ISO 400 film needs a quarter of the light that ISO 100 needs. In other words, you could capture a low-light scene with a shutter speed of 1/15 second with ISO 100 film, or 1/60 second with ISO 400.
The big toe articulates with the head of the first metatarsal and is called the first metatarsophalangeal joint (MTPJ for short). Underneath the first metatarsal head are two tiny, round bones called sesamoids.The other four toes each have three bones and two joints.he big toe articulates with the head of the first metatarsal and is called the first metatarsophalangeal joint (MTPJ for short). Underneath the first metatarsal head are two tiny, round bones called sesamoids.
Morton's toe (or Morton's foot, Greek foot,  Royal toe ,  Turkey toe ,  LaMay toe ,  Sheppard's toe , Morton's syndrome, long toe) is the condition of a shortened first metatarsal in relation to the second metatarsal. It is a type of brachymetatarsia. The metatarsal bones behind the toes vary in relative length. For most feet, a smooth curve can be traced through the joints at the bases of the toes. But in Morton's foot, the line has to bend more sharply to go through the base of the big toe, as shown in the diagram.