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Nikon D100 vs Sony A99

The Nikon D100 and the Sony Alpha SLT-A99 are two digital cameras that were announced, respectively, in February 2002 and September 2012. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (D100) and a full frame (A99) sensor. The Nikon has a resolution of 6 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 D100
versus
Sony A99
Nikon D100   Sony A99
Digital single lens reflex Digital single lens reflex
Nikon F mount lenses Sony A mount lenses
6 MP – APS-C sensor 24 MP – Full Frame sensor
no Video 1080/60p Video
ISO 200-800 (200 - 1,600) ISO 100-25,600
Optical viewfinder Electronic viewfinder (2359k dots)
1.8" LCD – 118k dots 1.8" LCD – 1229k dots
Fixed screen (not touch-sensitive) Fully flexible screen (no touchscreen)
3 shutter flaps per second 6 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
370 shots per battery charge500 shots per battery charge
144 x 116 x 81 mm, 780 g 147 x 111 x 78 mm, 812 g
Nikon D100:
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Sony A99:
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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D100 and the Sony Alpha SLT-A99? 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 D100 and the Sony A99 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth measures are rounded to the nearest millimeter.

Size Nikon D100 vs Sony A99
Compare D100 versus A99 top
Comparison D100 or A99 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A99 is somewhat smaller (2 percent) than the Nikon D100. However, the A99 is slightly heavier (4 percent) than the D100. It is noteworthy in this context that the A99 is splash and dust-proof, while the D100 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. 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 D100 gets 370 shots out of its EN-EL3 battery, while the A99 can take 500 images on a single charge of its NP-FM500H power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, you can 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
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D100 144 mm 116 mm 81 mm 780 g 370 n Feb 2002 1,999i
2.
 
Sony A99 147 mm 111 mm 78 mm 812 g 500 Y Sep 2012 2,799i
3.
 
Canon 10D 150 mm 107 mm 75 mm 850 g 500 n Feb 2003 1,999i
4.
 
Nikon D90 132 mm 103 mm 77 mm 703 g 850 n Aug 2008 1,299i
5.
 
Nikon D300 147 mm 114 mm 74 mm 925 g 1000 Y Aug 2007 1,799i
6.
 
Nikon D40 124 mm 94 mm 64 mm 522 g 470 n Nov 2006 499i
7.
 
Nikon D80 132 mm 103 mm 77 mm 668 g 600 n Aug 2006 999i
8.
 
Nikon D50 133 mm 102 mm 76 mm 620 g 400 n Apr 2005 749i
9.
 
Nikon D70s 140 mm 111 mm 78 mm 679 g 500 n Apr 2005 899i
10.
 
Nikon D200 147 mm 113 mm 74 mm 920 g 400 Y Nov 2005 1,699i
11.
 
Nikon D70 140 mm 111 mm 78 mm 679 g 400 n Jan 2004 999i
12.
 
Nikon D1X 157 mm 153 mm 85 mm 1100 g 1200 Y Feb 2001 5,999i
13.
 
Sony A9 II 129 mm 96 mm 76 mm 678 g 690 Y Oct 2019 4,499 i
14.
 
Sony A99 II 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 3,199 i
15.
 
Sony A77 143 mm 104 mm 81 mm 732 g 470 Y Aug 2011 1,399i
16.
 
Sony A850 156 mm 117 mm 82 mm 895 g 880 Y Aug 2009 1,999i
17.
 
Sony A900 156 mm 117 mm 82 mm 895 g 880 Y Sep 2008 2,999i
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 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 D100 was launched at a markedly lower price (by 29 percent) than the A99, which puts it into a different market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

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Sensor comparison

The size of the imaging sensor is a crucial determinant 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. 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 D100 features an APS-C sensor and the Sony A99 a full frame sensor. The sensor area in the A99 is 130 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Nikon D100 and Sony A99 sensor measures

With 24MP, the A99 offers a higher resolution than the D100 (6MP), but the A99 has smaller individual pixels (pixel pitch of 5.96μm versus 7.85μm for the D100). Yet, the A99 is a much more recent model (by 10 years and 6 months) than the D100, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units.

The resolution advantage of the Sony A99 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A99 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 D100 are 15 x 10 inches or 38.2 x 25.4 cm for good quality, 12 x 8 inches or 30.6 x 20.3 cm for very good quality, and 10 x 6.7 inches or 25.5 x 16.9 cm for excellent quality prints.

The Nikon D100 has a native sensitivity range from ISO 200 to ISO 800, which can be extended to ISO 200-1600. The corresponding ISO settings for the Sony Alpha SLT-A99 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-25600.

D100 versus A99 MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). 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
1.
 
Nikon D100 APS-C 6.0 3008 2000none20.49.939448
2.
 
Sony A99 Full Frame 24.0 6000 40001080/60p25.014.0155589
3.
 
Canon 10D APS-C 6.3 3072 2048none21.110.957157
4.
 
Nikon D90 APS-C 12.2 4288 2848720/24p22.712.597773
5.
 
Nikon D300 APS-C 12.2 4288 2848none22.112.067967
6.
 
