Why can't I take pictures in the dark without OIS?

Many people may not know what OIS is. OIS is the abbreviation of optical image stabilization, which is simply optical image stabilization. After the mobile phone is matched with OIS optical anti-shake, the photos taken greatly reduce the blur problem caused by shaking when taking pictures by hand.

However, when taking pictures in dark light, the photos are blurred. Besides OIS optical image stabilization, there are many factors that affect the effect of taking pictures at night. Give you a wave of analysis with pictures and truth.

This is a night shot of Xiaomi 9, and it is also a 48-megapixel IMX586 lens. Xiaomi 9 uses f/ 1.7 aperture, which obviously shows that the screen is underexposed. The most important thing is that Xiaomi 9 has no optical anti-shake technology, so it is not very good at night shooting. The smearing feeling is a bit heavy, resulting in serious loss of picture details.

Vivo X27 Pro, also an IMX586 lens module, uses f/ 1.79 aperture. However, unlike Xiaomi 9, it supports optical image stabilization, so the overall sharpness of the photos taken is higher than Xiaomi 9, and the impression is better than Xiaomi 9.

The last photo was taken at night by Glory 20pro. Different from the above two mobile phones, this mobile phone has dual OIS optical anti-shake technology and adopts f/ 1.4 super aperture, so the picture definition is high, the exposure is accurate, and the color reproduction is more accurate than the other two mobile phones. On the whole, there is no obvious problem with the night shooting of Glory 20 Pro.

As can be seen from the above three photos, the night shooting of Glory 20pro is better, mainly because it has dual o is optical anti-shake technology, and with the super-large aperture of f/ 1.4, the amount of light entering the photo is increased, so the picture is clearer and the degree of reproduction is higher. In fact, OIS anti-shake is the key to shoot a good night scene, and the aperture size is equally important to affect the amount of light entering.

If you want to buy a mobile phone with good camera effect, Glory 20pro is a good choice. The price is right, and the night shooting effect is strong.

It seems that OIS has nothing to do with this. The Chinese name is optical image stabilizer, commonly known as optical image stabilization, which can be seen from the name.

Its own function is to correct the "optical axis deviation" through the floating lens of the lens. Talking to people is to overcome the image blur caused by camera vibration. So it mainly plays a stabilizing role.

Dark light shooting depends more on the camera hardware itself, adaptation software and personal photography level, such as shutter speed, aperture size, ISO value and so on. Speaking of which, are you asking about ISO? Are you mistaken? Want to know OIS, as long as you don't need large zoom, it won't affect imaging.

Let me talk about this problem.

The full name of OIS is optical image stabilization.

Convert it into a stable optical image, and correct the optical axis deviation through the floating lens of the lens.

The principle is simple, that is, the tiny motion is detected by the gyroscope in the lens and the signal is transmitted to the microprocessor. The processor immediately calculates the bit offset that needs to be compensated. Then the lens group is compensated according to the shaking direction and displacement of the lens, so as to effectively overcome the image blur caused by the sound camera and vibration.

Ois. Optical image stabilization can improve the shooting of mobile phones in the following three aspects.

First, stable shooting For ordinary users, taking pictures with mobile phones will not be like those photographers, but only taking pictures with their hands, sometimes even with one hand, which is equivalent to such a scene. If the shutter of the mobile phone is too slow, it is likely that the imaging will be very virtual. If the mobile phone has ois anti-shake, it can play the role of stable shooting, but hand-held shooting will not produce blur and improve the photo experience.

Second, enhance the brightness of the picture and improve the details of the dark parts. Under normal circumstances, does optical image stabilization affect the picture requirements? If the safe shutter speed of the mobile phone is 1/30 seconds, the safe shutter speed after optical jitter becomes 1/8 seconds, while the speed of 100+0/30 seconds in dark shooting is much less than 1/8. Second.

So under the same conditions, with optical image stabilization, we will see brighter details and clearer picture quality, which is better than the mobile phone with digital image stabilization.