vs
vs
Nikon D3100
Nikon D70
Sony Alpha 7R III
Top 40%1,456 points
Top 40%
Top 58%1,018 points
Top 58%
Top 10%2,172 points
Top 10%
Nikon D3100
Nikon D70
Sony Alpha 7R III
Top specs and features

Nikon D3100 vs Nikon D70 vs Sony Alpha 7R III: 64 facts in comparison

1. megapixels

14.8MP
Panono Camera: 108MP
6.1MP
42.4MP

2. sensor size

The larger the sensor the more light the sensor captures yielding in better image quality.
23.1 x 15.4mm
Polaroid Snap: 81.2 x 25.4mm
23.7 x 15.6mm
24 x 35.9mm

3. focus points

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.
11
Canon EOS R: 5655
5
425

4. has a flip-out screen

Flip-out screens are useful for doing tricky shots.
Nikon D3100
Nikon D70
Sony Alpha 7R III
28% have it

5. maximum light sensitivity

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.
12800 ISO
Nikon D7500 + Nikon AF-S DX Nikkor 18-140mm f/3.5-5.6G ED VR: 1640000 ISO
1600 ISO
102400 ISO

6. weight

455g
HTC Re: 65.5g
595g
675g

7. Has WiFi

The device can connect to WiFi.
Nikon D3100
Nikon D70
Sony Alpha 7R III
39% have it

8. Has phase detection autofocus for videos

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.
Nikon D3100
Nikon D70
Sony Alpha 7R III
12% have it

9. has a stereo microphone

A stereo microphone allows to record audio files or movies in stereo without an external microphone.
Nikon D3100
Nikon D70
Sony Alpha 7R III
50% have it

10. Has phase detection autofocus for photos

A phase detection autofocus is much faster than a contrast detection autofocus, allowing for sharper images.
Nikon D3100
Nikon D70
Sony Alpha 7R III
32% have it

11. has built-in optical image stabilization

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.
Nikon D3100
Nikon D70
Sony Alpha 7R III
46% have it

12. has AF tracking

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.
Nikon D3100
Nikon D70
Sony Alpha 7R III
72% have it

13. higher resolution (screen)

A higher screen resolution provides a sharper image, making it easier to review your photos.
230k dots
Fujifilm X-T1 + XF 18-55mm F2.8-4 R LM OIS: 1040000k dots
130k dots
1440k dots

14. Has timelapse function

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.
Nikon D3100
Nikon D70
Sony Alpha 7R III
16% have it

15. has a microphone in

A microphone port allows connecting external high-end or specialized microphones.
Nikon D3100
Nikon D70
Sony Alpha 7R III
26% have it

16. has a built-in HDR mode

It can automatically shoot pictures with a higher dynamic range (HDR).
Nikon D3100
Nikon D70
Sony Alpha 7R III
27% have it

17. has a 24p cinema mode

24p is a video format (24 frames per second) traditionally used in cinema. Nowadays, it is used to create film-like motion characteristics.
Nikon D3100
Nikon D70
Sony Alpha 7R III
27% have it

18. Weather sealed

Device is protected with extra seals to prevent failures due to any kind of weather.
Nikon D3100
Nikon D70
Sony Alpha 7R III
20% have it

19. has a two-stage shutter

A two-stage shutter is good for taking photos like a pro; apply pressure to the button in order for the lens to focus, and then press it fully to capture the photograph.
Nikon D3100
Nikon D70
Sony Alpha 7R III
54% have it

20. has a touch screen

You can operate the device easily, by pressing the screen with your fingers.
Nikon D3100
Nikon D70
Sony Alpha 7R III
25% have it

21. has manual shutter speed

This allows to manually set the shutter speed.
Nikon D3100
Nikon D70
Sony Alpha 7R III
48% have it

22. Has a built-in focus motor

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.
Nikon D3100
Nikon D70
Sony Alpha 7R III
18% have it

23. can be controlled remotely

A remote control allows you to control the device remotely. The remote control can be included or optional.
Nikon D3100
Nikon D70
Sony Alpha 7R III
45% have it

24. has continuous autofocus when recording movies

When recording movies they stay focussed and sharp.
Nikon D3100
Nikon D70
Sony Alpha 7R III
66% have it

25. volume

880.1cm³
Sony Cyber-shot DSC-TX66: 65.29cm³
1229.36cm³
732.3cm³

Top 10 cameras

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