Nikon D40 APS-C 6.0 3008 2000none21.011.056156
7.
 
Nikon D80 APS-C 10.0 3872 2592none22.111.252461
8.
 
Nikon D50 APS-C 6.0 3008 2000none20.910.856055
9.
 
Nikon D70s APS-C 6.0 3008 2000none20.410.352950
10.
 
Nikon D200 APS-C 10.0 3872 2592none22.311.558364
11.
 
Nikon D70 APS-C 6.0 3008 2000none20.410.352950
12.
 
Nikon D1X APS-C 5.9 3008 1960none........
13.
 
Sony A9 II Full Frame 24.0 6000 40004K/30p25.014.0343493
14.
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792
15.
 
Sony A77 APS-C 24.0 6000 40001080/60p24.013.280178
16.
 
Sony A850 Full Frame 24.4 6048 4032none23.812.2141579
17.
 
Sony A900 Full Frame 24.4 6048 4032none23.712.3143179
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 A99 indeed provides for movie recording, while the D100 does not. The highest resolution format that the A99 can use is 1080/60p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A99 has an electronic viewfinder (2359k dots), while the D100 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 A99 offers a wider field of view (100%) than the one in the D100 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A99 has a higher magnification (0.71x vs 0.53x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Nikon D100 and Sony A99 in connection with corresponding information for a sample of similar cameras.

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Core Features
    Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Nikon D100optical Y1.8 / 118 fixed n 1/4000s 3.0/s Y n
2.
 
Sony A992359 Y3.0 / 1229 full-flex n 1/8000s 6.0/s n Y
3.
 
Canon 10Doptical Y1.8 / 118 fixed n 1/4000s 3.0/s Y n
4.
 
Nikon D90optical Y3.0 / 920 fixed n 1/4000s 4.5/s Y n
5.
 
Nikon D300optical Y3.0 / 922 fixed n 1/8000s 6.0/s Y n
6.
 
Nikon D40optical n2.5 / 230 fixed n 1/4000s 2.5/s Y n
7.
 
Nikon D80optical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
8.
 
Nikon D50optical n2.0 / 130 fixed n 1/4000s 2.5/s Y n
9.
 
Nikon D70soptical n2.0 / 130 fixed n 1/8000s 3.0/s Y n
10.
 
Nikon D200optical Y2.5 / 230 fixed n 1/8000s 5.0/s Y n
11.
 
Nikon D70optical n1.8 / 130 fixed n 1/8000s 3.0/s Y n
12.
 
Nikon D1Xoptical Y2.0 / 120 fixed n 1/16000s 3.0/s n n
13.
 
Sony A9 II3686 n3.0 / 1440 tilting Y 1/8000s 20.0/s n Y
14.
 
Sony A99 II2400 Y3.0 / 1229 full-flex n 1/8000s 12.0/s n Y
15.
 
Sony A772359 Y3.0 / 921 full-flex n 1/8000s 12.0/s Y Y
16.
 
Sony A850optical Y3.0 / 922 fixed n 1/8000s 3.0/s n Y
17.
 
Sony A900optical Y3.0 / 922 fixed n 1/8000s 5.0/s n Y
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The D100 has one, while the A99 does not. While the built-in flash of the D100 is not very powerful, it can at times be useful as a fill-in light.

The A99 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 D100 does not have a selfie-screen.

The D100 writes its imaging data to Compact Flash cards, while the A99 uses SDXC or Memory Stick PRO Duo cards. The A99 features dual card slots, which can be very useful in case a memory card fails. In contrast, the D100 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 Nikon D100 and Sony Alpha SLT-A99 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Nikon D100Y- / ----1.1---
2.
 
Sony A99Ystereo / monoYYmini2.0---
3.
 
Canon 10DY- / ----1.1---
4.
 
Nikon D90Ymono / mono--mini2.0---
5.
 
Nikon D300Y- / ---mini2.0---
6.
 
Nikon D40Y- / ----2.0---
7.
 
Nikon D80Y- / ----2.0---
8.
 
Nikon D50Y- / ----2.0---
9.
 
Nikon D70sY- / ----2.0---
10.
 
Nikon D200Y- / ----2.0---
11.
 
Nikon D70Y- / ----1.0---
12.
 
Nikon D1XY- / ----FW---
13.
 
Sony A9 IIYstereo / monoYYmicro3.1YYY
14.
 
Sony A99 IIYstereo / monoYYmicro2.0YYY
15.
 
Sony A77Ystereo / monoY-mini2.0---
16.
 
Sony A850Y- / ---mini2.0---
17.
 
Sony A900Y- / ---mini2.0---

Studio photographers will appreciate that the Sony A99 (unlike the D100) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Travel and landscape photographers will find it useful that the A99 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the D100 and the A99 have been discontinued, but can regularly be found used on eBay. The D100 was replaced by the Nikon D200, while the A99 was followed by the Sony A99 II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon and Sony websites.

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Review summary

So what is the bottom line? Which of the two cameras – the Nikon D100 or the Sony A99 – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.

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Reasons to prefer the Nikon D100:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (29 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in February 2002).

