What is the difference between SLR and film? What is the principle of SLR film machine?

It seems that shooting with a film camera is easy, but processing images is more troublesome, right?

It is not easy to take pictures with a film camera. There is no mode for taking pictures with a film camera. Before taking pictures, you should mainly consider the film, whether to use light film or daylight film (color temperature), reversal film or negative film, fast film or slow film (sensitivity). After loading the film, the operation of the film machine is very simple. There are not as many buttons as the current digital machine. The dials of the film machine are all numbers. They mainly adjust the sensitivity and shutter speed. There are aperture ring, focus ring and zoom ring on the lens. , if the camera is compared to a computer language, then the film camera is the C language. The operation is very random and can give full play to your imagination. Of course, the premise is that your technology is good enough. Film is also post-processed, and darkroom technology is even more colorful than today's PS. You can mix the ratio of potions according to your own wishes, adjust the angle of the enlarger, modify the base plate with scissors or razors, and color the base plate with a brush. Even hundreds of plates are put together to enlarge photos with extremely high definition. In short, the photographer's idea is their own PS.

Must have a darkroom? Can it be plugged directly into the computer?

To develop film, you must have a darkroom, and only red light can be used in the darkroom to prevent the film from being exposed. Film machines do not have USB interfaces because they are not needed. Some film machines do not even use a power supply and are completely mechanical.

Can Nikon d7000 capture that film feel?

The Nikon D7000 cannot capture the feeling of a film camera, so it can only be photoshopped in post-production. However, you can add some filters from the film camera era in front of the lens.

Can you tell me about the imaging principle of film?

The imaging principle of film simply consists of three parts: pinhole imaging, the refractive effect of the lens, and the silver salt effect.

Five hundred years ago during the Renaissance, people discovered the camera obscura effect, that is, small hole imaging.

The refractive effect of the lens was discovered by the ancient Romans. Scholars with poor eyesight discovered that through spherical glass, they could see blurry text clearly.

The silver salt effect was discovered by scientists in the 18th century, that is, silver salt will gradually turn black when exposed to sunlight.

The above three effects constitute the initial model of the camera.

How much does a good film machine cost? Which brand is better?

Nowadays, the price of film machines ranges widely, ranging from tens of yuan to several million yuan. Of course, those with tens of yuan are stupid film machines bought on Taobao, and those with several million yuan are collection-level. Can only be seen at auction, to Linhaff camera. In fact, there are many existing film cameras, most of which are scattered in newspapers, magazines, and photography studios. Although they have disposed of a batch of old film cameras, they will collect those classic models, such as the Nikon F series, Leica series, etc. The machine can produce good movies anytime you want. Many families also have film machines, but the quality is slightly inferior. Most of them are in the bottom of the box and are rarely used, such as domestic Erniao, Oriental, Ricoh, and Minolta.

Finally, coming to the topic, SLR and film are actually two different categories.

SLR is a single-lens reflex camera, including film SLR and digital SLR.

There were many cameras in the film era, and SLR was just one of them.

Let me list the types of film machines for you.

There are many types of traditional cameras. The ones I list below may be a bit confusing, but they are absolutely specific:

1.120 cameras, including dual-lens reflex cameras (Seagull 4), folding cameras ( Seagull 203), single lens reflex type (Great Wall DF).

2.220 camera uses 220 film, and the film length is doubled compared to 120.

3.135 cameras are currently divided into rangefinder cameras (Phoenix 205) and single-lens reflex cameras. Typical domestic cameras are Seagull 205, Oriental S3 (baseline rangefinder), and Great Wall SZ (clockwork output). chip type).

4. Half-frame camera, produced in the 1950s, still uses 135 film, but the size is 18*24mm, Ricoh auto half.

The 5.127 camera is a miniaturized 120 camera with a size of 4*4cm, represented by the German Rolleiflex 44.

The 6.126 camera uses 126 film, the actual picture is 28*28mm, and was later replaced by the 110 camera.

The 7.110 camera uses 110 film and has a size of 13*17mm. It replaced the 126 camera because the camera is very compact. Represents Pantex auto110.

8. Disc camera, mass-produced by Kodak in 1982, with a disc diameter of 2.5 inches.

9.16mm cameras, represented by the Meco 16SB produced in West Germany and the Japanese Minolta 16MG, were later replaced by the 110 camera.

10.9.5mm camera, using 8*11mm film, produced by West German Minox Company and Japanese Yashica Company, for use by special departments.

11. One-step imaging camera, successfully developed by the American Polar Company in 1948, can directly take pictures within ten seconds to tens of seconds.

12. Combined cameras, these cameras are huge and use 4*5-inch, 5*7-inch, and 8*10-inch films. Typical cameras include Linhaff Kardan series.

Except for the 120 camera and 135 camera, other models are produced in relatively small quantities and are highly collectible.

The above refers to the 1992 edition of the Photography Manual of China Photography Publishing House.

There are also lomo cameras, ID cameras, head-turning cameras, and cameras that specialize in taking group photos, so I won’t list them all.

Today’s digital cameras are all the same. They look similar to each other. They are divided into SLR digital cameras and compact cameras (rangefinder). In terms of frame, they are divided into full frame and half frame, so I won’t go into details.