Taken early in the morning or evening

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Q: I just bought a SLR camera, but found with SLR in the early morning or evening is less than the photographs I have taken effect with the card machine. This is why?

A: Most machines have a special card sunrise / sunset mode, can be prominent early in the morning or evening sky the rich colors change. In fact there are a few digital SLR cameras have similar features. However, using the camera built-in shooting modes, while deprived of the fun of our control, the other can not achieve the best results.

 

One hour before and after sunrise and sunset sky, colorful, urban lanterns. In order to achieve the best shooting results, first of all should choose to reduce picture noise at low sensitivity setting, and then use a smaller aperture to ensure depth and picture clarity. As a result, the shutter time becomes longer, you must use a tripod. Camera's automatic metering system not very useful in this case, it is best to set the camera to manual mode, the shutter from 30 seconds to start shooting, then shoot on the LCD screen the results of changes in shutter speed. When the shutter speed more than 30 seconds, the door must be shot using the B, then in order to avoid camera shake machine, you must use shutter release or remote control. Cloudy or cloudy white balance setting can enhance both the sunset or the dawn of the golden yellow light. When the sun below the horizon when using incandescent or fluorescent white balance mode, both to better demonstration of the sky blue.

 

 

Best aperture

 

Q: Best aperture the lens is what the concept? How should I use it?

 

A: The lens at maximum aperture and shoot out of something difficult to achieve very sharp, and in the f/16 to f/32 aperture range of this small, diffraction sharpness will be affected. Each lens is the best or the most sharp iris aperture is not always the same, but usually at f / 8 or so. Switch the camera to aperture priority mode, you can set the camera's aperture value corresponding to the optimum aperture size.

 

Optical image stabilization

 

Q: just start up a optical image stabilization lens. But the pictures are fuzzy in some places clear in some places, this is why?

 

A: The anti-shake function can effectively eliminate the fuselage vibration, but the subject's movement is completely powerless. Assuming slow shutter speeds for handheld shooting a landscape of fallen leaves, tree trunks and other static objects are very clear, and the fluttering of leaves will become blurred. You want the dynamic solidification leaves, it is necessary to improve the camera's sensitivity to ensure a higher shutter speed.

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The whole site or APS format

 

Q: want to buy a SLR camera, but I and the whole site is some hesitation between the APS format cameras. What are their respective advantages and disadvantages of it?

 

A: The full frame sensor camera 135 film size and quite conventional, and APS format cameras sensor size is based on APS film frame system designed to be smaller. Choose what size of camera depends on your main shooting subjects. Considerable time equivalent focal length, full-frame camera is more shallow depth of field, the most for portraits, etc. need to use a large aperture virtual background, highlighting the main theme of the film.

 

Currently, full-frame camera choice for wide-angle lens is still more abundant than the APS camera, which makes full-frame camera has become a landscape photographer's love. But now designed specifically for APS cameras, more and more wide-angle lens is also up. The main themes of the shooting sports photographers, the Canon EOS 7D or Nikon D300S APS format cameras such as the top is their best choice to bring the cutting frame factors can significantly extend the equivalent lens focal length, for example, will a Support lightweight 70-300mm zoom lens extended to the maximum equivalent focal length 480mm or 450mm, which for photographers with limited budgets is particularly valuable.

Why is my photo gray?

 

Q: bought a Canon 550D, very satisfied with most of their shooting. But I have some photos taken under the sun looks gray, which is why?

 

A: This is likely to blame Canon's auto-exposure optimization. This feature can compress the dynamic range of the screen to ensure high light does not appear dead white, shadow detail does not appear lost. Now it seems that most Canon cameras that feature on the effect of the default settings are overdone. Because of its high light inhibition effect of light and dark is too obvious to mention, it has seriously affected the overall image contrast.

