Electronic device including image sensor and operating method thereof

An electronic device comprising:

• an image sensor comprising a plurality of unit pixels, each unit pixel comprising two or more individual pixels;
• at least one processor electrically connected with the image sensor;
• and
• memory storing instructions, being executed by the at least one processor, cause the electronic device to:
• acquire a first image frame from the image sensor,
• determine whether a photographing environment of the electronic device corresponds to a designated photographing environment, based on the first image frame,
• in response to the photographing environment corresponding to a first photographing environment:
• control the image sensor to acquire analog data through the individual pixels and to provide first digital data and second digital data to the at least one processor, wherein the first digital data is digitally converted from the analog data with first sensitivity by the image sensor, and second digital data digitally converted from the analog data with second sensitivity which is higher than the first sensitivity by the image sensor;
• and
• acquire a second image frame following the first image frame, based on the first digital data and the second digital data, and
• in response to the photographing environment corresponding to a second photographing environment:
• control the image sensor to provide first image data and second image data to the at least one processor, wherein the first image data is acquired according to a first conversion gain based on light quantity data inputted to the unit pixel, and second image data is acquired according to a second conversion gain lower than the first conversion gain based on the light quantity data, and
• acquire the second image frame based on the first image data and the second image data.