With the purchase of a new camera, there was, among other things, a test of its sensor's ability to cope with high sensitivity values. And how did this test go?
Sensitivity in photographic technology is one of the three basic parameters determining the exposure of the resulting image. In digital cameras, the parameter is simply called ISO. In practice, the sensitivity of the film has a large effect on the quality of the photo – the higher it is, the greater the noise and grain. Unlike the grain of classic film, noise in digital footage is an extremely degrading factor. It spoils the quality of the photo, reduces its sharpness, absorbs details and covers (destroys) otherwise sharp color transitions. It can be eliminated only at the expense of photo details. This is especially true for digital cameras with a small chip that has a high resolution. However, it's quite the opposite with new DSLRs with large sensors; what was previously not possible with older cameras, often even realistic, can now be used in ordinary photography without any problems. Today's sensors, which have the size of a film frame, have no problems with sensitivities reaching values of 6400 ISO. In the attached photos, the sensitivity ranges from 1600 to 6400 ISO, so you can judge for yourself how modern large sensors deal with these values. In addition, everything was photographed handheld without a tripod.