 

If you want to use this feature, it is best to set the effect of the weak, or simply turn off this feature to get a more stable shooting results. The best solution is to use RAW mode shooting, so to optimize the function of auto exposure and intensity of setting on whether or not our final shot would not have any real impact on the results. We can use Adobe amera Raw RAW processing software, or other high-control picture light, dark and overall contrast. Because the RAW format is the photoreceptor of the original image data logging, machine parameter settings will not affect the information.

 

 

 

 

Handling space

 

Q: see the article "RAW processing more space," the reference, can I explain what this particular concept?

 

A: The camera records pictures in JPEG format when the contrast is usually will strengthen the photos, so photos look more brilliant that this part of the image highlight and shadow detail may cause some damage. But this part of the RAW file details, for example, may have been lost in the JPEG format of the sky, the highlight detail can be found in the RAW file.

 

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Polarizer limitations

 

Q: bought a circular polarizer, want to use it to pressure the dark sky, but the actual use that it looks like only a small part of the sky in the work area, which is why?

 

A: The circular polarizer orientation is very sensitive to light, when shooting the sky, the sun was a 90 angle with the best. For ordinary lens, the best results should be able to cover the entire screen. But if you use wide-angle lens large area of ​​the sky, it may be a part of the sky region was more obvious phenomenon.

I need to use Picture Style settings?

 

Q: I have completed shooting on the computer will work a lot on my post-processing operation, I still need to use the portrait, landscape and other Picture Style settings?

 

A:: If you need your own computer for later editing, so really no need to use Picture Style settings, but we can not ignore their advantages, for example, skin color portrait mode will usually be slightly optimized, and scenery model will emphasize the blue and green screen, and to increase the sharpness to make the picture clearer. This way you can save a lot of post-editing work.

 

The best solution is to use the RAW format shooting, and then use the camera software to open the original RAW file, the editing stage, the Picture Style option on the decision or not. Photoshop CS5 included with Adobe CameraRaw 6.x has a similar function, but the original software and compared to purely mere copycat.

 

 

 

 

To ensure accurate metering

 

Q: Why do I adjust the seat ahead of focus and composition in the case, there will always light the wrong problem?

 

A: If you first focus on the dark prospects, and then shoot camera at the sky, this problem does not make people feel surprised. The end result must be a serious over-exposure, dead white one. Canon digital SLR camera will lock focus and lock the exposure value, even though the Nikon digital SLR can also be adjusted to lock focus after exposure to a limited extent.

 

In fact, this problem is easily solved. First, the camera at the required footage metering, hold down the AEL (AE lock) button to lock the exposure value required for shooting. Then adjust the camera, half press the shutter button halfway to focus, and finally re-adjust the camera flight composition, shutter release. This exposure will not be able to ensure that every problem. If you see the results on the LCD screen or bright or dim side, you can change the exposure compensation to re-shoot.

 

 

 

Phenomenon in the stripe print

 

Q: out of the picture on the ugly stripes, how to avoid such a phenomenon?

 

A: The photo on the occasional relatively faint lines or scratches, mainly caused by clogging print heads. Obstruction caused by the nozzle generally have two cases, one will not be used, the ink dries plug nozzle; Another is the use of paper media or in the cutting surface is not smooth enough, when prone to broken scraps of paper. Avoid such a situation the best way is to regularly clean the nozzle in order to achieve good working condition, while keeping the environment clean and working environment must be humidity.  Panasonic DE-994A Battery Charger

 

Basically high-end printers now have the automatic mode to solve these problems. Such as the Epson Stylus Pro 9910 large format printer, it's automatic nozzle check and cleaning can ensure print quality. Automatic nozzle drop detection system uses advanced detection technology charge, to eliminate errors caused by clogged print nozzles. Check the nozzle just less than 15 seconds, without any medium, takes only a very small amount of ink. In order to avoid nozzle clogging, can set the printer to print unattended, in between all the work automatically detected. If you find that plug, even if partially blocked, the nozzle will be self-cleaning.

