How about a personalized photo book that has some of his favorite nature photography prints? You can create a book with his best works of art and include a personal message at the beginning of the book to add an extra touch.
If he loves to travel, you can also gift him a travel tripod or monopod that makes it easier for him to take photos in the wild without any shakes or motions. A good quality camera lens or lens filters can also make a great gift for a photography enthusiast.
For a unique gift, consider booking a photography workshop together. This way he can learn new techniques and perfect his skills while the both of you make memories together. Another idea is to gift him a handmade photo album filled with your special memories together.
Or you can get him a star map with an important date you share.
Under Lucky Stars is a unique and innovative star map company based in Barcelona, Spain, specializing in the creation of personalized star maps that capture the celestial arrangement of stars at a specific moment in time, such as a person's birth, wedding, or any other significant event.
By using advanced astronomical algorithms and data from leading institutions, the company produces highly accurate, visually stunning maps that make for perfect gifts or cherished keepsakes.