How do I set the shutter aperture when shooting in M gear in the room during the day??

ISO stands for sensitivity. It is used to indicate the sensitivity of the camera (the charged device) to light. The higher the ISO value, the more sensitive it is to light, for example, at an ISO of 1000, even faint light can make the camera sensitive to light.

Normally, we usually use ISO 100, but when the light is very low, you can turn up the ISO number. It should be noted that the higher the ISO, although the sensitivity to weak light increases, but at the same time, the noise point of the shooting should be greatly increased.

ISO is the abbreviation of International Standards Organization, which sets many industry standards.

The ISO standard in digital cameras is actually the standard designation from the film industry, where ISO is a measure of how sensitive a film is to light. The lower the value, e.g. 50 ISO, 64, 100 ISO, it means that the film is slower than the higher value, and the higher the value ISO is more than 200 standards, such as 200 ISO, 400 ISO, etc.

The light-sensitive component of a digital camera is an image sensor, which also uses ISO standards to measure sensitivity to light. And, as with film sensitivity, the higher the ISO value, the more granular the final image will be. However, the graininess produced in the ** captured by the digital camera is more superficial, which is usually called digital noise.

However, the biggest difference between the image sensor in digital cameras and traditional film is that the ISO sensing value of the sensor can be changed, most digital cameras allow users to adjust the ISO value setting, for film, to obtain different ISO values, it is necessary to use film that does not use ISO standards, such as Jin Koda 100, which is ISO100 film, and Jin Koda 200 is ISO value 200 film. In digital cameras, when the ISO value of the CCD is increased, the shutter speed is increased and the aperture is lowered to achieve better shooting results.

Shooting indoors is darker than outdoors without flash, so open the aperture wide and increase the shutter speed to prevent blurring of images caused by shaking.

So let's experiment with such parameters for 1 30s first

If the ** shot in this way is too dark, then continue to reduce the shutter to 1 25s, and if it doesn't work, then continue to reduce it.

If it's too bright, speed up the door for 1 45s

If you're going to zoom, it's probably not too big, but it's as big as you want.

But if you want to add a flash, it's different, the aperture is received, the shutter can still be opened to about 1 60, if there is still a problem with the brightness of the shot, it's still the above steps, just try a few more times.

Look what you're shooting! If you are close, open the aperture wide! With average metering!

Do you want to ask how to adjust the ** parameters...

Let's introduce a few simple methods:

Method 1: Measure the EV value with an exposure meter, and then set the aperture, shutter, and ISO combination according to the value. But I guess you don't want to buy a light meter, so look down.

At this time, please note that since the camera is a reflective metering system, there may be inaccurate metering (such as snow scenes, backlights, etc.), and you need to interpret the metering according to experience, so you may not necessarily be 0 after you have experience, it may be + or, or even +2, etc., you have to experience it slowly, I can't tell. But the general idea is correct: it is to use the camera's built-in light meter, and the machine will show you the value of 0 to show you what the machine thinks is suitable**.

Method 3: Take a shot with automatic gear (or M gear), remember the aperture, shutter, ISO combination when shooting, and then play back the photo you just took, and check the histogram, explain this ** is overexposure or underexplosion through histogram and personal experience, on this basis, adjust the aperture, shutter, ISO combination and then shoot one, and then check the histogram, so repeatedly know the appropriate.

In addition, whether it is accurate or not is just the basic, and then you have to pay attention to whether it expresses what you want to express, and sometimes what you want to express is not really accurate, but it is correct.

Generally, you can set a dial in the camera menu button to adjust the aperture or shutter, and this dial is usually designed near the shutter button. After setting the mode switch to M gear, turn the dial to determine the shutter or aperture value first; In general, there is an additional button, press and hold this additional key and then turn the dial to adjust the corresponding aperture or speed. Because each camera is different, you can read the manual for details.

To adjust according to the light and sensitivity, when the general sensitivity is set to 100, under the sunny conditions outside, the aperture is set to f11, the shutter speed is set to 1 125, and the shooting will be normal.