Parameter setting process of SLR camera

Parameter setting process of SLR camera

As a novice photographer, how to set SLR parameters? The following is my teaching of SLR parameter setting skills for you, hoping to help you.

Parameter setting process of SLR camera

1, take a close-up of something that is still very small, such as flowers, birds and insects;

When using Av files, the aperture should be below f5.6 and the focal length should be above 50. Try to shoot the blurred background within 1m!

Iso100 if the light is good; If the light is not good, iso is better within 400.

2, shoot people:

Basically, we use a larger aperture (within f5.6) and a focal length of more than 50 mm The shooting distance depends on the whole body, chest circumference and large photos, so the background is blurred and Av files are used!

Good light, iso 100, poor light, within iso400.

People in motion use chasing to express their sense of motion (see the shooting of moving objects below for details)!

Step 3 shoot:

For Av files, use an appropriate aperture, above f8, and the focal length is arbitrary, but generally the wide-angle end is distorted, so use it as appropriate.

4. Look at the night scene:

Install tripod, Av gear, custom white balance or incandescent lamp. Aperture above f8 and small aperture can make the light show starlight effect. Use the pre-lifting function of reflector to reduce the machine vibration caused by the lifting of reflector after pressing the shutter. Cover the viewfinder with a square cover on the strap to prevent stray light from entering from behind and affecting the image quality; Within iso200, let the exposure time be as long as possible, let some people who have no intention of walking disappear from the picture, leave no trace, and purify the scene!

For example, if you take a photo of a square, you can use a very small aperture of about f20, iso 100, so the exposure time will be very long, so the walking figure will not stay in the photo! The square will be clean!

5. Set off fireworks:

Using the cable release and B shutter, you can shoot the effect of multiple fireworks overlapping!

6, shoot running things:

Good lighting: Av files, aperture size should be handled properly; A large depth of field effect can be obtained with an aperture above f8, and a shallow depth of field effect can be obtained with a small aperture.

If you want to shoot a very dynamic effect, you can use a TV file. The shutter is about 1/30. When you press the shutter, the lens moves behind the object at a suitable speed, which will produce a very dynamic effect!

Poor lighting: only handle it as appropriate, plus the use of chasing!

7, shooting running water or fountain:

Using TV files, the shutter speed is about 1/50, and the satin effect can be taken. If you use the shutter too fast, the fountain will shoot discontinuous water droplets!

8. Portrait at night:

On the tripod, adjust the white balance, automatic or custom white balance; iso 100-400； Av file, aperture f8 or so, adopting slow synchronous flash and Hou Lian flash mode; At this time, the flash will flash twice, press the shutter to flash once, and it will flash again before the exposure is over, so people should not leave before flashing twice.

This can make the characters clear and the background neon beautiful, so that the background will not be underexposed or too dark.

Av aperture priority skills:

1. Whatever you shoot, don't shoot with the maximum aperture unless you want to keep the safety shutter.

2. Please try to use the aperture of F8~F 1 1 when shooting scenery.

3. When shooting close-ups of people and still life, the maximum aperture can be reduced by 1~2.

Please try to control the safety shutter above the reciprocal of the focal length. The wide-angle shutter should also be above 1/30 seconds. If the shutter is insufficient, please increase the aperture or ISO.

Photometric method:

1. Don't point to the sky, don't point to the darkest place. Grab the middle value.

2. Make good use of measurement methods (weighing measurement, point measurement, center key measurement ...) according to the subject matter you shoot.

3. If you are not sure about photometry, please use AE lock to expose the surrounding gray things before shooting.

4. Try not to measure the light of white or black objects, otherwise please remember to subtract EV from black and add EV to white.

EV is exposure compensation.

Exposure compensation is also an exposure control method, generally around 2-3EV. If the ambient light source is dark, you can increase the exposure value (such as+1EV, +2EV) to highlight the' clarity' of the picture.

Most small digital cameras adjust exposure compensation through menus.

In the process of digital camera shooting, if you press the half shutter, a picture similar to the final effect will be displayed on the LCD screen, and all focusing and exposure will start. The exposure at this time is the exposure of the final picture. If the picture is obviously bright or dark, it means that the automatic metering accuracy of the camera has a big deviation, and exposure compensation should be forced, but sometimes the brightness displayed during shooting is different from the actual shooting result. Digital camera can browse the picture immediately after shooting, and at this time, you can see the brightness of the shot picture more accurately, and there will be no discrepancy. If the shooting result is obviously bright or dark, it is necessary to shoot again and force exposure compensation.

When the shooting environment is dark and it is necessary to increase the brightness, and the flash can't work, exposure compensation can be carried out to increase the exposure appropriately. When making exposure compensation, if the photo is too dark, the EV value should be increased. Every time the EV value increases, it is 1.0, which is equivalent to doubling the light input. If the photo is too bright, the EV value should be reduced. Every time the EV value is reduced, it is equivalent to doubling the amount of light entering. According to different cameras, the compensation interval can be adjusted in units of 1/2(0.5) or 1/3(0.3).

