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Sony A7 vs A850

The Sony Alpha A7 and the Sony Alpha A850 are two digital cameras that were officially introduced, respectively, in October 2013 and August 2009. The A7 is a mirrorless interchangeable lens camera, while the A850 is a DSLR. Both cameras are equipped with a full frame sensor. The A7 has a resolution of 24 megapixels, whereas the A850 provides 24.4 MP.

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

Headline Specifications
Sony A7 versus Sony A850
Sony A7 Sony A850
Mirrorless system camera Digital single lens reflex
Sony E mount lenses Sony A mount lenses
24 MP, Full Frame Sensor 24.4 MP, Full Frame Sensor
1080/60p Video no Video
ISO 100-25,600 (50 - 51,200) ISO 200-3,200 (100 - 6,400)
Electronic viewfinder (2400k dots) Optical viewfinder
3.0 LCD, 1230k dots 3.0 LCD, 922k dots
Tilting screen (no touchscreen) Fixed screen (not touch-sensitive)
5 shutter flaps per second 3 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodyWeathersealed body
340 shots per battery charge880 shots per battery charge
127 x 94 x 48 mm, 474 g 156 x 117 x 82 mm, 895 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha A7 and the Sony Alpha A850? 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 side-by-side display below illustrates the physical size and weight of the Sony A7 and the Sony A850. 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 Sony A7 vs Sony A850
Compare A7 versus A850 top
Comparison A7 or A850 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A850 is considerably larger (53 percent) than the Sony A7. Moreover, the A850 is substantially heavier (89 percent) than the A7. 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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the A7 gets 340 shots out of its NP-FW50 battery, while the A850 can take 880 images on a single charge of its NP-FM500H power pack. The power pack in the A7 can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life 1
Weather
Sealing
Camera
Launch 2
Launch
Price (USD)
Street
Price
 
Sony A7 5.0 in 3.7 in 1.9 in 16.7 oz 340 Y Oct 2013 1,699i
 
Sony A850 6.1 in 4.6 in 3.2 in 31.6 oz 880 Y Aug 2009 1,999i
 
Nikon D750 5.6 in 4.4 in 3.1 in 26.5 oz 1230 Y Sep 2014 2,299i
 
Nikon D610 5.6 in 4.4 in 3.2 in 30.0 oz 900 Y Oct 2013 1,999 i
 
Panasonic GH4 5.2 in 3.7 in 3.3 in 19.8 oz 500 Y Feb 2014 1,499i
 
Samsung NX1 5.5 in 4.0 in 2.6 in 19.4 oz 500 Y Sep 2014 1,499i
 
Sony A7C 4.9 in 2.8 in 2.4 in 18.0 oz 740 Y Sep 2020 1,799 i
 
Sony A7 III 5.0 in 3.8 in 2.9 in 22.9 oz 610 Y Feb 2018 1,999 i
 
Sony A7 II 5.0 in 3.8 in 2.4 in 21.1 oz 350 Y Nov 2014 1,999i
 
Sony A7S 5.0 in 3.7 in 1.9 in 17.2 oz 380 Y Apr 2014 2,499i
 
Sony A7R 5.0 in 3.7 in 1.9 in 16.4 oz 340 Y Oct 2013 2,299i
 
Sony RX1R 4.4 in 2.6 in 2.8 in 17.0 oz 270 n Jun 2013 2,799i
 
Sony A99 5.8 in 4.4 in 3.1 in 28.6 oz 500 Y Sep 2012 2,799i
 
Sony RX1 4.4 in 2.6 in 2.8 in 17.0 oz 270 n Sep 2012 2,799i
 
Sony A900 6.1 in 4.6 in 3.2 in 31.6 oz 880 Y Sep 2008 2,999i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.

