Recently virtual reality (VR) technology has been developed and simulation using VR has become an effective way to create images in the design stage of architectural spaces. VR technology facilitates to grasp an image of the lighitng environment in a space by depicting photorealistic image in one to one scale. Also, VR technology could possibly reduce the time consumed on planning architecutre. However the relationships between brightness of VR image and that in real spaces have not been identified. In this study, subjective experiments to identify the brightness sensation of VR image and effect of pressentation method (stantionary/transitional) were conducted. From the results of the experiments, it was found that the difference of brightness sensation of VR image marked different tendencies according to luminance distribution in a space and presentation method had little effect on brightness sensation when one space was shown at a time.