1. An image forming apparatus comprising: an image forming unit for forming an image on a recording sheet; a light source configured to emit a first light beam and a second light beam; an image capture device configured to capture an area to be illuminated by the first light beam on a surface of the recording sheet as a first image, and an area to be illuminated by the second light beam on the surface of the recording sheet as a second image; a control unit for controlling an image forming condition for the image forming unit based on information obtained from the first image and the second image, wherein the area to be illuminated by the first light beam and the area to be illuminated by the second light beam are on a same surface of the recording sheet, wherein a first straight line including a ray in a center of the first light beam and a second straight line including a ray in a center of the second light beam intersect with each other when each straight line is projected onto the surface of the recording sheet, and wherein a first area captured as the first image and the area illuminated by the second light beam do not overlap each other on the surface of the recording sheet and a second area captured as the second image and the area illuminated by the first light beam do not overlap each other on the surface of the recording sheet.