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 A7 was launched at a somewhat lower price (by 15 percent) than the A850, which makes it more attractive for photographers on a tight budget. 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 sensor inside a digital camera is one of the key determinants of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to 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 a full frame sensor, but their sensors differ slightly in size. The sensor area in the A850 is 1 percent bigger. They nevertheless have the same format factor of 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Sony A7 and Sony A850 sensor measures

With 24.4MP, the A850 offers a higher resolution than the A7 (24MP), but the A850 has marginally smaller individual pixels (pixel pitch of 5.94μm versus 5.97μm for the A7). Yet, the A7 is a much more recent model (by 4 years and 1 month) than the A850, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.

The A7 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Sony Alpha A7 has a native sensitivity range from ISO 100 to ISO 25600, which can be extended to ISO 50-51200. The corresponding ISO settings for the Sony Alpha A850 are ISO 200 to ISO 3200, with the possibility to increase the ISO range to 100-6400.

A7 versus A850 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). Of the two cameras under review, the A7 provides substantially higher image quality than the A850, with an overall score that is 11 points higher. This advantage is based on 1 bits higher color depth, 2 EV in additional dynamic range, and 0.7 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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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
 
Sony A7 Full Frame 24.0 6000 40001080/60p24.814.2224890
 
Sony A850 Full Frame 24.4 6048 4032none23.812.2141579
 
Nikon D750 Full Frame 24.2 6016 40161080/60p24.814.5295693
 
Nikon D610 Full Frame 24.2 6016 40161080/30p25.114.4292594
 
Panasonic GH4 Four Thirds 15.9 4608 34564K/30p23.212.879174
 
Samsung NX1 APS-C 28.0 6480 43204K/30p24.213.2136383
 
Sony A7C Full Frame 24.0 6000 40004K/30p........
 
Sony A7 III Full Frame 24.0 6000 40004K/30p25.014.7373096
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
 
Sony A7S Full Frame 12.0 4240 28321080/60p23.913.2370287
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
 
Sony RX1R Full Frame 24.0 6000 40001080/60p25.013.6253791
 
Sony A99 Full Frame 24.0 6000 40001080/60p25.014.0155589
 
Sony RX1 Full Frame 24.0 6000 40001080/60p25.114.3253493
 
Sony A900 Full Frame 24.4 6048 4032none23.712.3143179

Many modern cameras are not only capable of taking still images, but can also record movies. The A7 indeed provides movie recording capabilities, while the A850 does not. The highest resolution format that the A7 can use is 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the A7 has an electronic viewfinder (2400k dots), while the A850 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 viewfinder in the A7 offers a wider field of view (100%) than the one in the A850 (98%), so that a larger proportion of the captured image is visible in the finder. On the other hand, the viewfinder of the A850 has a higher magnification (0.74x vs 0.71x), 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 Sony A7 and Sony A850 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
Size
(inch)
LCD
Resolution
(000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
 
Sony A72400 n 3.0 1230 tilting n 1/8000s 5.0 n n
 
Sony A850optical Y 3.0 922 fixed n 1/8000s 3.0 n Y
 
Nikon D750optical Y 3.2 1229 tilting n 1/4000s 6.0 Y n
 
Nikon D610optical Y 3.2 921 fixed n 1/4000s 6.0 Y n
 
Panasonic GH42359 n 3.0 1036 swivel Y 1/8000s 12.0 Y n
 
Samsung NX12360 Y 3.0 1036 tilting Y 1/8000s 15.0 Y n
 
Sony A7C2360 n 3.0 922 swivel Y 1/4000s 10.0 n Y
 
Sony A7 III2359 n 3.0 922 tilting Y 1/8000s 10.0 n Y
 
Sony A7 II2400 n 3.0 1230 tilting n 1/8000s 5.0 n Y
 
Sony A7S2400 n 3.0 921 tilting n 1/8000s 5.0 n n
 
Sony A7R2400 n 3.0 1230 tilting n 1/8000s 4.0 n n
 
Sony RX1Roptional n 3.0 1229 fixed n 1/4000s 5.0 Y n
 
Sony A992359 Y 3.0 1229 full-flex n 1/8000s 6.0 n Y
 
Sony RX1optional n 3.0 1229 fixed n 1/4000s 5.0 Y n
 
Sony A900optical Y 3.0 922 fixed n 1/8000s 5.0 n Y

One feature that differentiates the A850 and the A7 is in-body image stabilization (IBIS). The A850 reduces the risk of handshake-induced blur with all attached lenses, while the A7 offers no blur reduction with lenses that themselves do not provide optical image stabilization.