Recently, the entry-level DLSR substantial price cuts, led directly to many of the original DC want to buy high-end home friends want to turn to DSLR. But for now, many newcomers to the DSLR forum do not understand, there are different degrees of concern. In response to this situation, the author of the differences between DSLR and DC to do a more detailed presentation here. Toshiba E131735,E198444 Laptop LCD Inverter

 

DC first DSLR and given the principle of two differences, in order to facilitate subsequent elaboration.

 

Principle one, (D) SLR's viewfinder and DC / imaging optical path difference

 

First talk about the SLR cameras, single lens reflex camera, full name, the English abbreviation SLR. It is called "single-lens reflex" camera, because it's optical principle:

 

The figure only understand two key:

1 single lens: the lens is in front of the camera (not nonsense, dual camera with two lenses: one for viewing, one for imaging).

2 reflection: see optical path A and B, light entering the lens, go through the mirror (red logo) a reflection, through the prism of the top five (red logo) of the secondary reflector and projected to the viewfinder.

 

So called "single-lens reflex" camera. The only difference is that digital SLR film location by the CCD / CMOS replacement.

Because of these two key reasons, so the following two conclusions directly:

1 SLR are looking at the income, pictures and the viewfinder image seen the same, there is no * aberration (be explained later);

2 reflectors without the exposure, has been closed, the light can not reach the CCD, it can not DSLR LCD viewfinder can not video.

 

* For explanation of aberration

 

Household DC (including traditional fool machine), see through the viewfinder and the actual imaging range is not uniform, pictured above principle. We call it "next to the viewfinder axis", next to the axis of framing the benefits is the ability to greatly simplify the camera's internal structure. Aberration when shooting the more obvious the closer, the farther the more you can ignore. However, due to the presence of aberrations, most photographers do not abandon this strict framing. DC current home of the LCD viewfinder is the CCD, so there is no difference.

 

Principle two, DSLR shutter structural differences and DC

 

As we all know, the traditional us of mechanical camera shutter, the shutter opens for exposure of the film, not when the exposure of film blocking protection. Acer Aspire 5000 Laptop Cooling Fan

 

DC's first talk about the shutter structure.

 

DC using the electronic shutter, the principle is to control the switching circuit to get the CCD exposure time equivalent (electronic shutter has the advantage of easy access to a high shutter speed). At the same time there is a mechanical shutter DC, but this is not like a traditional mechanical shutter used to control the camera as the exposure time, but only just to play a * block (behind a different meaning) role.

DC have to mention here, the CCD imaging process.

 

When shooting in DC, DC mechanical shutter has been open. Allows light to enter the CCD, making the signal sent to the LCD, for through the LCD viewfinder. In the exposure before the mechanical shutter is closed once the first * block the action, so that a CCD dark current record (to make the information stored on the CCD can be reset), then open the mechanical shutter, the CCD of normal exposure, mechanical shutter and then turn off, do signal processing, and then after the mechanical shutter open to viewing by the CCD.

 

By comparison, DSLR using mechanical shutter and electronic shutter with shutter means (not entirely the case, such as older Nikon D100 completely mechanical shutter, and later D70 is the use of mechanical / electronic shutter binding mode (. DSLR in shutter speed is slow, mechanical shutter; shutter speed is high, the use of electronic shutter. DSLR mechanical shutter is usually closed, open only in the exposure we can use the following illustration shows the simple exposure DSLR and DC process differences.

 

Because of these differences, home DC's shutter lag is always greater than the DSLR.

 

A, DSLR than DC's advantage?

 

1.DSLR has a huge lens group, to meet a variety of film subjects, all levels of the different needs of photographers.

Provides ultra wide-angle (fish eye from (to super-telephoto lens on the quality of all the focal lengths the lens ring, which is unmatched by DC; even if DC has a high power zoom lens, but do not forget to increase the zoom range, while sacrificing the camera image quality and maximum aperture, which is why many do not want to use the Photographer, "a mirror world" reasons.

 

2.DSLR large CCD image sensor brings a high signal to noise ratio.

