The larger the sensor the more light the sensor captures yielding in better image quality.
23.2 x 15.4mm
Polaroid Snap: 81.2 x 25.4mm
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.
Sony Alpha a7 III: 693
4. continuous shooting at high resolution
Fast continuous shooting is useful for catching action shots.
Olympus OM-D E-M1 Mark II: 60fps
The maximum ISO at which the device still captures excellent quality images. Source: DxOMark.
Sony Alpha 7S: 3702ISO
6. has a flip-out screen
Flip-out screens are useful for doing tricky shots.
27% have it
7. 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.
Nikon D7500 + Nikon AF-S DX Nikkor 18-140mm f/3.5-5.6G ED VR: 1640000 ISO
8. image quality
A device's overall image quality score considers: color depth, dynamic range and low light performance. Source: DxOMark.
Sony Alpha 7R II: 98
9. longer battery life
CIPA is an independent, standard measurement that determines how many shots a camera can take before the battery dies.
Nikon D3x: 4400shots
10. video recording
1080 x 60fps
Canon EOS 1D X Mark II: 2160 x 60fps
11. Has WiFi
The device can connect to WiFi.
37% have it
12. color depth
The better a device's color depth the more color nuances it can distinguish. Source: DxOMark.
HP Photosmart R927: 42bits
13. has a stereo microphone
A stereo microphone allows to record audio files or movies in stereo without an external microphone.
50% have it
14. fastest shutter speed
A faster maximum shutter speed allows taking pictures of fast moving subjects without blur.
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.
72% have it
Sony Cyber-shot DSC-HX400V: 39mm
Sony Cyber-shot DSC-TX66: 13mm
24. 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.
15% have it
25. Can create panoramas in-camera
It allows you to take multiple photos capturing different parts of the scene, and then joins them together into a single photo.