When the photographed white object looks gray or not white enough in the photo, it is necessary to increase the exposure, which simply means "the whiter the more". This seems to run counter to the basic principles and habits of exposure, but it is not. This is because the camera's photometry often focuses on the central subject, and the white subject will make the camera mistakenly think that the environment is very bright, so it is underexposed, which is also a common problem that most beginners are prone to make.

Because the shutter time or aperture size of the camera is limited, it is impossible to reach the adjustment range of 2EV all the time, so exposure compensation is not omnipotent, and it is still possible to underexpose in too dark environment. At this time, it is necessary to consider matching the flash or increasing the ISO sensitivity of the camera to improve the brightness of the picture.

Generally speaking, the smaller the brightness contrast of the scene, the more accurate the exposure, otherwise the deviation will increase. There are high and low grades of cameras. If the grade is high, the measurement will be more accurate, and if the grade is low, the deviation will increase. If it is a traditional camera, the film tolerance is relatively large, and the exposure deviation will not be a big problem within a certain range, but the CCD tolerance of a digital camera is relatively small, and a slight exposure deviation may affect the overall effect.

In a word, the adjustment of exposure compensation is determined by experience and sensitivity to color. Users must compare the image quality, sharpness, reduction and noise under different exposure compensation in order to take the best photos.

Learn to adjust the parameters of SLR camera in 7 minutes

1- shutter &; hole

Shutter speed and aperture are two basic parameters of SLR cameras, and they are also two terms that beginners should first understand.

Shutter: The so-called shutter speed, in layman's terms, is the time from pressing the shutter button to the end of shooting, that is, the light entry time. The longer the time, the more light, and the brighter the photo. Professionally, when the shutter is pressed, the mirror turns up, the shutter blade opens to make the photosensitive element photosensitive, and when the shutter blade closes, the photosensitive element stops photosensitive. This time interval is called shutter speed, or shutter for short.

Aperture: Generally speaking, the aperture is the size of the light entrance. The greater the light input, the greater the light input per unit time, and vice versa. In the lens, there is a circular aperture with variable aperture. This structure is called an aperture.

The relationship between shutter and aperture is like a faucet. Without considering other factors, at the same time (the shutter is fixed), the faucet with large aperture produces more water (large aperture and more light). Similarly, a faucet with the same aperture (fixed aperture) will produce more water (the slower the shutter, the more light).

This also explains why some novices take dark photos when using M mode, because there is too little light in the aperture and shutter, so the brightness is extremely low and even looks very black.

Use selection:

Large aperture, shallow depth of field, blurred background. Increase shutter speed under the same conditions.

Small aperture, deep scenery and clear front and back. Reduce the shutter speed under the same conditions.

Note: In M mode, the exposure index is the index to judge whether the brightness of a photo matches the reality. The first indicates that the brightness is too high, the third indicates that the brightness is too low, and the second scale value is 0, indicating that the photo is consistent with the actual brightness. Of course, you can choose darker or brighter colors according to different needs.

2- Shooting mode selection

Before taking pictures, you must first choose the appropriate photography mode. How to choose the mode? What models are there? Every SLR camera has a small circular turntable, and each letter or number on this turntable represents a different photography mode. Generally, all SLR cameras are equipped with M, A, S and P, which is also the most commonly used photography mode we need to understand first.

M: Manual mode, users can adjust the shutter speed and aperture according to their own needs. Generally, when there is enough time, choosing M mode can not only feel the fun of professional photography, but also take specific shots.

Answer: Aperture priority is automatic. When the user selects the aperture, the system automatically selects the shutter speed to achieve the best effect. This mode is suitable for shooting that needs to change the aperture frequently to achieve focus or change the depth of field.

S: Shutter priority is automatic. The user selects the shutter speed, and the system automatically selects the aperture to achieve the best effect for locking or blurring.

P: The program is automatic, similar to automatic shooting. Shutter speed and aperture are automatically adjusted by the system to achieve the best effect, which is suitable for taking snapshots.

Other modes are scenes set by cameras. Different cameras provide different scenes and are not commonly used. This article will not explain them one by one. It is suggested that beginners take M mode as the main learning content.

3- Adjustment of other parameters

ISO sensitivity: this function is mainly used to assist exposure. The higher the ISO value, the higher the sensitivity. For example, when shooting indoors or on cloudy days, if the aperture and shutter adjustment cannot meet the normal exposure, the brightness can be enhanced by adjusting ISO. However, the higher the ISO value, the more noise there is in the photo. Therefore, when shooting outdoors, the lower the ISO, the better, and the photos will be very delicate. In short, the principle to be followed is that ISO can be as low as possible and should not be improved as much as possible. Suggest sunny days 100 or 200, cloudy days 200-800, hand-held and night snapshots 1600, tripod 100.

WB White Balance: The adjustment of white balance can realize the color reproduction of different scenes, and different cameras also have different icons and parameters, which will be introduced in the next topic. Novices can choose automatic, and automatic recognition can satisfy normal shooting.

Photometry: The machine is used to judge the intensity and brightness of light. Nikon and Canon cameras have different metering methods and types.

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