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Share with you my experience in using digital cameras

digital! Number! Number! The world is entering the digital age, at least it looks like this. Let's see that the compact CDs made of black vinyl have been replaced by the compact ones; TV sets are developing towards digital high definition; In photography, the camera based on silver halide film is transitioning to digital camera

today I will try to introduce some tips about using digital cameras to you. You are very welcome to make suggestions and participate in the discussion. Let's make progress together

I Essential knowledge

what I want to emphasize here is the basic knowledge about digital cameras, which seemed to be less important in the past. But now it seems that they are essential before picking up the camera. Therefore, I would like to suggest you to accumulate some special shooting knowledge of digital cameras in your daily photography activities

1. Tolerance

I think the word tolerance will not be strange to people who like photography. I won't introduce it here. It is said that the tolerance of a digital camera is only equivalent to the amount of 11 aperture changes. If defined by medium gray, the bright part accounts for about three levels, and the rest are used to depict the dark part. Therefore, in terms of exposure control, we simply say that we should rather owe than overdo it. This feature is the same as our traditional color reversal film, but opposite to negative film, so friends who used to use negative film to take pictures and didn't have much contact with reversal film in the past must pay attention when taking pictures with digital camera. Four words, better owe than go too far

2. White balance

as we all know, we have two kinds of films to choose from when shooting with traditional cameras: indoor light and daylight. If there is a difference in color temperature, the created picture will be biased. When using a digital camera, white balance is more important. If the picture is saved in JPEG format, we can only adjust the color through PS on the computer, and it often cannot produce satisfactory results. So I suggest that you should pay attention to the light type of your environment before shooting. If possible, you should use the camera to aim at the middle gray or white to adjust the white balance before shooting. Such preparation is simple and practical

II Shooting skills

1 The diffraction effect of aperture and image quality

light will be more obvious on the digital camera. If the aperture of the digital camera is less than f/11, it will gradually be affected by the diffraction effect, and the definition and contrast of the picture will be reduced. If we set the aperture of our traditional camera at f/22 to ensure the depth of field is large enough, then when we use a digital camera, we'd better take f/16 as the minimum aperture limit

2. Careful cleaning

the defect that digital SLR cameras are sensitive to dust must give many film friends a headache. The image sensor and protective filter will leave marks on the picture after being stuck with dust. Therefore, we should take a more cautious attitude when changing the lens to prevent dust and ashes. Once you get caught, don't be nervous. In most cases, using ordinary blowers can solve the problem, but pay attention, you can't use pressure buckets or hairbrushes. If blowing the nozzle can't solve the problem, it's better to melt it instantly and send it to the maintenance center. You know, The materials that make up the sensor are too fragile: (

3. High resolution and phantom

the pixels are getting higher and higher, so we should pay attention to the stability of the hand when taking photos. Why? Let me explain this problem below. If the image taken with a 6million pixel digital SLR camera is displayed with equal pixels, it is equivalent to expanding the photo to 40 inches. We know that when using a traditional camera, when the photo is expanded to four or five inches, there will be no problem with the picture. However, when it is 7 inches, 10 inches or more, the virtual shadow caused by hand shaking when taking photos will be clearly exposed. How big will the picture frame produced by the 6million pixel digital SLR camera we just mentioned?! How serious will the virtual shadow be?! Therefore, it is suggested that photographers should pay attention to this problem when taking photos. If when using a traditional camera, our "safe" shutter speed should be one second of the "focal length", then when using a digital camera, we should shorten the shutter time, that is, one second of twice the "focal length". For example, if your focal length is set at 50mm, in order to get a picture without virtual shadow, we should try to keep the shutter at 1/125 second when the charging time is less than 8 minutes. Of course, it also depends on the camera skills of the photographer. If you are a master or want to achieve special effects, it is another matter. If the shutter time is less than 1/60, it is recommended to use a tripod

4. Focusing

auto focusing is very convenient and has been widely used. However, the auto focusing system on digital cameras is still based on the accuracy of traditional cameras. Therefore, when the taken photos are viewed on the computer monitor, we still occasionally find that the focus is not accurate, that is, the orientation and relaxation of the melt is a sweating problem - Virtual shadow! Another phantom! This problem is easy to solve. It is usually more accurate to use manual focusing. If it is not automatic, then my suggestion is to take two or three more shots at the same stand

5. File storage format

finally, the pictures we took are stored. Most of today's digital cameras save the pictures in JPEG format, because the pictures in this format take up small space and are easy to use, but the disadvantage is that it will degrade the picture quality and there is no way to set post-processing parameters. Let's take a look at the file in raw format. It can change post-processing parameters at will, and the picture quality is much better. The disadvantage is that the file takes up a lot of space and takes a lot of time to process. Therefore, if you want to be convenient and fast, then choose JPEG format. If you want to pursue image quality and produce a good work, I suggest using raw format

well, let's talk so much first. I hope you can get something from it that is conducive to improving your shooting level. Finally, take photos. Practice is the best way to learn. (end)