Large CCD allows much less interference between pixels for the image quality to provide a strong guarantee. Some friends think: DSLR big selling point is the CCD, the manufacturers hype means. And in reality, follows the traditional digital SLR SLR models because, if the SLR using the CCD size is too small, will lead to SLR lenses will not work "applies." If a small size CCD, digital SLR will not be achieved wide. Therefore, the use of large CCD SLR structure is necessary, not the manufacturers hype means.

 

In other words, if given the large household size SLR DC loaded on the CCD it? Indeed, the image quality is improved no doubt, but probably increase the price more than doubled, and so the camera could not locate on the market: domestic prices too high, dedicated scalability is too bad, the result no one is interested. Hitachi VM-BPL27A Battery Charger

 

Expensive than the SLR, but the CCD. Traditional SLR Nikon F75 (D70 prototype) only 1700RMB, Prosumer F80 has only 2700RMB, the entry-level D70 digital SLR has to 6700RMB. (Of course, your failure is out of the CCD)

 

Second, on the vision for the future of digital cameras

 

Point of view, with the LCD viewfinder has no aberration, DSLR's reflex viewfinder is not necessary to retain

 

Let's take a look at the drawbacks of the LCD viewfinder:

 

(1) LCD viewfinder is very much power.

(2) LCD viewfinder automatically adjusts sensitivity according to intensity of light, so shooting from the actual findings are inconsistent, especially when in low light.

(3) LCD viewfinder requires mechanical shutter has been opened, resulting in the exposure action cumbersome, to extend the shutter lag is not conducive to shooting and capture.

As the defects (2) the existence, in many cases had to resort to the optical viewfinder; but on the DC side and there viewfinder axis aberrations, which brings to the film can not solve the problem.

 

So from now appears to retain reflex viewfinder is necessary.

 

Second point of view, DSLR cameras are not the Terminator

I agree with this view hold the attitude. Is present, the type of digital camera digital SLR is not the only one, there are 120 DC and other forms of digital backs, only one of many different types of digital cameras of different scope. They have their different market position.

 

Look DSLR's CCD (including DC), the color of light the CCD is not the ability to identify, only increased by a low-pass filter before the CCD to sense different colors (R, G, B), red, green, blue closely packed in three colors, CPU and then restore it, according to the interpolation algorithm to get the image, so the camera just outside the digitized analog signal, not the complete record, so the current and traditional cameras, digital camera imaging gap still exists.

 

Is there a better way to improve the digital camera to improve the accuracy of the analog signal to imitate the outside it? The answer is yes, such as used in professional video camera 3CCD technology. 3CCD 3 CCD technology is used to shoot were perceived as the RGB three colors of light, according to chromatic Full color image synthesis algorithm. But to achieve 3CCD technology, the current DSLR's internal structure and the DC can not meet (after the intercept of the lens limits), this camera structure will be completely changed, and the previous SLR camera will no longer apply. The CCD / CMOS which direction future development, now do not know. Perhaps now look forward to full frame size of 135 by then already can not meet demand.

 

Bring new structure not only changes the parameters of the body, affecting the more I am afraid that lens manufacturers lenses. Nikon, Canon, Tamron, Sigma and other lens manufacturers, spend a few years to have become a large-scale general-purpose lenses, if passed by the new SLR camera models to replace, then means that the required replacement of the lens manufacturer line content, re-develop a series of new models for the lens group, this may be how long? 2 years? 5 years? 10 years? Or longer? Panasonic Lumix DMC-FX550 Battery Charger

 

DX said on a wild good, we play photography, should be from the "selfish" departure, rather than from the "against him" Go. The so-called "selfish" and "against him," that is, a choice for our creative use of the camera, for us to use, but not because of the current camera technology is not mature enough and do not (such as DSLR), even worse, that buying a DSLR is a test for the DLSR manufacturers, from the ideological *** DSLR; so think people end up waiting all day long. As the saying goes, "Pro-Yuan Xian fish, as retreat net", that is the truth.