The A7 writes its imaging data to SDXC or Memory Stick PRO Duo cards, while the A850 uses Compact Flash or Memory Stick PRO Duo cards. The A850 features dual card slots, which can be very useful in case a memory card fails. In contrast, the A7 only has one slot.

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 Sony Alpha A7 and Sony Alpha A850 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
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
 
Sony A7YstereomonoYYmicro2.0YY-
 
Sony A850Y----mini2.0---
 
Nikon D750YstereomonoYYmini2.0Y--
 
Nikon D610YmonomonoYYmini2.0---
 
Panasonic GH4YstereomonoYYmicro2.0YY-
 
Samsung NX1YstereomonoYYmicro3.0YYY
 
Sony A7CYstereomonoYYmicro3.2YYY
 
Sony A7 IIIYstereomonoYYmicro3.1YYY
 
Sony A7 IIYstereomonoYYmicro2.0YY-
 
Sony A7SYstereomonoYYmicro2.0YY-
 
Sony A7RYstereomonoYYmicro2.0YY-
 
Sony RX1RYstereomonoY-mini2.0---
 
Sony A99YstereomonoYYmini2.0---
 
Sony RX1YstereomonoY-mini2.0---
 
Sony A900Y----mini2.0---

It is notable that the A7 offers wifi support, while the A850 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Studio photographers will appreciate that the Sony A850 (unlike the A7) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the A7 and the A850 have been discontinued, but can regularly be found used on eBay. The A7 was replaced by the Sony A7 II, while the A850 does not have a direct successor. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Sony website.

Review summary

So how do things add up? Is the Sony A7 better than the Sony A850 or vice versa? Below is a summary of the relative strengths of each of the two contestants.


Reasons to prefer the Sony Alpha A7:

  • Better image quality: Scores substantially higher (11 points) in the DXO overall assessment.
  • More dynamic range: Captures a larger spectrum of light and dark details (2 EV of extra DR).
  • Better low-light sensitivity: Requires less light for good images (0.7 stops ISO advantage).
  • Broader imaging potential: Can record not only still images but also 1080/60p movies.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More complete view: Has a viewfinder with a larger field of view (100% vs 98%).
  • More detailed LCD: Has a higher resolution rear screen (1230k vs 922k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Faster burst: Shoots at higher frequency (5 vs 3 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (127x94mm vs 156x117mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 421g or 47 percent) and hence easier to carry around.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • More legacy lens friendly: Can take a broad range of 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.
  • More affordable: Was introduced into a lower priced segment (15 percent cheaper at launch).
  • More modern: Reflects 4 years and 1 month of technical progress since the A850 launch.


Advantages of the Sony Alpha A850:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.74x vs 0.71x).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Longer lasting: Gets more shots (880 versus 340) out of a single battery charge.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • 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 heavily discounted: Has been around for much longer (launched in August 2009).

If the count of individual advantages (bullet points above) is taken as a guide, the A7 is the clear winner of the match-up (17 : 8 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.

A7 17:08 A850

How about other alternatives? Do the specifications of the Sony A7 and the Sony A850 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR 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 A7 or the A850 perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is why expert reviews are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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.

