The O6400 can be evaluated by Sony A7M3 high-sensitivity image quality.

IT 168 evaluates the image quality of the camera under high sensitivity, which directly affects the shooting ability of the camera at night and sports themes. Usually, the better the high-quality performance of the camera, the purer the picture in dark light, and the stronger the ability to improve the shutter speed and condense the moment. Sony A7M3 is equipped with about 24.2 million Quan Huafu sensors, which is the mainstream level in today's full-frame cameras. How is the high sensitivity performance of this camera? Here we still test it by real shooting.

We put the Sony A7M3 on a tripod with an aperture of F8, turn off all internal noise reduction optimization and output JPEG files directly. Take the 100% enlarged screenshot of the position shown in the red box in the following ISO file.

Interpretation of ISO image quality of Sony A7M3 file

From the picture details, Sony A7M3 is between ISO 100 and ISO800. With the increase of sensitivity, noise increases slightly, but overall, sensitivity has little effect on the picture. From ISO 1600, the noise in the bright part of the picture began to be relatively easy to detect, and the whole picture was no longer as pure as that in ISO800, which was considered as entering the high sensitivity range. In ISO3200, the noise continues to increase, but fortunately, the color noise is well controlled, so the overall look is relatively pure;
O6400, the noise in the painting, especially the colored noise, has increased, and the details have also decreased. At this time, the image quality is a watershed;
O25600, the noise continues to increase and decreases step by step; Until ISO5 1200, the details were lost, the red and green noise began to get out of control, and the picture entered the unusable range.

Sony A7M3 High-sensitivity Image Quality Comments and Suggestions on Sensitivity Use

Generally speaking, the picture quality performance of Sony A7M3 basically meets our expectations, showing the level that a full-frame camera should have. As for the sensitive suggestions, in short: use it casually within the scope of ISO800, use it within the scope of ISO6400, use it with caution within the scope of ISO25600, and try not to use it above ISO5 1200. For example, when we use Sony A7M3 everyday, automatically setting the sensitivity within the range of ISO 100-ISO6400 should be an option that can give consideration to both image quality and convenience.