Teach you to choose the type of camera lens.

Lead: the photosensitive element of digital camera can convert light into charge, and the charge is converted into digital signal through analog-to-digital conversion chip. There are two main types: one is the widely used CCD (Charge Coupled Device); The other is CMOS (complementary metal oxide conductor) device. Small size and light weight, compared with analog cameras, DV cameras are much smaller, generally only 123mm? 87mm？ About 66mm, the weight is greatly reduced, generally only about 500 grams, which greatly facilitates the user's volume of only 74.7mm? 6 1.9mm？ 26.9mm, weighing only 90 grams, lighter than most mobile phones.

Teach you to choose the type of camera lens. First of all, according to the focal length.

First of all, it can be divided into two kinds of lenses: fixed focus and zoom.

The camera is used, and the zoom lens is mostly used.

For zoom lenses, what are the lens model parameters? Magnification? And then what? Shortest focal length of lens? .

For example:? 16*9.5?

The front is the multiple, and the back is the shortest focal length.

Multiply is the biggest zoom capability, which is also commonly known as the telescopic function.

The shortest focal length is the wide-angle ability and how wide it can be shot.

Zoom lenses can be divided into three types according to focal length:? Standard lens? 、? Wide angle lens? 、? A telephoto lens? .

1, standard lens

A camera should be equipped with a title, which is generally 14- 17 times the title.

The header is comprehensive, including? Part of the wide-angle focal length? 、? All the headlines? 、? Part of the telephoto segment? .

This is suitable for almost all kinds of shooting, so it is called? Header? .

2, wide-angle lens

Wide-angle lens, also called short-focus lens, is very powerful and can shoot a wide picture.

The commonly used wide-angle focal length is 4.5.

Wide angle is often used in news topic programs.

3, telephoto lens

A telephoto lens is used to magnify distant objects.

Generally, the telephoto is more than 19 times.

Telephoto lenses are mostly used to shoot dramas and MV programs.

If you often use, list, and special programs, the title will be fine. If you shoot a drama or an advertisement, you need a wide angle and a telephoto.

Second, press the lens bayonet.

We all know that camera photoelectric devices come in different sizes.

So the lens bayonet of the camera is different.

For example, our broadcast camera is 2/3 bayonet, and the small HD is 1/2.

Each camera can only use the lens corresponding to the bayonet and cannot be interchanged.

1, 2/3 standard lens

Usually used for broadcast cameras, it is a standard lens.

The lens is separated from the camera body and can be easily detached from the camera.

All 2/3 CD cameras can use this lens.

The main manufacturers of 2/3 standard lenses include? Canon? 、? Fuji? Two manufacturers.

Which is better, Canon lens or Fuji lens?

Comparatively speaking, Canon's lenses are sharper and have higher color saturation.

Therefore, the share of Canon lenses is relatively high.

2. Non-standard integrated lens

Mainly used for cameras with small high definition 1/2 and 1/3CMOS films.

The lens and camera are integrated and cannot be changed.

The main manufacturers are Sony, Panasonic and Canon.

The CMOS film of this camera is too small, so the lens is very important.

So we usually use the lens of a famous German factory.

Sony mainly uses Zeiss lenses, while Panasonic mainly uses Leica lenses.

But after Sony acquired Minolta, it began to use its own so-called? G lens?

And Panasonic also began to use its own 130 and 160? Specially designed lens? .

3. Non-standard detachable lens

Usually use small HD? Wide angle zoom lens.

That is to say? Lens? Generally, it is mainly wide-angle end. Restrict the use of cameras? News, special topics? Aspects.

No telephoto segment, make? Movies? 、? MV？ It's hard to shoot.

So the manufacturer has introduced some interchangeable lenses? Small HD? .

The small HD performance of interchangeable lenses is obviously better than that of non-interchangeable lenses.

The lens is also a German lens.