Canon EOS 1D X Mark II
Device is protected with extra seals to prevent failures due to any kind of weather.
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.
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.
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.
A hot shoe can be used to attach an external flash, as well as light meters, viewfinders, rangefinders and other attachments.
35.9 x 23.9mm
The larger the sensor the more light the sensor captures yielding in better image quality.
81.2 x 25.4mm
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
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
Newer image processors are better at processing multiple tasks simultaneously, and can produce higher quality images with better low-light performance and faster AF.
Canon PowerShot SX740 HS
2160 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
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.
When recording movies they stay focussed and sharp.
24p is a video format (24 frames per second) traditionally used in cinema. Nowadays, it is used to create film-like motion characteristics.
The higher the movie recording bitrate the better the movie quality with more and crispier details and less compression artifacts.
Canon EOS R
A microphone port allows connecting external high-end or specialized microphones.
More microphones result in better sound quality and enable the device to filter out background noise.
Canon EOS 200D
With a standard mini jack socket, you can use the device with most headphones.
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.
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.
GPS enables global positioning, useful in map, geo-tagging or navigation apps.
Devices with a HDMI or mini HDMI port can transfer high definition video and audio to a display.
Newer USB versions are faster and have better power management.