They say the eyes are the window to the soul. I agree 100%!
The eyes have it. I have had a Tamron 90mm macro for awhile but don't often use it. I wanted to put a unique series of all my animals together, and that lens fit the bill for what I needed. 1 lens, 1 common focal point, 5 different subjects. Constraints like these can add a cohesiveness to a series, whether it is limiting the shoot to a single lens, a single color, a particular type of object (doors, address numbers, eyes) or a single focal point. In some ways, it releases the creativity as there are no other decisions that need to be made.