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Review Scores
  Camera
Model
camera
  labs  
dp
review  
ephoto
  zine  
imaging
resource
photography
  blog  
Camera
Launch
Launch
Price (USD)
Street
Price
 
Sony A7+ +80/1005/54.5/55/5 Oct 2013 1,699i
 
Sony A850..75/100..4/54.5/5 Aug 2009 1,999i
 
Nikon D750+ +90/1004.5/55/54.5/5 Sep 2014 2,299i
 
Nikon D610+ +87/1004.5/54.5/54.5/5 Oct 2013 1,999 i
 
Panasonic GH4+ +85/1005/55/55/5 Feb 2014 1,499i
 
Samsung NX1..87/1005/54.5/55/5 Sep 2014 1,499i
 
Sony A7C........4/5 Sep 2020 1,799 i
 
Sony A7 III+ +89/1005/55/55/5 Feb 2018 1,999 i
 
Sony A7 II+82/1004.5/55/55/5 Nov 2014 1,999i
 
Sony A7S..86/1004.5/54.5/55/5 Apr 2014 2,499i
 
Sony A7R+ +82/1004.5/55/55/5 Oct 2013 2,299i
 
Sony RX1R....4/5o4.5/5 Jun 2013 2,799i
 
Sony A99..84/1004.5/5o4.5/5 Sep 2012 2,799i
 
Sony RX1..79/1004/54.5/54.5/5 Sep 2012 2,799i
 
Sony A900+ ++ +4.5/54/55/5 Sep 2008 2,999i
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. Hence, a score should always be seen in the context of the camera's market launch date and its price, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.

Sony A7:
Check Ebay offers
Sony A850:
Check Ebay offers

Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Sony A7 vs Sony A850

    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 Sony A7 Sony A850
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Sony E mount lenses Sony A mount lenses
    Launch Date October 2013 August 2009
    Launch Price USD 1,699 USD 1,999
    Sensor Specs Sony A7 Sony A850
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor Full Frame Sensor
    Sensor Size 35.8 x 23.9 mm 35.9 x 24.0 mm
    Sensor Area 855.62 mm2 861.6 mm2
    Sensor Diagonal 43 mm 43.2 mm
    Crop Factor 1.0x 1.0x
    Sensor Resolution 24 Megapixels 24.4 Megapixels
    Image Resolution 6000 x 4000 pixels 6048 x 4032 pixels
    Pixel Pitch 5.97 μm 5.94 μm
    Pixel Density 2.80 MP/cm2 2.83 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 1080/60p Video no Video
    ISO Setting 100 - 25,600 ISO 200 - 3,200 ISO
    ISO Boost 50 - 51,200 ISO 100 - 6,400 ISO
    Image Processor BIONZ X BIONZ
    DXO Sensor Quality (score) 90 79
    DXO Color Depth (bits) 24.8 23.8
    DXO Dynamic Range (EV) 14.2 12.2
    DXO Low Light (ISO) 2248 1415
    Screen Specs Sony A7 Sony A850
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 98%
    Viewfinder Magnification 0.71x 0.74x
    Viewfinder Resolution 2400k dots
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1230k dots 922k dots
    LCD Attachment Tilting screen Fixed screen
    Shooting Specs Sony A7 Sony A850
    Focus System On-Sensor Phase-detect Phase-detect AF
    Manual Focusing AidFocus Peakingno Peaking Feature
    Continuous Shooting 5 shutter flaps/s 3 shutter flaps/s
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium MS or SDXC cards CF or MS cards
    Second Storage Option Single card slot Dual card slots
    Connectivity Specs Sony A7 Sony A850
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 2.0
    HDMI Port micro HDMI mini HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in no Wifi
    Near-Field Communication NFC built-in no NFC
    Body Specs Sony A7 Sony A850
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type NP-FW50 NP-FM500H
    Battery Life (CIPA)340 shots per charge880 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 127 x 94 x 48 mm
    (5.0 x 3.7 x 1.9 in)
    156 x 117 x 82 mm
    (6.1 x 4.6 x 3.2 in)
    Camera Weight 474 g (16.7 oz) 895 g (31.6 oz)

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