Basic technology of SLR photography

Have you learned the basic skills of SLR photography? Come and study with me!

1. Shooting little things

Flowers, birds and insects: use a file, the aperture is preferably below f5.6, and the focal length is preferably 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.

Shoot people

Basically, a larger aperture (within f5.6) and a focal length of more than 50mm are used. The shooting distance depends on the whole body, chest circumference and big photos, so the background is blurred, so I used one file! Good light, iso 100, poor light, within iso400.

Shoot the scenery

First gear, use appropriate aperture, above f8, and the focal length is arbitrary, but generally the wide-angle end is distorted, so use it as appropriate.

male actor

Install tripod, M gear, custom white balance or incandescent lamp, aperture above f8, and small aperture can make light show starlight effect; Within iso200, making the exposure time as long as possible can make some people who have no intention of walking disappear from the picture, leaving no trace and purifying the scene.

set off fireworks

By using the cable, B shutter and long exposure, the effect of overlapping multiple fireworks can be photographed.

6. Take pictures of running things

In the case of good light: first gear, the aperture size should be treated as appropriate; Use an aperture above f8 to obtain a large depth of field effect, and use a small aperture to obtain a shallow depth of field effect. If you want to shoot a very dynamic effect, you can use the S file, and the shutter is about 1/30. When you press the shutter, the lens will move behind the object at a suitable speed, which will produce a very dynamic effect.

Poor lighting: only handle it as appropriate, plus use chasing light.

7. Tap running water or fountain

Using S-file, the shutter speed is about 1/50, you can shoot the effect of satin, and using a faster shutter, you can shoot the effect of water droplets!

8. The portrait was taken at night

On the tripod, adjust the white balance, automatic or custom white balance; iso 100-400； First gear, the aperture is around f8, 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.

9. 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) The maximum aperture can be reduced to 1-2, which is used for close-up of people and still life.

4) 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.

10. photometric method

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

2) According to the subject matter you are shooting, make good use of metering modes (weighing metering, spot metering and central key metering).

3) If the metering is not accurate, please lock the gray things around before shooting.

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

EV is exposure compensation, and 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.

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.

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.

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.