How many phases is equivalent to a camera that develops a traditional film process?

Generally, the resolution of the film shot by a 35mm SLR lens is more than 50 lines per millimeter, which means that 100 points can be recorded on the negative per millimeter.

In this way, the pixels of a 35mm film are 3600*2400. 8.6 million pixels.

If you use a top-of-the-line lens + film, there are also negatives with a resolution of more than 100 lines per millimeter. That's nearly 40 million pixels.

The highest pixel in a full-frame digital camera today is the Sony A900, with 24.6 million.

However, quality is not only a metric of the number of pixels, it is only a reflection of the ability to distinguish details. There are also many other important indicators such as noise, latitude, color reproduction, etc. It's like the ** quality of a 12 million pixel home DC shot is much, much worse than a 6 million pixel DSLR.

The resolution of the film is determined by the density of the silver salt dye. The cheapest 135 color negative film is equivalent to about 25 million pixels, and the resolution of professional portrait 135 negative and ultra-fine 135 black and white film is basically twice as high, or 100 million pixels. Photo Studio Professional photography uses 120 films, which can shoot in different formats, with the smallest 645 frames having about 3-400 million pixels.

Commercial art photography uses large-format negatives that are dozens of times larger than this value.

But these advantages are only manifested in the amplification ability, that is, it can be washed larger.

The pixel only determines the size of the image, and the sensor determines the quality of the clarity.

There are currently 50 million pixels (Hasselblad medium format cameras) and it is said that there are 300 million pixel cameras (which have only been seen in the news once). At present, there are 10 million pixel cameras on the market.

Film cameras don't have pixels, and the quality is determined by the film itself.

The general 135 negatives are equivalent to about 20 million phases, which is the kind we often buy on the market for about ten dollars. There is no comparison between professional negatives and cameras.

In photography, the phase element is not the most important parameter, if it is not the kind of group break photo with hundreds of people, 8 million phase elements within the camera is enough.

Film cameras can't define the number of pixels, because they can be washed very large without affecting the image quality, but even the best digital cameras can't do this, so in today's highly developed digital world, quite a lot of photographers still choose film cameras to complete their work.

The 135 digital camera with the largest pixel right now is Sony's 900 DSLR with 24.6 million effective pixels.

The largest pixel commonly found on the market today is a full-frame SLR with 25 million pixels, which is basically the same level for traditional cameras.

Eight million prime ones are enough

Film cameras don't have many pixels. Some high-end cameras indicate that the resolution of the center of the writing gelatin is how many lines can be resolved per millimeter and how many lines can be distinguished from the sides.

The pixels of a digital camera do not exactly represent its resolution. Some cameras are able to find test data for camera resolution.

What are the few digital cameras with the largest phases today? "There are specialized professional machines, and the CCD is larger than the 135 camera film, tens of thousands of units.

The word pixel was coined from the birth of the digital camera, and film imaging is the development of silver salt grains, and there is no such thing as pixels.

Film Camera Introduction:

Film cameras, that is, traditional cameras, film cameras are divided into monocular cameras and binocular cameras, and film cameras use only negatives.

As shown in the figure below, the lens assembly from right to left consists of a lens, a shutter, lens group 1, lens group 2, and a negative. The images taken are projected onto the negatives along this optical path.

The focal length adjustment system and shutter system in the assembly are composed of lens group 1 and an electronic shutter, which are connected together. Driven by the motor, the lens group 1 and the shutter can be moved back and forth to adjust the focal length for the sharpest image, with the shutter controlling the time.

Advantages of film cameras over digital cameras:

1. The latitude of the film.

When it comes to film cameras, what can make digital cameras the most enviable, the first thing to say is tolerance, although now SLR cameras have a good latitude in RAW format, but compared with film, these are nothing (exaggeration), on digital cameras, in high-contrast shooting, overexposure in the highlight part of the details are overflowing very heavy, so that there is a "dead white and dead black" situation, and on the film, there is no such situation, highlights and shadows retain quite sufficient detailsTheoretically, color film can reach 18 stops of tolerance, compared with the maximum 14 stops on digital cameras now, the gap is here, and even some black and white film, under high-contrast shooting, can obtain greater detail.

2. Unique film grain texture.

In terms of details, friends who have studied film may be more impressed, after the film is enlarged, although it is the same as a digital camera, there will be a little bit of grain, but unlike the irregular noise of digital cameras, the grain of film is very textured, and it will not feel abrupt.

3. Large-format photography.

Speaking of large-format films, I believe everyone knows a star, Chow Yun-fat, who is an actor and photographer who insists on playing with film, and in his equipment library, including large-format cameras, Kodak still retains the production line of large-format film for "Fa Ge". Today, on digital cameras, the largest size of the mass-produced single-chip image sensor is still not the same as the previous film camera, and the current largest digital camera image sensor is only Phase One medium format, which is equivalent to the 645 in the film camera is slightly smaller, and on the larger size of the sensor, such as the medium format of 17 and so on, the medium format of different formats, has not been reached, and there is still no large format, like 10 digital cameras.

Nowadays, it's basically a digital pull, which is more convenient. However, some commercial photography** that shoots commercials still uses film. Although it is troublesome to use, the quality of pixels and printing is still better.

The film has good tolerance, good texture, rich layers, etc.

In addition, after the film is scanned by high-grade bottom, there will be no mosaic phenomenon when magnified, and the lower the ISO, the more delicate the film, for example, the film of ISO100 is equivalent to 1600-2400W pixels.

