The potential of digital photography cannot be underestimated
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The technology of digital photography has recently become a hot topic in the city.
In order to create more business opportunities, many printing companies and production companies have stepped into the field of digital photography. With the "one-stop" as a selling point, they have joined the digital photography in the existing service projects, from prepress to printing to postpress. All are inclusive, attracting customers and preparing for the market.
Looking at its potential and development trends, digital photography should be promising in the foreseeable future. For a company that is interested in investing in it and has no way to start, it is a first step to take a comprehensive understanding of the pros and cons and then make a choice.
The camera is divided into four categories
There are so many kinds of digital cameras on the market that you can see them. According to Martin Wong, head of digital photography production, in summary, digital cameras can be divided into four categories.
"The first type is a one-shot digital camera, and the rest are three imaging cameras, multiple imaging cameras (one, four, sixteen imaging three-in-one) and scanning back (Scan back)."
He explained that the characteristics of an imaging camera is that it can be imaged only once, and can be used to capture the dynamics of the target, but the photos taken may be hit by a net. "There are a number of tiny photoreceptors arranged on the CCD to form a mesh structure of RGGB, but there is a certain gap between the color and the color. If the processing is not good, the captured image will have a strange color or a circle-like object. The skill of the manufacturer to write the program is closely related. The perfect program can avoid the problem of collision netting, but there is no manufacturer to eliminate such problems, which is why the photographer has finished shooting and needs to process the image."
"Multiple-imaging digital cameras can solve the collision problem. For example, the principle of the four-time imaging camera is to shift the CCD one frame after one imaging, so that each cell can repeat the same color exposure to fill the light. The gap between the colors of each body."
"Multiple imaging cameras solve a lot of problems, but on the other hand, they also have a lot of problems. For example, it requires a stable light intensity, that is, the luminosity of each flash output needs to be the same, there can be no error. Suppose the first The secondary exposure flash output is 100%, the second is 98%, and the third is 95%. When the images are overlapped, the color will be deviated. In addition, it can't record motion pictures.
"Similarly, the quality of three imaging cameras is also good, but the limitation is that motion pictures cannot be taken."
"As for the scanning back, it is similar to the scanner, because it scans the image directly, instead of scanning objects such as film, slides, prints, etc. Its principle is that the image is projected by a 4×5 camera to the CCD scan, which can be scanned. To a very detailed image, but the problem is that motion pictures cannot be taken, and the scanning takes a long time, which takes an average of five to ten minutes. The scanning also requires a special light source, Continuous Light. You cannot use a normal flash."
Must understand color management
When asked about the advantages and disadvantages of various types of cameras, Martin said: "Each camera has its advantages, otherwise manufacturers will not launch it in the market. People should choose the actual needs when they choose." He said: " For example, you have always taken portraits. The camera that was imaged four times or sixteen times, I just gave it to you, and you don't need it."
Martin stressed: "In fact, all cameras are similar in terms of hardware, because everyone uses the same technology as CCD." As for why two digital cameras using the same brand of CCD will produce different photographic effects, he estimates that this may be The camera has a good heat dissipation function, but it is more likely that the software is as comprehensive as the program written by the manufacturer.
Speaking of future trends, Martin believes that a digital camera with multiple imaging and multiple imaging has potential and should become the mainstream of the future. But no matter what, the quality of the images output by all types of digital cameras can add up to the traditional film.
He continued to point out that due to the cost and market demand, many experts have begun to accept this technology. However, some experts are afraid that the processing of the files from RGB to CMYK will not be handled well. The quality of the photos is even worse. Dare to transform. "Some fluorescent colors, digital cameras can be photographed, can be seen on the screen, but is there any way to print them out, or can they still be maintained after switching to CMYK, depending on whether the user has knowledge of color management, whether Master the skills of the ICC Profile."
But he also did not forget to add: "Of course, in some cases, ICC will have problems. If 90% of the entire picture is not printed, ICC can't save it because it can only be used. Control the color of the part."
The machine also looks at the purpose
Gary Wong, the sales manager of Creo, has the same opinion on how to choose the right digital camera. He said: "Users need to know their purpose. If the photos are only used online, they will not be placed very well. Large, digital cameras with a few thousand to 10,000 yuan are enough. If you want to use advertisements or catalogues to request high-resolution photos, you need to choose a professional-grade digital camera. Of course, the pixels are just One of the rings, the camera's bit (bit) number and heat dissipation function are also the focus. The general camera has 8bit pixels, the three colors together have 24bit, while the professional series has 48bit (three colors), the difference between the two is visible. Very large. Also, the CCD is very hot, so you should pay attention to whether the camera's heat dissipation function is sufficient when purchasing. If the function is not good, the quality of the photo will always drop when shooting 30 to 40 photos. If there is noise in the dark, etc., these are the things that users must pay attention to."
