Mobile phone exposure shooting stars tutorial

Hello, landlord. At present, the mobile phones on the market can't shoot the stars clearly.

To know why, you need to know how the camera works. Please be patient, or you will never understand.

All starry sky lovers use SLR cameras to shoot the starry sky, plus post-processing to see Chu's stars. So there are two steps, there must be a high-end camera that can adjust manual exposure, and the second must be post-software.

SLR cameras, that is, cameras with large lenses, have the advantage of allowing photographers to set shooting parameters manually. Ordinary mobile phones and digital cameras are automatically photographed by digital systems. Some people will ask, isn't automatic better? Wrong, if it is fully automatic, many effects can't be photographed, such as car tracks, star tracks, silhouettes and silky water flow effects, which must be exposed manually. And SLR cameras can also shoot automatically, but if you are used to SLR, you will find that manual exposure will be more convenient and the effect will be better.

When shooting the starry sky, the scene is very dark because there is no light. If it is an ordinary mobile phone or an ordinary camera, because they are all automatic, the shooting system is too dark to capture light and focus, so you can't take pictures. SLR cameras can focus manually and switch between automatic and manual. You can shoot even if you lose focus after switching to manual.

Second, the working principle of the camera is to absorb external light and then form photos. If the outside light is insufficient, you can't take pictures. For shooting the starry sky, because the scene light is very dark, ordinary mobile phones and cameras can't absorb so much light, so they can't take pictures. SLR cameras can manually set the shutter speed, aperture and sensitivity. You can increase the exposure by manually adjusting the sensitivity, increasing the aperture or extending the shutter speed, and suck the faint starlight into the photosensitive original to complete the shooting, so as to shoot the stars clearly. For mobile phones and ordinary cameras, these parameters cannot be adjusted manually, so of course, the stars can't be photographed or clearly photographed.

Many people want to shoot the night scene with their mobile phones and ordinary cameras, but they can't shoot well. The reason is that when the scene light is very dark, mobile phones and ordinary cameras will automatically extend the shutter speed, which is the time when the reflector rises to absorb light. If you shake your hand a little at this time, the photos will be blurred. Or increase the automatic sensitivity, but it brings a lot of noise and the picture quality is very poor.

Even with a SLR camera, you must bring a tripod when shooting at night to ensure that there is no jitter during the exposure time, so that the things you shoot can be clear. If the shutter speed is 10s, it is obviously impossible for your hand to move within 10s, so the photos taken are of course blurred.

So if you want to shoot a scene with very dark light, you'd better buy a SLR camera or a micro-camera, and you can set the parameters manually.

Some advanced mobile phones may also have this function. If the landlord has to shoot with a mobile phone, he has to buy such a mobile phone, and then set the parameters according to the principle of SLR camera to expose the stars.