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Advantages of the Sony Alpha SLT-A99:

  • More detail: Has more megapixels (24 vs 6MP), which boosts linear resolution by 100%.
  • 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.
  • Broader imaging potential: Can capture not only stills but also 1080/60p video.
  • 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 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.71x vs 0.53x).
  • Larger screen: Has a bigger rear LCD (3.0" vs 1.8") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 118k dots).
  • More flexible LCD: Has a full-flex 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 shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (6 vs 3 flaps/sec) to capture the decisive moment.
  • Longer lasting: Gets more shots (500 versus 370) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • Faster data transfer: Supports a more advanced USB protocol (2.0 vs 1.1).
  • 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 modern: Reflects 10 years and 6 months of technical progress since the D100 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the A99 is the clear winner of the contest (23 : 4 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera. A professional 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.

D100 04:23 A99

How about other alternatives? Do the specifications of the Nikon D100 and the Sony A99 place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing 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 D100 or the A99 perform in practice. 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 adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D100......+ +o.. Feb 2002 1,999i
2.
 
Sony A995/5....84/1004.5/54.5/5 Sep 2012 2,799i
3.
 
Canon 10D......+ +.... Feb 2003 1,999i
4.
 
Nikon D90..+ +..+ +4/54.5/5 Aug 2008 1,299i
5.
 
Nikon D300..+ +..+ +5/54.5/5 Aug 2007 1,799i
6.
 
Nikon D40..81/100..+ +o4.5/5 Nov 2006 499i
7.
 
Nikon D80..+..+ +o4.5/5 Aug 2006 999i
8.
 
Nikon D50..78/100..+ +4/54.5/5 Apr 2005 749i
9.
 
Nikon D70s..........5/5 Apr 2005 899i
10.
 
Nikon D200..+ +..+ +o.. Nov 2005 1,699i
11.
 
Nikon D70......+ +.... Jan 2004 999i
12.
 
Nikon D1X......+ +.... Feb 2001 5,999i
13.
 
Sony A9 II....5/590/1005/55/5 Oct 2019 4,499 i
14.
 
Sony A99 II....4.5/585/1004.5/54.5/5 Sep 2016 3,199 i
15.
 
Sony A775/591/100..81/100..5/5 Aug 2011 1,399i
16.
 
Sony A8503/5....75/100..4.5/5 Aug 2009 1,999i
17.
 
Sony A900..+ +..+ +4.5/55/5 Sep 2008 2,999i
Notes: (+ +) 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, please note that some of the review sites have changed their methodology and reporting over time.

Nikon D100:
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Sony A99:
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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 your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Nikon D100 vs Sony A99

    Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

    Camera Specifications
    Camera Model Nikon D100 Sony A99
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Nikon F mount lenses Sony A mount lenses
    Launch Date February 2002 September 2012
    Launch Price USD 1,999 USD 2,799
    Sensor Specs Nikon D100 Sony A99
    Sensor Technology CCD CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 23.7 x 15.6 mm 35.8 x 23.8 mm
    Sensor Area 369.72 mm2 852.04 mm2
    Sensor Diagonal 28.4 mm 43 mm
    Crop Factor 1.5x 1.0x
    Sensor Resolution 6 Megapixels 24 Megapixels
    Image Resolution 3008 x 2000 pixels 6000 x 4000 pixels
    Pixel Pitch 7.85 μm 5.96 μm
    Pixel Density 1.63 MP/cm2 2.82 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 1080/60p Video
    ISO Setting 200 - 800 ISO 100 - 25,600 ISO
    ISO Boost 200 - 1,600 ISO 50 - 25,600 ISO
    DXO Sensor Quality (score) .. 89
    DXO Color Depth (bits) .. 25.0
    DXO Dynamic Range (EV) .. 14.0
    DXO Low Light (ISO) .. 1555
    Screen Specs Nikon D100 Sony A99
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.53x 0.71x
    Viewfinder Resolution 2359k dots
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View
    Rear LCD Size 1.8inch 3.0inch
    LCD Resolution 118k dots 1229k dots
    LCD Attachment Fixed screen Fully flexible screen
    Shooting Specs Nikon D100 Sony A99
    Focus System Phase-detect AF Phase-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 3 shutter flaps/s 6 shutter flaps/s
    Shutter Life Expectancy50 000 actuations200 000 actuations
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium CF cards MS or SDXC cards
    Second Storage Option Single card slot Dual card slots
    Connectivity Specs Nikon D100 Sony A99
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 1.1 USB 2.0
    HDMI Port no HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi no Wifi
    Geotagging no internal GPS GPS built-in
    Body Specs Nikon D100 Sony A99
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type EN-EL3 NP-FM500H
    Battery Life (CIPA)370 shots per charge500 shots per charge
    Body Dimensions 144 x 116 x 81 mm
    (5.7 x 4.6 x 3.2 in)
    147 x 111 x 78 mm
    (5.8 x 4.4 x 3.1 in)
    Camera Weight 780 g (27.5 oz) 812 g (28.6 oz)
    Nikon D100:
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    Sony A99:
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