What does a wide-angle lens mean?

Question 1: What does a wide-angle lens mean? Simple understanding: the field of vision is relatively large, the viewing angle is relatively large, and the viewing range is relatively wide.

Question 2: What is a wide-angle lens and what is a wide-angle lens?

The so-called wide-angle lens is a lens with short focal length and large viewing angle. The purpose of using a wide-angle lens is to obtain a wider field of vision and magnificent artistic effects. Wide-angle lens can produce large foreground and small foreground effects. The picture distortion produced by wide-angle lens exaggerates the foreground object, highlights the foreground object more, and gives people a strong visual impact. For consumer digital cameras, the so-called wide angle is actually 28 mm

To put it bluntly, the general camera can only see the area in front of you, while the photos of wide-angle cameras can let you see more and more pictures that can't be displayed at wide angles. The wider the wide angle, the closer it is to people's actual field of vision, and the more comfortable the photo looks, especially when shooting landscapes and other pictures.

What's the use of wide angle:

For tourism, the benefits of wide-angle lens are obvious. It can shoot a wider landscape and is very suitable for showing the beauty of the landscape.

Wide-angle lens is used to enclose a large photographic area, which is wider than the area without wide-angle lens and shoots more scenes than before.

The meaning of extending from focal length to wide angle;

According to the principle of photography, the smaller the focal length, the wider the field of vision, and the wider the range of scenery that a photo can accommodate. The shorter the focal length of the lens, the greater the deformation of the scene, but the perspective effect is good, which can better represent the depth of the picture and obtain a wide range of clarity, that is, the depth of field is greater. Some digital cameras make use of the feature that the scene can be clearly imaged after a certain distance with a short-focus lens (hyperfocal distance), which saves the focusing function, reduces the product cost and is also beneficial to snapshot.

For most popular digital cameras on the market, the wide-angle focal length is generally between 35 and 38mm. The real wide-angle digital camera is actually a product with a lens focal length covering a wide angle of 28mm. Because the wide-angle field of view of 28 mm is wider than that of 35mm and 38 mm commonly used in digital cameras, the wide-angle field of view of 28 mm is 76 degrees, while that of 35mm is only 62 degrees, so it can produce very unique visual effects and accommodate a wider scene. This is also the reason why consumers are more optimistic about 28mm wide-angle digital cameras. The biggest feature of wide angle is that it can shoot a wide range, with exaggerated sense of distance and wide focus range. When using wide angle, you can enlarge the object in front of you and narrow the object in the distance, and the surrounding images are easily distorted. Wide-angle can also adjust any point in the image to the most appropriate focal length to make the picture clearer, which can also be called complete autofocus.

Question 3: What does the wide-angle lens of SLR mean? What about wide angle? Is it the closest focal length? A 50 mm lens is called a standard lens. The viewing angle is generally around 44. Wide-angle Sichuan projection generally refers to a lens smaller than 50 mm, not the closest focal length. Is the biggest perspective. For example, 10.5mm in dx and 16mm in fx are both 180 degrees.

Question 4: What does wide angle mean? Wide angle.

The so-called wide-angle lens is a lens with short focal length and large viewing angle. The purpose of using a wide-angle lens is to obtain a wider field of vision and magnificent artistic effects. Wide-angle lens can produce large foreground and small foreground effects. The picture distortion produced by wide-angle lens exaggerates the foreground object, highlights the foreground object more, and gives people a strong visual impact. For consumer digital cameras, the so-called wide angle is actually 2 mm

Question 5: What does the wide angle of the camera lens mean? Wide-angle lens can produce the effect of big prospect and small prospect. The image distortion produced by wide-angle lens exaggerates the foreground object, highlights the foreground object more, and gives people a strong visual impact. For friends who like to travel, the benefits of wide-angle lens are obvious. It can shoot a wider landscape and is more suitable for showing the beauty of the landscape. The real wide-angle digital camera should be a product with a wide-angle focal length below 28 mm The larger this value, the more obvious the wide-angle lens is. Because of its short focal length and large viewing angle, it can shoot a larger area of scenery in a shorter shooting distance.

Question 6: What does a wide-angle lens and a telephoto lens mean? A wide-angle lens can accommodate more scenery in the lens. You have to shoot a lot of people, vast scenery and towering buildings. You can only shoot them with a wide angle. Generally speaking, the focal length is below 35MM (135 camera lens specification), and some people call it "super wide-angle lens" or "fisheye lens" below 20MM.

Wide angle is very practical in life. For example, if you want to shoot a collective graduation photo, you need a wide angle to get as many students into the camera as possible. A lens with a focal length of more than 35MM is "not enough".

The telephoto lens is to shoot distant objects and portraits. For example, if you want to take pictures of animal expressions in the zoo or birds on branches, you definitely need a telephoto lens.

For example, if you attend a concert and want to shoot a star, the compensation position is relatively low. At this time, a telephoto can help you. Let's just say it's like a telescope. Generally, the focal length is above100 mm.

Question 7: What does a high-definition wide-angle lens mean? Do you need me to teach you?

Question 8: What do wide-angle lenses and telephoto lenses in digital cameras mean?

The imaging quality of digital cameras,

In addition to the lens quality,

Largely depends on the pixel level of the imaging chip.

The lar that number of pixel,

The higher the pixel level,

The higher the resolution of the image,

The more pictures are displayed.

Exquisite,

I see,

Well organized.

The pixel level of low-end digital cameras is usually low,

Only a few hundred thousand pixels;

High-end digital cameras have a high pixel level.

Most of the pixels are above 6.5438+million.

The higher the pixel level and resolution.

The higher the grade and price of the camera, the better the imaging quality.

Digital camera: optical zoom

The English name of Optical Zoom is Optical Zoom.

Digital cameras rely on optical lens structure to achieve zoom.

The optical zoom mode of a digital camera is similar to that of a traditional 35mm camera.

It is to zoom in and out the scene to be shot through the movement of the lens.

The larger the optical zoom factor,

The farther the scenery can be photographed.

When buying a digital camera, many users will ask

What is digital zoom,

What is optical zoom?

Optical zoom is achieved by changing the position of lens, object and focus.

When the image plane moves in the horizontal direction,

Vision and focal length will change,

The scenery in the distance becomes clearer,

It makes people feel that objects are progressive.

Obviously, there are two ways to change the perspective.

One is to change the focal length of the lens.

In photographic terms,

This is optical zoom.

The focal length of the zoom lens is changed by changing the relative position of the lens.

The other is to change the size of the imaging surface,

I.e. the diagonal length of the imaging plane. In the current digital photography,

This is the so-called digital zoom. In fact, digital zoom does not change the focal length of the lens.

Changing the viewing angle only by changing the diagonal angle of the imaging plane leads to

"Equivalent" to the effect of lens focal length change.

So we saw some digital cameras with long lenses,

The internal lens and photoreceptor have more room to move, so the zoom factor is also larger.

We see that some ultra-thin digital cameras on the market generally have no optical zoom function.

Because the root in the fuselage does not allow the movement of the photosensitive device,

Like Sony F828,

Fuji S7000 these

"Long lens" digital camera has 24 times optical zoom function.