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Digital Camera symptoms are manifold, the problems for different models, which will have specific methods to solve some minor differences. To sum up, but nothing more than the following categories. 

1, the camera image when the income poor. This failure generally can be divided into three cases, one is shown in the viewfinder image and the TV is not ideal, leading to the reasons for this failure is usually in the camera circuit; Second, the viewfinder image normal and the TV show bad image, in which case AC adapter or failure is usually caused by poor line connection; third is the TV image viewfinder image normal and bad reasons for this failure is usually caused by a viewfinder. 

2, the image color is not natural. If the tape monitor records the image normal and five color or color negative, in general, failure occurred in the video section: On the contrary, if the tape recording monitor image is not normal and normal, was caused by AC adapter or a bad connection. If both are negative, the fault in the camera circuit. 

3, image blur, focus is not good. If the manual focus well and auto-focus poor, often malfunction in the automatic focusing circuit. If the manual and automatic focus are bad, the fault mainly in the lens focusing components. 

4, no audio playback images.  HP Compaq Pavilion 2500 Laptop LCD Inverter In such cases, can be taken with a tape recorder into the common normal replay, monitor sound effects. If the sound normal, the fault in the AC adapter; the other hand, failure in the audio and microphone recording microphone circuit or circuits. 

5, the machine does not work. After booting the keys had no role in the viewfinder no light, the box body does not work. Such power failures are usually caused by abnormal or power circuits. Should first check the battery voltage or AC AC adapter output voltage is normal, if normal then the fault in the power circuit. 

6, tape handling failure. Viewfinder and monitor can be displayed the image when shooting, but the tape is not loaded into or take it out. Such failure generally occurs in the movement and its drive circuit. 

Inspection methods 

According to the initial symptoms to determine the fault location, the next point of failure should be further in-depth search. Structure of the integration of sophisticated digital cameras, many components, so in order to find the fault as soon as possible, the search was impossible to test components individually. To this end, can make use of electronic equipment in the following way to find out. 

1, the comparative method. The normal equipment and faulty equipment to be compared, and then find out the fault. Can make use of test equipment associated with test points on the voltage, current, resistance, and waveforms were compared, can quickly search to the exact point of failure. 

2, the displacement method. Canon PowerShot S80 Battery Charger  Borrowed parts of the normal replacement of equipment failure on the suspicious device components to quickly find the failure. This method can be easily used in the replacement of the circuit board or connectors. 

3, the points system. Search Select a partition testing when the fault coverage point is divided into two parts, and through the failure of the test points to determine which part of the range in which the. And then from the failure to determine the scope of the test, choose a split point, the fault coverage further divided into two parts, and then through the test site to further determine the fault coverage, and so on, fault coverage shrinks rapidly, and can quickly find the point of failure . 

4, open circuit and short circuit. Circuit when the fault tracing method used, tend to have a multiplier effect. It should be noted that the open circuit and short circuit method is not suitable for certain circuits, such as high-voltage power circuit and the circuit is not short circuit. 

5, the human body sensor method. Search the use of human failure, the most convenient source of noise into the noise signal to the test point is often the method used. This method is simple and rapid characteristics, but must pay attention to safety, to prevent accidental touch pressure points. 

Notes 

1. Image quality is very important when purchasing specifications. Video camera image resolution refers to the level of resolution as a yardstick. The more lines, the image clearer. 

2. Zoom performance camera represents the flexibility is another important indicator. Optical zoom lens focal length by the change to zoom, better, buy the bigger the better, of course multiplier, usually several times optical zoom ratio to 20 times in between, some models of camera can also double the optical zoom lens to increase magnification . 

3. How many functions are also an important indicator of the camera purchase. In addition to the clock settings, various operating settings and other essential functions, Samsung M310W Battery Charger  as well as picture effects, digital editing, fade, etc. are almost all models is necessary for the camera. 

