With 100% coverage you can compose the image correctly when you capture the photo. With less than full coverage you may have to crop your photos afterwards to get them looking perfect.
An electronic viewfinder (or EVF) is a small display showing the image. Benefits of these over optical viewfinders include: they show more of the image, they can be more compact, focusing is easier with digital zoom, and they can also sometimes have extra info on the display, eg. a live histogram.
A higher screen resolution provides a sharper image, making it easier to review your photos.
Fujifilm X-T1 + XF 18-55mm F2.8-4 R LM OIS
A hot shoe can be used to attach an external flash, as well as light meters, viewfinders, rangefinders and other attachments.
The bigger the screen size is, the better the user experience.
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.
Canon EOS R
23.5 x 15.6mm
The larger the sensor the more light the sensor captures yielding in better image quality.
81.2 x 25.4mm
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.
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
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.
1080 x 60fps
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.
2160 x 60fps
When recording movies they stay focussed and sharp.
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.
A stereo microphone allows to record audio files or movies in stereo without an external microphone.
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
Panasonic Lumix DC-TS7
CIPA is an independent, standard measurement that determines how many shots a camera can take before the battery dies.
The battery is removable and can be replaced by the user if broken.
The battery can be recharged and used over again.
An indicator shows you when the device has low battery.
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.
A remote control allows you to control the device remotely. The remote control can be included or optional.
GPS enables global positioning, useful in map, geo-tagging or navigation apps.
Newer USB versions are faster and have better power management.
Devices with a HDMI or mini HDMI port can transfer high definition video and audio to a display.
An accelerometer is a sensor used to measure the linear acceleration of a device. A common application is detecting when a device changes between vertical and horizontal positions.