Digital single lens reflex getting started thirteenth class histogram (histogram)

In some high-end consumer-level digital cameras, there are many practical features, the DSLR in the use of machine back LCD preview photos, with additional display histograms (histogram) functionality, this functionality can help us use order regulating the distribution of graphics, to observe a photo intensity distribution ratio. The histogram is displayed on the LCD waveform parameters to determine photo exposure in some high-end consumer-level digital cameras, there are many practical features, the DSLR in the use of machine back LCD preview photos, with additional display histograms (histogram) functionality, this functionality can help us use order regulating the distribution of graphics, to observe a photo intensity distribution ratio. The histogram is displayed on the LCD waveform parameters to determine the accuracy of the photo-exposure, many high-end tool for the camera in the camera's time will be able to see the live histogram, this shooting is very good help. Through the horizontal axis and vertical axis histogram can be clearly judged photographs or viewfinder picture exposure. We know that digital camera relative to the traditional film camera a very big advantage is that the shoot, shoot photos instantly to LCD LCD for playback see effect. But now the camera frequently is 400 million pixels, and these cameras are equipped with LCD screen often only the hundreds of thousands of pixels, so this small LCD LCD cannot be fully demonstrated the details of shooting photos. Especially because the LCD for light and less sensitive, many photographs even hourly or underexposed by LCD can hardly reflected, here we are going to make use of many digital camera built-in "histogram display" function to determine whether the pictures taken exposure. First look at the histogram reading. The horizontal axis of the screen, the representative of the Ministry of light and darkness of the screen, the more we rely on the left side of the darker, more to the right is the more light, that is, the whole picture of the direction of regulating in the right hand, shadows in the direction of his left hand, and midtones is located in the middle of the site. A better figure should be light and detail are, on the bar chart is from left to right are distribution, at the same time both sides of the histogram is no pixel overflow. While the vertical axis of a histogram would indicate that the corresponding portion of the screen area, the higher the intensity of peak values for the number of pixels.

If the histogram is displayed only on the left, shows the portion of the screen not bright, Dim, there may be underexposed.

But if the histogram is displayed only on the right there is a lack of dark picture, description details, is likely to solarize.

In the histogram portion of the vertical axis represents the regional distribution of the number of pixels, the lower the pixels less, more high pixel will be more.

From the horizontal axis and vertical axis of the distribution, we can generally see a photo of its intensity distribution about what kind of situation.

The following look at the various different photos of the histogram.

Pixels are concentrated in the area specified, significant exposure transition a pixel mean of distribution in each region, the exposure is good like are concentrated into the dark, underexposed

In General, a good exposure of the photos, it's histogram allocated should be light and quite average, so that the proportion of the whole picture will be appropriate and shade.

But sometimes if we want to take some bright tone (so-called high key) or dark tone (the so-called low key) of the photos, but you will need to adjust the intensity distribution of weight.

This is the dark tone of photography for the performance of the gloomy feeling this is a light tone of photography, the screen looks fresh and bright

The histogram can be used to help us understand the exposure is good or bad, and the transfer of a photo was taken.

There are many novice when using DSLR will go overlooked this feature is quite unfortunate that one thing. Remember the next time you take pictures, many use the histogram to view picture of light, which can increase our exposure to grab sensitive with accuracy. Histogram to show underexposed, so the player can adjust the exposure compensation, in the digital camera on this process can be very intuitive quickly reflected in the final results we can immediately see. In addition, the histogram is also capable of displaying overexposed, we can make the appropriate compensation, the camera through the narrow aperture or increase the shutter speed to reduce exposure. Exposure compensation is in metering system is difficult to make accurate judgments when an adjustment means that some objects and scenes are very difficult to adopt accurate exposure metering system processing, such as snow, often resulting in underexposed, to comply with the concrete ' reduced exposure compensation principles generally will be able to take out exposure accurate photos. For a real-time histogram machine, we shot the histogram information before, you probably know the site is a photo of exposure conditions, saving valuable time in shooting.

Digital SLR entry-level series of tutorial:

Digital single lens reflex getting started tutorial first class equipment ready articles (1) digital SLR getting started tutorial lesson materials prepared articles (2) digital SLR getting started tutorial lesson three aperture digital single lens reflex getting started tutorial lesson four shutter digital single lens reflex getting started tutorial lesson exposure digital single lens reflex getting started sixth class depth of field digital single lens reflex getting started tutorial lesson focus digital single lens reflex getting started tutorial lesson eight speed digital single lens reflex getting started tutorial ninth class exposure compensation digital single lens reflex getting started tutorial tenth course spot digital single lens reflex getting started tutorial 11 extracurricular received Flash digital single lens reflex getting started tutorial 12 course basic composition of a digital single lens reflex getting started thirteenth class histogram (histog

Ram) digital SLR getting started tutorial fourteenth course manufacturing on the depth of field methods