Extreme macro photograph of a gecko eye at 1:1 magnification, vertical slit pupil in golden-brown iris with irregular melanin spots and pigment clusters, transparent nictitating membrane showing fine capillary blood vessels, matte reflection of blurred leaf green on cornea surface, natural side lighting from left emphasizing three-dimensional microstructure of iris folds and ridges, shot on Phase One XF IQ4 150MP with Schneider Kreuznach 120mm Macro APO lens at f/8, ultra shallow depth of field with only pupil edge and iris texture in sharp focus, real reptilian eye texture with microscopic scales visible on surrounding skin, authentic biological detail, visible skin pores on eyelid rim, individual scale texture, natural asymmetry in iris pattern, 8K resolution, physically accurate subsurface scattering in cornea, subtle dust particles on eye surface, real organic imperfection, medium format camera look with clinical precision but natural atmosphere, no AI artifacts, no plastic look, no oversaturation, no cartoon style, no illustration, no synthetic perfection, no watermark, no text overlay.