58points

Nikon D3100

86points

Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX

98points

Nikon D850

96points

Sony Alpha a7 III

Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Comparison winner
Nikon D850
Sony Alpha a7 III
vs
vs
vs

95 facts in comparison

Nikon D3100 vs Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX vs Nikon D850 vs Sony Alpha a7 III

Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III
58
points
86
points
98
points
96
points

Why is Nikon D3100 better than Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX & Nikon D850 & Sony Alpha a7 III?

  • Weight
    455gvs675,915,650g
  • Volume
    880.1cm³vs1096.737,1421.164,902.208cm³
  • Width
    124.46mmvs135.5,146,127mm
  • Thickness
    73.66mmvs76,78.5,74mm

Why is Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX better than Nikon D3100 & Nikon D850 & Sony Alpha a7 III?

  • Has focus motor
  • Has rounded aperture blades
  • Is a normal lens
  • Front element doesn't rotate
  • Lens hood is reversible
  • Can focus to infinity
  • Has full-time manual focus
  • Includes lens hood

Why is Nikon D850 better than Nikon D3100 & Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX & Sony Alpha a7 III?

  • Has a built-in HDR mode

Why is Sony Alpha a7 III better than Nikon D3100 & Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX & Nikon D850?

  • Focus points
    693vs11,51,153
  • Continuous shooting at high resolution
    10fpsvs3,6,7fps
  • Noise
    3730ISOvs919,1256,2660ISO
  • Has sensor shift stabilization
  • Has an electronic viewfinder (EVF)
  • Number of microphones
    2vs1,1,1
  • Supports AVCHD format
  • USB version
    3.1vs2,2,3

Top specs and features

Design

1.Weather sealed
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

Device is protected with extra seals to prevent failures due to any kind of weather.

2.Has a flip-out screen
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

Flip-out screens can be useful for tricky shots.

For example

Panasonic Lumix DC-TZ95

3.Has a built-in focus motor
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

The focus motor moves the lens in order to autofocus. For system cameras, having a focus motor in the camera's body allows you to use a wide range of lenses, including lenses which do not have their own focus motor. For compact cameras, a focus motor is usually built-in.

4.has an optical viewfinder
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

An optical viewfinder (or OVF) allows the photographer to compose a shot while seeing exactly what the lens sees. There is no time lag and they require no power - as opposed to electronic viewfinders which can drain battery life. They are also better in low light situations.

5.Has a hot shoe
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

A hot shoe can be used to attach an external flash, as well as light meters, viewfinders, rangefinders and other attachments.

6.Is a system camera
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

A system camera has lots of changeable parts such as lenses, flashes and other accessories. They offer greater flexibility than compact cameras.

Optics

1.has AF tracking
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

With AF tracking, once you choose the subject and press the shutter release part way down, as the subject moves, the autofocus will follow it. No more out of focus shots.

2.focus points

11

51

153

693

The more focus points the more flexibility in picking which part of the scene to focus on. They also give the image sensor a better probability in identifying the right area of the scene to focus on in more automatic modes.

Best

Canon EOS R

5655

3.sensor size

23.1 x 15.4mm

23.5 x 15.6mm

35.9 x 23.9mm

35.8 x 23.8mm

The larger the sensor the more light the sensor captures yielding in better image quality.

Best

Polaroid Snap

81.2 x 25.4mm

4.maximum light sensitivity

12800 ISO

25600 ISO

102400 ISO

25600 ISO

With a higher light sensitivity (ISO level), the sensor absorbs more light. This can be used to capture moving objects using a fast shutter speed, or to take images in low light without using a flash.

Best

Nikon D7500 + Nikon AF-S DX Nikkor 18-140mm f/3.5-5.6G ED VR

1640000 ISO

5.has built-in optical image stabilization
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

Optical image stabilization uses gyroscopic sensors to detect the vibrations of the camera. The lens adjusts the optical path accordingly, ensuring that any type of motion blur is corrected before the sensor captures the image.

6.megapixels

14.8MP

24.71MP

45.7MP

24MP

Best

Panono Camera

108MP

Videography

1.video recording (main camera)

1080 x 24fps

1080 x 60fps

2160 x 30fps

2160 x 30fps

The maximum resolution available for videos shot with the main camera. Although it may be possible to choose among other frame rates, those recordings usually have lower resolutions.

Best

Panasonic Lumix DC-S1

2160 x 60fps

2.Has phase detection autofocus for videos
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

A phase detection autofocus system is faster than a contrast detection autofocus system. Even when recording scenes with a lot of fast movements, the videos are sharp and clear.

3.Has timelapse function
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

A timelapse shows a long passage of time sped up. A series of photographs taken from the same position over a long period is joined together to create a short video. It is great way to capture things like the setting sun, or clouds moving across the sky.

4.has continuous autofocus when recording movies
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

When recording movies they stay focussed and sharp.

5.has a 24p cinema mode
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

24p is a video format (24 frames per second) traditionally used in cinema. Nowadays, it is used to create film-like motion characteristics.

6.supports AVCHD format
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

AVCHD (Advanced Video Coding High Definition) is a file-based format for the digital recording and playback of high-definition video. It's a standard popular among professional cameras and camcorders.

Audio

1.has a stereo microphone
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

A stereo microphone allows to record audio files or movies in stereo without an external microphone.

2.has a microphone in
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

A microphone port allows connecting external high-end or specialized microphones.

3.number of microphones

1

1

1

2

More microphones result in better sound quality and enable the device to filter out background noise.

Best

Nikon Coolpix B600

2

4.has a socket for a 3.5 mm audio jack
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

With a standard mini jack socket, you can use the device with most headphones.

5.has stereo speakers
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.

For example

Panasonic Lumix DC-TS7

6.Has a zoom microphone
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

Zoom microphones record high-quality audio and enable you to record sound from a distance. They can be useful for recording meetings, lectures, and presentations.

For example

Panasonic Lumix DC-LX100 II

Battery

1. longer battery life

550shots

950shots

1840shots

610shots

CIPA is an independent, standard measurement that determines how many shots a camera can take before the battery dies.

Best

Nikon D3x

4400shots

2.has a removable battery
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

The battery is removable and can be replaced by the user if broken.

3.has a battery level indicator
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

An indicator shows you when the device has low battery.

4.has a rechargeable battery
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

The battery can be recharged and used over again.

5.wireless charging
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

The manufacturer offers a branded wireless charging kit. To charge the device, you simply put it down on its charging base.

For example

Canon PowerShot SX740 HS

Features

1.image quality

67

83

100

96

A device's overall image quality score considers: color depth, dynamic range and low light performance. Source: DxOMark.

Best

Nikon D850

100

2.noise

919ISO

1256ISO

2660ISO

3730ISO

The maximum ISO at which the device still captures excellent quality images. Source: DxOMark.

Best

Sony Alpha a7 III

3730ISO

3.Has WiFi
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

The device can connect to WiFi.

4.has an external memory slot
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

The device has a standard memory slot (such as an SD or micro SD card slot) so that you can either extend the internal storage with affordable memory modules or you can retrieve data, such as photographs, easily from a memory card.

5.Has 802.11n WiFi connection
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

802.11n is a wireless standard released in 2009. It has faster transfer rates and improved security compared to its predecessors - a, b and g.

For example

Panasonic Lumix DC-TZ95

6.can be controlled remotely
Nikon D3100
Nikon D7100 + 18-105mm f/3.5-5.6G ED VR DX
Nikon D850
Sony Alpha a7 III

A remote control allows you to control the device remotely. The remote control can be included or optional.

Videos

Powered by

Top 10 cameras

Add to comparison
    This page is currently only available in English.