What is camera film?

Question 1: What do you mean by Apple mobile phone photos and camera film? Camera film is a photo library.

Question 2: What does the camera film look like? Before the popularization of digital cameras more than ten years ago, traditional cameras were all shot with film. The most common film is 135 SLR camera. The film is celluloid (the material for making table tennis) with holes punched at both ends. The surface is coated with a photosensitive layer, so the seal is rolled in a metal tube, as shown below.

This is the world-famous Kodak film. The company invented the digital camera, and then it was swallowed up by the tide of digital cameras. The traditional film industry has declined rapidly and just declared bankruptcy two years ago.

This is the Fuji film of the famous Fuji company.

A well-known domestic brand ―― Le Kai film.

This is the film in a traditional camera, and the back cover is not fastened. Have you noticed the two rows of holes punched in the upper and lower sides of this film? This is convenient for the camera to roll the film forward through the gear to take a picture, and the gear rotates to roll the film forward one by one. This is how the traditional film camera works.

Question: What's the difference between iPhone camera film and photo stream? Change your mobile phone and the photo album will be gone. Photo stream will save it automatically. If you change your Apple phone, the photo album will exist. As long as there is a wireless network, photo stream will automatically save it.

Question 4: What is the unit of camera film? If the unit of 135 film of an ordinary camera is one film, Quan Huafu film camera is allowed to shoot 36 films with 135 film and 72 films with half-frame camera. A roll of 120 frame film is 12 (the imaging part is 6CM high and 72CM in total length, that is, 6X6 is 12, 6X7 is 10, and 645 is 16). If it's 135 film, an ordinary camera will do. There are many units of film, one frame is equal to 1/2 135, and the time is also 24 frames per second (a roll of 135 photographic film is only 3 seconds long on the film machine). The above is personal information. Please correct me if there are any mistakes.

Question 5: Camera film 100. What does 200 mean? In traditional film cameras, ISO stands for the standard of photosensitive speed. In digital cameras, the definition of ISO is the same as that of film, representing the photosensitive speed of CCD or CMOS photosensitive elements. The higher the ISO value, the stronger the photosensitivity of photosensitive materials. The calculation formula of ISO is S=0.8/H(S sensitivity, h is exposure). As can be seen from the formula, the higher the sensitivity, the lower the requirements for exposure. The exposure speed of ISO 200 film is twice that of ISO 100. That is to say, under the same conditions, the exposure time of ISO 200 film is half that of ISO 100 film. In digital cameras, the number of light sources and the value of picture brightness can be changed by adjusting the equivalent sensitivity. Therefore, the sensitivity has also become a value that indirectly controls the brightness of the picture.

In the traditional 135 film camera, the equivalent photosensitive value is a measure of the sensitivity of the camera film to light, which is usually expressed by ISO number. The larger the number, the stronger the optical rotation. Commonly used expressions are ISO 100, 400, 1000, etc. Generally speaking, the higher the sensitivity, the thicker the film particles and the worse the magnification effect.

The traditional camera itself has no sensitivity, because sensitivity is only a quantitative sign of the sensitivity of photosensitive materials to radiation energy under certain exposure, development and testing conditions. Anyone who has used a traditional camera knows that the most important index of film is sensitivity-in layman's terms, it is to measure how much light is needed to complete accurate exposure of film. We bought100,200,400 films in the camera shop, and the numbers represent the sensitivity. Sensitivity is generally expressed by ISO value. With the increase of this value, the sensitivity of the film to light increases, so that it can be shot in different light. Movies like ISO 100 are most suitable for outdoor shooting on sunny days, while ISO400 movies can be shot indoors or in places with poor light, such as early morning and dusk.

However, because the camera is different from ordinary cameras, its photosensitive device adopts CCD or CMOS, so there are corresponding requirements for exposure, and there are also problems of high and low photosensitive sensitivity. This is equivalent to a certain sensitivity of the film. In order to facilitate the understanding of digital camera users, digital camera manufacturers generally convert the sensitivity of digital camera CCD (or light sensitivity) into the sensitivity of traditional film, so digital cameras have the saying of "considerable sensitivity".

Judging from the measurement of film sensitivity, at present, the photosensitive valves of digital cameras are distributed in the middle and high speed range, the lowest is ISO50, the highest is ISO6400, and most of them are around ISO 100. For some digital cameras, the sensitivity is single, and the sensitivity tolerance of CCD is very small, which limits their use effect in the case of too strong or too weak light. Other digital cameras have a certain sensitivity range, but even within the allowable range, the shooting effect is different if the sensitivity is set high or low, so we should put the best sensitivity in normal shooting. Like traditional cameras, low ISO values are suitable for creating clear and soft pictures, while high ISO values can compensate for poor lighting environment.

When the light is insufficient, the use of flash is inevitable. However, in some cases, such as exhibition halls or performances, if it is not allowed or convenient to use flash, the brightness of photos can be increased by ISO value. Because of the adjustability of ISO value of digital camera, sometimes we can only reduce the use times of flash by increasing ISO value and increasing exposure compensation. Increasing the ISO value can increase the brightness, but it may also increase the noise of the photo.

Generally, 200 is better.

Question 6: What is the shooting effect of camera film in WeChat? Can be compared, the color is obviously different, more retro and more textured.

Question 7: What's the difference between the camera film of my photo stream and the iphone5s? Photo stream will take up another space, but he is not a photo. Because the space occupied by other photos, when the space of your mobile phone becomes smaller, you can delete photo stream without affecting the original file, and the film is a negative, which can be developed after the photo is processed. The two have nothing to do with each other, understand? Mobile phone code word is not easy, I hope it can be adopted! thank you

Question 8: What's the difference between the camera film in my photo stream and Apple's mobile phone? Photo stream is a photo uploaded to the Internet. This can be turned off. If it is not turned off, the mobile phone will automatically upload the contents of your mobile phone to icloud for backup, and photo stream is the uploaded photo.

Question 9: What do the camera film in the photo in Apple's mobile phone and my photo stream mean? They all have the same photo? This is a kind of cloud storage provided by Apple. When you link to a wifi location, the photos you take will be backed up to your icloud. You can download the backed-up content by logging in to icloud on your Apple device. Of course, you can also turn off photo stream on your phone. If you don't want it, you can turn it off in Settings -iCloud- photo stream.

Question10: What's the difference between the photos of iPad 2 and camera film?

1: camera film, photos taken with ipad2 equipment.

2: photo stream, that is, photos synchronized with itunes or icloud accounts.

IPad 2 is the second generation of Apple's iPad series. 201/kloc-0 was officially released on March 3rd, and was listed in the United States on March 1 1. 2011was listed in 26 other countries on March 25th, and China was listed on May 6th.

Apple iPad 2 supports a variety of wireless communication standards, including Wi-Fi, UMTS, CDMA, optional 3G functions, or a combination of the three.

Compared with the previous generation, iPad 2 is thinner, lighter and faster, and has front and rear cameras. The iPad 2 uses a lighter carbon fiber material instead of the original brushed aluminum case.