 in	2.9 in	25.4 oz	950	Y	Apr 2017	1,299			Nikon D7500
	Nikon D7100« »	5.4 in	4.2 in	3.0 in	27.0 oz	950	Y	Feb 2013	1,199	-		Nikon D7100
	Nikon D5100« »	5.0 in	3.8 in	3.1 in	19.8 oz	660	n	Apr 2011	749	-		Nikon D5100
	Nikon D3100« »	4.9 in	3.8 in	3.0 in	17.8 oz	550	n	Aug 2010	599	-		Nikon D3100
	Nikon D300S« »	5.8 in	4.5 in	3.2 in	33.1 oz	950	Y	Jul 2009	1,799	-		Nikon D300S
	Nikon D90« »	5.2 in	4.1 in	3.0 in	24.8 oz	850	n	Aug 2008	1,299	-		Nikon D90
	Nikon D300« »	5.8 in	4.5 in	2.9 in	32.6 oz	1000	Y	Aug 2007	1,799	-		Nikon D300
	Nikon D200« »	5.8 in	4.4 in	2.9 in	32.5 oz	400	Y	Nov 2005	1,699	-		Nikon D200
	Sony RX100 IV« »	4.0 in	2.3 in	1.6 in	10.5 oz	280	n	Jun 2015	999	-		Sony RX100 IV
	Sony A5000« »	4.3 in	2.5 in	1.4 in	9.5 oz	420	n	Jan 2014	449	-		Sony A5000
	Sony A6000« »	4.7 in	2.6 in	1.8 in	12.1 oz	360	n	Feb 2014	599	-		Sony A6000
	Sony NEX-3N« »	4.3 in	2.4 in	1.4 in	9.5 oz	480	n	Feb 2013	499	-		Sony NEX-3N
	Sony RX100« »	4.0 in	2.3 in	1.4 in	8.5 oz	330	n	Jun 2012	649	-		Sony RX100
Convert to Metric
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The A5100 was launched at a markedly lower price (by 63 percent) than the D7000, 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 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. 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 associated with larger, more expensive camera bodies and lenses.

Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the A5100 is 1 percent smaller. They nevertheless have the same format factor of 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Despite having a slightly smaller sensor, the A5100 offers a higher resolution of 24 megapixels, compared with 16.1 MP of the D7000. 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 3.91μm versus 4.80μm for the D7000). However, it should be noted that the A5100 is much more recent (by 3 years and 11 months) than the D7000, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.

The resolution advantage of the Sony A5100 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A5100 for good quality output (200 dots per inch) amounts to 30 x 20 inch or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inch or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inch or 50.8 x 33.9 cm. The corresponding values for the Nikon D7000 are 24.6 x 16.3 inch or 62.6 x 41.5 cm for good quality, 19.7 x 13.1 inch or 50.1 x 33.2 cm for very good quality, and 16.4 x 10.9 inch or 41.7 x 27.6 cm for excellent quality prints.

The A5100 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Nikon D7000 has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 100-25600. The corresponding ISO settings for the Sony Alpha A5100 are ISO 100 to ISO 25600 (no boost).

For many cameras, data on sensor performance has been reported by DXO Mark. 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 Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the A5100 provides a faster frame rate than the D7000. It can shoot movie footage at 1080/60p, while the Nikon is limited to 10800/24p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the D7000 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the A5100 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Nikon D7000 and Sony A5100 in connection with corresponding information for a sample of similar cameras.

