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.
Between the heads of the metatarsal bones and the bottoms of the proximal phalanges (your toe bones) are the metatarsophalangeal joints. In other words, metatarsophalangeal joints connect your toe bones to your foot bones. These joints are surrounded by a thin joint capsule and have ligaments that support them. It's good to know, too, that the first metatarsophalangeal joint is commonly known as the big toe joint while the little toe joint is known as the fifth metatarsophalangeal joint. 1  The first metatarsal (big toe) also articulates with (or connects with) two sesamoid bones on the plantar surface of the foot (the bottom of the foot).