How do professionals choose digital cameras in the face of transformation?
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Hong Kong's economy has fallen sharply. Enterprises of all sizes are facing an unprecedented war. The war is like the final round of the boxing match, and it has reached the stage of winning and losing. With the transformation of value-added, it is a trick to determine the outcome. The pre-press industry has taken the initiative to expand the scope of services, of which digital photography is the source of one-stop service. But for many experts, it is a brand new technology that is difficult to grasp.
In the market, there are many kinds of professional digital backs, each with its own characteristics, and the price is not cheap. Experts are generally worried about the mistakes made by the choices and the loss of customers. Therefore, I would like to share with you my many years of experience in using digital cameras for reference.
Digital camera backs can be divided into two broad categories:
1. Scanning back (Scan Bed)
This is like putting a scanner on a technical camera and scanning the image directly. The advantage is that it can take a very large image file, and the image is very clear and detailed. The best scanning back can shoot 380MB of image files, which can be enlarged at will, which is comparable to the effect of 4×5 positive film. It is suitable for the most rigorous broadcast art painting, and is the highest image environment tool for digital camera back. However, the disadvantage is that the scanning time is long and it is not suitable for mass production. When scanning for a long time, the subject may move again, creating a new problem in production, and the light cannot use the currently popular flash, so it is not used by the average photographer.
2. Can use the flashlight back
Another very popular digital camera back is the use of flash as a shooting tool, and this back can be divided into two types, one shot and multiple shots. The principle of single shot is to dye the CCD into three primary colors of red, blue and green. In a single flash, you can capture the three original colors at the same time, and then use the software to calculate the image, suitable for shooting moving objects. This is the main technology of all digital cameras, but because the CCD is dyed, the red, blue and green colors are each It takes one-third, so there is a compromise in resolution. Some images also produce Color Aliased stains and image moiré, in order to solve the above problems, so the phenomenon of multiple flash exposures.
The latest multiple flash function is to move the CCD for multiple exposures, so that the CCD can capture image elements in different positions, so the image data is sufficient, Color Aliased stains and image moiré will be greatly reduced, and some will reduce the workload on photography. You can choose one, two or three flash exposures, so that photographers can freely determine the shooting method when they work.
The largest file of digital cameras
Now the latest technology can make CCD The size is reduced, that is, the same area can also be put into more CCD Pix, so that the image file is larger and the resolution is higher. Kodak's latest Pro The DC digital back is an example. In the 35.8mm square, 16 million CCDs can be placed, and the file size is up to 48MB, which can be used for larger output. However, because the size of each CCD is reduced, the color reproduction power is reduced, so it has only 12BitColorDepth. That Pro Compared with the 14BitColor model, the DC is inferior in color reproduction.
New generation photoreceptor
Of course, the most perfect design is 3CCD, such as Foveon II. They use three CMOS (another photoreceptor) for the same time exposure to capture the image in order to reduce the production cost. However, because there are no agents in Hong Kong and Asia, they can't test. And give you a more detailed report. CMOS is another photoreceptor that has been developed for many years beyond CCD. Its production cost is cheaper than CCD, color reproduction is high, resolution is clear, and the cost of digital cameras can be reduced to a reasonable level.
Creo Scitex, Leaf first introduced a 3150×2100 pixel CMOS digital camera back, which can match various popular 120 bodies. It is not only small and convenient, it is suitable for outdoor work, and the software can also cooperate with today's comprehensive digital production, which can reach the quality above the standard.
First agent quality
When choosing a digital back, people often reproduce the image, color reproduction or software functions, but the author believes that the quality of the agent is the most important. Imagine that the digital back is not like traditional photography tools. When an accident occurs, the agent has enough experience to solve the problem is the key.
Nowadays, all kinds of digital cameras have very good random software, and they all have their own characteristics. This is also a major consideration when we choose. It is important to note the direction of the color management elements that the user is familiar with. If the selector is only familiar with the use of RGB three original colors, and the software only provides CMYK color control, it is difficult for users to play their role in the software. But for the author, taking photos is ultimately going to print, so today, photographers should be familiar with the use of CMYK color to control the color of the image and the process of printing, to enrich the knowledge to cope with today's transformation.
Before buying a digital back, you must first consider the type of photography work. Because of the different products, they all have their own characteristics. For example, the work is only in the company studio, no need to shoot outdoors, the size of the body is not a big problem. However, if you need to shoot outdoors frequently, you should carefully select the back of the machine, the battery and the parts, so you must choose some light and durable models, such as the back of the machine can support Window's system, the laptop There will be more choices.
In the economic transformation, photographers are still skeptical about digital photography, so they rarely use computers for image processing, and they don’t know anything about printing. But I can tell you that although the printing color separation technology is very high. Learning, but the road ahead is what we have to face. It is right to treat with optimism and positive attitude. Because we have to know that the most important and most difficult thing in digital photography is photography, not digital technology. Light effects are more important than digital programs when working with images. The production company should not be taken lightly by the photography technology. Because the photographer is the image controller, the computer technician is not good. Many problems are solved first by photography, and then by the computer assistant, the image will easily achieve good results.