The demand for digital cameras is increasing in the market. Gary analyzes the reason why "the quality of digital cameras is better than before, and in the case of many years of introduction, customers have also changed from resisting to accepting." Although digital cameras and traditions The ratio of the camera and the traditional scanners is inevitably superior. "But considering that digital photography can save time and cost, customers still choose digital photography without considering the difference in quality." He added: "In fact, there are many aspects. Traditional film can't do it, but digital photography can do it. For example, in a darker environment, the film's dynamic range is only 2 to 3, but digital photography is Higher. If the photo luminosity is very insufficient, the image captured by digital photography will be wider and wider when the computer is tuned."
In the past, there has been a problem that digital cameras cannot shoot super wide angles, and they have now been resolved. Gary pointed out: "In the past, most digital cameras were used with 120 or 4 x 5 cameras. Now some improved 135 cameras can be directly connected to the back of the digital camera. Since the CCD size of a typical digital camera is 24x36mm, it is close to the 135 film. If you put a 135 film-sized CCD into a 120 camera, it is very difficult to achieve super wide angle. But if you put it in a 135 camera and use it with a 135 super wide-angle lens, you can solve the above problem." No wonder Gary estimates that In the next one or two years, more than half of the traditional photographers will switch to digital cameras.
Is the digital camera more expensive?
There is a price that reflects the quality, the higher the price of the product, the quality is guaranteed. So the same reason, can it be applied to the digital camera body? The answer is yes. Alpha
Mr. Leung said: "The price directly reflects the product's level or function. For example, the cheapest Olympus E20 is priced at about $15,000. Its function and quality are naturally only at the general level. It should only be reported by reporters in newspapers and magazines. For example, the Kodak DCS760, which sells for 60,000 yuan, has a pixel of 6 million and can be used for general fashion photography. Another example is the Kodak DCS Pro Back of 16 million pixels, which is priced at 170,000 yuan, which is enough to meet all types of requirements. Commercial photography. When considering the price, you may want to know the scope of your application to purchase the most suitable digital camera."
The problem is endless
With the development of technology, the problems of the digital camera part have been solved satisfactorily, but the so-called "needle has no two benefits", some solutions will also create new problems when solving problems. For example, Mr. Liang Yaodong, head of Alpha Channel Advertising Production Co., Ltd.: "An imaging camera calculates the color of a Pixel in the future by Pixel. Occasionally, the image taken in error may be wrong due to calculation errors. There are two methods of correction. One is to use the Quantum Mechanic Pro program correction in Photoshop, and the other is to use the AA filter (Anti-aliasing Filter) to solve the problem of collision nets, stains, etc. However, the AA filter has the disadvantage of reducing image sharpness. After correction, other software is needed to increase the sharpness. If a large amount of photos need to be processed, it will take a lot of time to correct. In fact, until now, there is still no perfect product on the market, so we accept a product. The advantages of the company also need to accept its shortcomings."
Mr Leung continued: "Many traditional photographers are worried about whether they have the ability to handle digital imaging. But in fact, the difficulty of digital photography lies in photography, not in digital. Because photography is a profound knowledge, but digital. The problem, many manufacturers have actually solved the problem for the user in the morning. For example, the manufacturer will preset the color standard in the program. Basically, we can get the normal image with one button. But of course, in special cases, Photographers also need to deal with some special colors such as neon or gold, which require the photographer's sophisticated control technology to make the color of the image perform better."
"A mature photographer must have color correction skills. In the field of digital photography, color management is a more complex issue. Now every camera manufacturer has launched its own ICC profile, which is enough for most photography colors. Corrective work."
Work more than before
If the photographer has to take into account the color management work in addition to shooting, then their burden has increased invisibly?
In this regard, Mr. Liang does not deny. "Digital photography will undoubtedly bring new trouble to photographers, and the photographer's work will increase. For example, photographers now need to change the file format and correct the color of the image. If the photographer is shooting a large fashion photography event, it is often necessary. It takes a lot of time to process 100 to 200 image files, but I feel that only by actively equipping myself, can we avoid being eliminated if we continue to solve problems for our customers."
Speaking of the replacement of traditional photography and digital photography, Liang believes that digital photography will completely replace traditional photography in the next few years, but traditional photography technology will not be forgotten. "Because digital photography is also based on traditional photography, it adds the elements of how to deal with digital imaging. Most importantly, photographers can make their own style."
"I am worried that people are too late to enter the field of digital photography. After a while, when everyone is fully mastered of this technology, it will be too late to learn."
Coincidentally, Martin also pointed out: "You don't take the first step, and everyone in the world will do it, and then you will follow it afterwards. I am afraid that it will not be able to catch up."