Ultra-realistic portrait of a man in his 40s. He has brown hair with a few white

Ultra-realistic portrait of a man in his 40s. He has brown hair with a few white strands, a neatly trimmed beard and green eyes that reflect determination and introspection. His face is well defined, and his expression suggests reflection and resolution. The portrait should be from the waist up. He is wearing a casual shirt. The man is sitting at a kitchen table, with pages of notes and diagrams spread out in front of him. The environment should include elements such as a cup of coffee and a lamp, but should be blurred so as not to distract from the main subject. The lighting should be soft and warm, with light from a kitchen lamp coming from above, creating subtle shadows that accentuate the man's expression of introspection. The light should highlight the green eyes and the texture of the skin, emphasizing the seriousness of the situation. The image should convey a sense of introspection and determination, with a touch of tension. Suggest a warm color palette, such as golds and browns, to complement the nocturnal atmosphere. The photo should be of high quality, with 8k rendering and extreme detail, capturing the emotional essence of the moment.