One feature that is present on the D7000, but is missing on the A5100 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 D7000 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 D7000 writes its imaging data to SDXC cards, while the A5100 uses SDXC or Memory Stick PRO Duo cards. The D7000 features dual card slots, which can be very useful in case a memory card fails. In contrast, the A5100 only has one slot. The A5100 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the D7000 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 D7000 and Sony Alpha A5100 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

It is notable that the D7000 has a hotshoe, while the A5100 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

The A5100 is a recent model that features in the current product line-up of Sony. In contrast, the D7000 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the D7000 was succeeded by the Nikon D7100. 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 how do things add up? Is there a clear favorite between the Nikon D7000 and the Sony A5100? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

Advantages of the Nikon D7000:

• More dynamic range: Captures a larger spectrum of light and dark details (1.2 EV of extra DR).
• Better sound: Can connect to an external microphone for higher quality sound recording.
• Easier framing: Has an optical viewfinder for image composition and settings control.
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• Longer lasting: Can take more shots (1050 versus 400) on a single battery charge.
• Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
• More heavily discounted: Has been available for much longer (launched in September 2010).

Reasons to prefer the Sony Alpha A5100:

• More detail: Has more megapixels (24 vs 16.1MP), which boosts linear resolution by 22%.
• Better video: Provides higher movie framerates (1080/60p versus 10800/24p).
• Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
• More flexible LCD: Has a tilting screen for odd-angle shots in 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.
• More compact: Is smaller (110x63mm vs 132x105mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 497g or 64 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 affordable: Was introduced into a lower priced category (63 percent cheaper at launch).
• More modern: Reflects 3 years and 11 months of technical progress since the D7000 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the A5100 emerges as the winner of the match-up (14 : 11 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 wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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 D7000 and the Sony A5100 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 says little about, for example, the shooting experience and imaging performance of the D7000 and the A5100 in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

Expert reviews

This is where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.

Review Scores

	Camera Model						Camera Launch (announced)	Launch Price (USD)	Street Price (USD)	Used Price (USD)	Camera Model
	Nikon D7000»	-	80/100	4.5/5	5/5	4.5/5	Sep 2010	1,499	-		Nikon D7000
	Sony A5100«	+	-	4.5/5	4.5/5	5/5	Aug 2014	549			Sony A5100
	Canon 60D« »	+	79/100	4/5	5/5	4.5/5	Aug 2010	1,399	-		Canon 60D
	Canon 7D« »	+ +	84/100	4.5/5	5/5	4.5/5	Sep 2009	1,699	-		Canon 7D
	Nikon D7500« »	+ +	86/100	5/5	4.5/5	4.5/5	Apr 2017	1,299			Nikon D7500
	Nikon D7100« »	+ +	85/100	4.5/5	5/5	4.5/5	Feb 2013	1,199	-		Nikon D7100
	Nikon D5100« »	+ +	76/100	4.5/5	5/5	4.5/5	Apr 2011	749	-		Nikon D5100
	Nikon D3100« »	+ +	72/100	4.5/5	5/5	4.5/5	Aug 2010	599	-		Nikon D3100
	Nikon D300S« »	+ +	82/100	4/5	5/5	4.5/5	Jul 2009	1,799	-		Nikon D300S
	Nikon D90« »	+ +	+ +	4/5	5/5	4.5/5	Aug 2008	1,299	-		Nikon D90
	Nikon D300« »	+ +	+ +	5/5	o	4.5/5	Aug 2007	1,799	-		Nikon D300
	Nikon D200« »	+ +	+ +	o	5/5	-	Nov 2005	1,699	-		Nikon D200
	Sony RX100 IV« »	+ +	85/100	4/5	4.5/5	4.5/5	Jun 2015	999	-		Sony RX100 IV
	Sony A5000« »	+	-	4.5/5	o	4.5/5	Jan 2014	449	-		Sony A5000
	Sony A6000« »	+	80/100	4.5/5	5/5	5/5	Feb 2014	599	-		Sony A6000
	Sony NEX-3N« »	-	-	4.5/5	4/5	4.5/5	Feb 2013	499	-		Sony NEX-3N
	Sony RX100« »	+ +	78/100	4/5	5/5	5/5	Jun 2012	649	-		Sony RX100
Notes: (+ +) 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. A score, therefore, has to be seen in close connection to the price and market introduction time 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.

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. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

Specifications: Nikon D7000 vs Sony A5100

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.

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