How to adjust parameters when SLR cameras use M-files?

The Chinese name of M file is: manual exposure file.

The main parameters of the camera (aperture, shutter, ISO) can be adjusted according to the user's intention. M is an all-around gear, but correspondingly, it has higher technical requirements for users and is not suitable for all scenarios.

If you can skillfully use the sixteen rules of sunshine, it will also be of great help to the use of M-files.

Sixteen-day illumination method, also known as "clear f/ 16" method, is a method for photographers to judge the shutter time and aperture value by visual illumination.

Sixteen sunny days and eight cloudy days

Cloudy, eleven days and four nights.

Cloud cover exceeds 5.6.

Rain, snow and sunset.

Indoor court for two seconds

Shutters on the living room stage 8

Step 1: Set the shutter to the sensitivity. For example, ISO 50 sets the shutter to 1/60 and ISO 65438 sets the shutter to1125. In short, make the shutter speed as close to the sensitivity as possible.

Step two:

If the weather is clear, set the aperture to f 16.

If it is slightly cloudy, the aperture is set to f 1 1.

If it is cloudy, set the aperture to f8.

If the weather is very gloomy, please set the aperture to f5.6

The following scenarios apply to M files:

1,? Shutter adjustment. Scenes that require precise control of exposure time. Such as starry sky and long exposure. You can use the M file to control the shape of the lamp freely, and even draw with the light.

2,? The combination of aperture, shutter and iso. Scenes where multiple photos need to be stitched together. The stitching of multiple photos must ensure that the shutter, aperture, iso and color temperature of each photo are consistent. It is very convenient to fix all parameters with M-file, which will not lead to inconsistent exposure of each photo and waste film because of different light metering points of the camera.

3,? The exposure parameters of the camera are inconsistent with the user's expectation. In the scene of Gao Fancha, the camera can't get the correct exposure parameters automatically, so users need to adjust the parameters according to their own requirements.

M file is the purest photo file, all the control rights are in the hands of users, which can give users unlimited creative space, but it requires higher thinking and proficiency of users. Fully understanding the three parameters of photography (shutter, aperture, iso) is the entry requirement for using M-file.

This is my understanding of M-file technology. I hope you can go further on the road of photography. By the way, if you never knew that there was such a thing as estimated exposure and the "sunny f/ 16" rule before, you really missed a very useful tool. If you want more information, please check the contents printed in the Fuji or Kodak film box.