1. Focal lengths 

Often hear people ask DSLR camera lens "is several times", please note that this is extremely amateurish question is asked. The birth of digital cameras, Acer DFS551305MC0T Laptop Cooling Fantiny as the lens focal length to 135, with the traditional distinction between the lens focal length, so using a zoom instead of just saying that the actual focal length of the practice, this will make people forget the small focal length and small photosensitive area, which is actually a diversionary cover-up. However, using a 135 DSLR camera's lens, it is usually the actual focal length as the index, such as 17-85mm, zoom lens for this range that is 17mm ~ 85mm. If you insist on asking the lens is several times, then this is a 5x zoom lens. This conversion is far from scientific truth, the DSLR is interchangeable lenses, if put on 70-200 lens, then zoom less than 3 times, but the base is 70mm from the beginning, in fact, that support 5 times than the previous zoom lens to look further. Even consumer-level cameras, optical zoom to bring the final result is concerned with the initial base, not all the same multiple of the same view, so consumer-level camera is a vague concept multiples. 

 

2. Vice factory original lens and lens 

 

Like Canon, Nikon, Pentax DSLR body of the camera and other production companies, in order to correspond to the system produced its own DSLR camera, Panasonic VW-VBG260 Battery Chargercalled the original lens. Some manufacturers of professional camera provides a camera interface, the other lenses from different manufacturers, so that consumers have more choices, such as sigma (sigma), Tamron (tamron), Tokina (tokina) and other manufacturers production of Canon, Nikon, Pentax and other camera interface, commonly known as party lenses. Of course, to refer to the deputy factory specialized lens manufacturers seems to be wrong, because the production of these professionals, many lens manufacturers lenses, the quality is not lost to the original lens, the price is much less than the original lens, as many in the the economy was not good choice for photographers seeking. 

 

3. Focal length conversion ratio 

In the current mainstream DSLR Although the size of photoreceptors than consumer cameras use a lot of big, Olympus Li-40C Battery Chargerbut not yet reached the 135 film size (unless it is full frame camera), so the camera lens mounted on the 135, the shoot out 135 images with the camera range will be different and usually must be multiplied by 1.5 times (Nikon) or 1.6 (Canon products). For example, when fitted with a 50mm Nikon DSLR lens, its view equivalent to 50mm × 1.5 = 75mm focal length perspective. But only a view equivalent to a focal length of the optical properties are not therefore change. Even consumer-level cameras in the propaganda known as the "equivalent to 135 cameras × × mm ~ × × mm", also refers only to a considerable angle, optical effect is not "pretty." 

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     Optical zoom pixels is true, it can be returned to the original scene, rather than what the mass loss of distant, but the digital zoom at the expense of image quality price. The more you use, the greater the damage, so the actual use, almost any digital zoom.

     Many traders big zoom digital cameras and professional, attached to, or even great quality zoom camera and a digital camera associated with the idea a bit too one-sided.

     Although the digital camera enthusiasts, attracting a large zoom is not very small, but there is little need to understand that size is not the most popular of the objective focal length, is the most important thing concerning the lens focal length range, generally, used to capture human focal length medium (85 - 135mm) is more appropriate, and will be shooting landscapes and buildings, with wide-angle lens effect to be larger (18-40mm).
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    high zoom digital camera is often not all fish and eat, because the big zoom camera depth of field is short, although the ability to highlight the theme, but the focus is slow, and that the focus accuracy high. Focusing on the small camera inaccurate, subject to create a vague (that is, as often as running Coke), as well as small spatial shooting scene, at the same distance, the image captured is narrower than a standard lens .Great wide-angle zoom camera has a tendency to serious side effects on circulation and image distortion. Since the great civil zoom camera costs relatively low, so the poor lens quality, it is difficult to focus on the different colored light, which is the spectrum of problems arising from the Deputy also. If there is no anti-shake feature games, while the light is slightly less than the use of shooting hand, it is very hard to ensure that your hands are shaking, it is just because the screen is blurred.