FOV (Field of View) is the field of view that the game camera covers in space. The higher the FOV value, the more you see around you, but the smaller, the better you can see small details in the distance.

A person has a very wide viewing angle: 

• 200-220 degrees horizontally

• 150 degrees vertical

At the same time, in games, the camera's FOV is usually: 60-90 degrees

How is it that with a FOV of 60 degrees, we feel the game in about the same way as with a real viewing angle of 210 degrees?

"The thing is that a person's eyesight is divided into 4 main segments: The vision that notices movements is about 160 degrees. The vision that separates colors is about 120-60 degrees. The vision that perceives shapes is approximately 60-10 degrees. The vision that can read text and focus is about 20-10 degrees." (c) Ashgdev

Thus, when playing with a 60 degree FOV, we don't lose a lot of information because:

• Most of our field of view is used to observe movement (160 degrees), which is also available at FOV 60.
• The central area of vision (60-10 degrees), where we distinguish shapes and focus, remains unchanged.

It is worth noting that everyone's eyesight is different, so perception may differ. It is also necessary to take into account that the eyes have an offset of 30 degrees each, which increases the total viewing angle of a person.

As a result, a FOV of 60 degrees is a comfortable value for most players, providing sufficient visibility and not overloading vision.

It is important to understand that the camera in the game cannot fully reproduce all the features of human vision. It is limited to one focal length, which leads to some distortion. However, these distortions are not critical, and in general, players get a similar feeling from playing with FOV 60 and with a real viewing angle.

FOV (Field of View) is the field of view that the game camera covers in space. The higher the FOV value, the more you see around you, but the smaller, the better you can see small details in the distance.

The influence of FOV on the perception of the game is very great:

• Surrounding world: With a high FOV, you see more of the world around you, which can be useful in games where awareness of the situation is important (shooters, strategies). But if the FOV is too high, it can be difficult to focus on one thing.
• Aiming: Low FOV increases aiming accuracy, which can be useful in FPS. But at the same time, you will see less of the world around you.
• Movement: A high FOV can make movement smoother and more comfortable, but there may be a feeling of motion sickness.
• Speed perception: With a low FOV, the feeling of speed will be lower than with a high one. This can be useful in games where it is important to react quickly, such as racing simulators.

Example:

Imagine that your character is moving at the same speed along the corridor.

• At low FOV (60 degrees) you will only see a small section of the corridor ahead of you. This can create a sense of enclosed space and increase tension.
• At high FOV (120 degrees) you will see the entire corridor in front of you and even part of the rooms on the sides.  This can make the gameplay more comfortable and allow you to better plan your actions.

It is important to note that the influence of FOV on the perception of the game is individual for each player. Don't be afraid to experiment with different FOV values.

Successful use of FOV helps to enhance the immersion in the game and makes the gameplay more interesting and exciting.