ISO400 is equivalent to between 600-1600W pixels.

Because there are specifications such as film and width, the specific value of the photosensitive silver salt particles should vary depending on the type and size, as well as the limitations of the film manufacturing process.

In addition, the photosensitive particles required for specific images vary depending on the level, environment, and scenery being photographed.

135 film is equivalent to tens of millions of pixels in a digital camera.

The fact that film cameras don't have pixels can also be said to be infinitely large in pixels.

Pixels: To use a shallow analogy, if you draw a grid on a piece of paper, a grid is just a color, and then use all the grids on the paper to form a picture, then a small grid is a pixel

Strictly speaking, it is not called pixels, but the degree of fineness of the silver salt particles is equivalent to the number of pixels of a digital camera. Generally speaking, the degree of fineness of grain is different for different brands of film, and even if it is the same brand, it is also affected by the sensitivity and developer formula. I can only give you an approximate number, which is generally equivalent to 18 million to 20 million pixels in a digital camera.

Traditional film cameras have many advantages, and digital cameras cannot be completely replaced at this stage. For example: color restoration, clarity and delicacy of the image after high magnification, etc.

This is especially true for medium to large format cameras.

There is no formula for conversion.

So there's no digital comparison.

Also, why convince you that you can choose not to play.

The resolution of 35mm film is generally determined by the size of the film grain.

The size of the ultrafine silver salt can reach or even smaller, that is, one ten-thousandth of a millimeter, according to this calculation, 35mm film is 24 36 mm, then there are 240,000 360,000 pixels, that is, 8640000 pixels, of course, this is a theoretical value.

The 135 film camera is equivalent to about 10 million digital, that is, the maximum magnification to about 40 inches is not enough.

In large format, it is equivalent to tens of millions to hundreds of millions of pixels.

At present, it seems that the resolution per unit area of the image sensor of the DSLR has not exceeded the limit of the film.

No, the traditional film is also composed of fine silver iodide ions, and the clarity is related to the fine density of silver iodide ions, so it cannot be infinitely large. But now an 8-million-pixel digital camera is better than the traditional display.

Theoretically speaking, the traditional optical SLR camera, his pixels should be endless, but due to the factors of negative raw materials and printing equipment, a better SLR machine plus lens can make the first pixel reach 2000W to 3000W, and some professional-grade high-break SLR machines can reach 5000W.

Ordinary point-and-shoot optical cameras generally have between 600W and 1000W pixels.

The 800W pixel mentioned upstairs has a better display effect than traditional optical cameras, because digital cameras have the function of pigment optimization, which artificially modifies the imaging effect through technical means. It's hard to tell with the naked eye.

In this way, it depends on what kind of camera and what lens is used, and it cannot be simply compared with traditional cameras and digital cameras.

There should be a washing coke shop in the city, but there are relatively few of them. Film photography cannot be measured in pixels.

At Kodak, film doesn't matter the pixels.

Traditional cameras generally have tens of millions of pixels, which is roughly equivalent to between 11 million and 15 million pixels of a digital camera. The 120 camera is not easy to calculate because of the big gap in the specifications of the negatives, but it must be above 20 million. However, even if the digital camera has reached the pixel number of the traditional camera in terms of pixels, the current technical level in terms of color expression and level cannot be compared with the silver salt technology.

However, the quality of the camera can vary greatly on the results of the photos taken. A home digital camera is generally sufficient at 300 to 6 million pixels.

It is equivalent to about 3 million, but it is not the same as the 3 million of digital cameras, which are usually CCD lenses, the same is 3 million, but digital cameras are clearer.

Film has no concept of pixels, because its chemical particles are silver bromide molecules, so even billions of pixels are unreachable. Therefore, film production** can be infinitely magnified, except for blur points, there will be no mosaic.

Equivalent to 30 million. The 2nd floor is really a super layman.

The 3rd floor is even more homeless. You know what a bitmap is and what a vector map doesn't.

I use a Seagull machine, if you are a professional photographer, it is recommended to use a machine, the feeling of shooting is different from that of a digital camera. And traditional cameras don't have pixels, it only depends on the fineness of the silver salt grain of the film! In addition, the film can be infinitely larger, and the cost of CCD is very high if it is made larger!

shootit, you're a real layman!

For example, the camera function of a digital mobile phone is introduced like this: 2 million pixels.

In general: ** overall size 3 million size. It's clear.

If it's just for general household use, 8 million is enough!! The size of the pixel of 8 million is about 8m, and the pixel can be adjusted appropriately with Canon's and determined according to memory. And the sensitivity of the light, the close-up of the face is very good.

Film regardless of pixels.

But definitely not a vector, but still a lattice. It depends on the silver salt particles. The general standard of 135 is measured in billions. The higher the ISO value, the coarser the silver salt particles and the fewer pixels.

The resolution of the film is determined by the density of the silver salt dye. The cheap 135 color negative film is equivalent to about 25 million pixels, and the resolution of the professional portrait 135 negative and the ultra-fine 135 black and white film is twice as high at 100 million pixels.

Dangerous stones, don't talk nonsense, can you die? Also tm vector, do you know what it means?

How many pixels the scanner has, and how many pixels are scanned. Silver salt particles can be superimposed, so film has always been marked by grain size to indicate the fineness of the picture.

The image found by an ordinary camera is a vector image, which can theoretically be enlarged infinitely. What the digital camera finds is a bitmap, which has a pixel limit, and is microscopically spliced together by a lot of color grids, so it will not be clear after magnification.