fish-eye lens

wide-angled lens with a distorting effect 鱼眼镜头; 超广角镜头.

first-aid, first-born, first-class, first-day cover, first-footing, first-fruit, first-hand, first-rate, firsthand, firstly, firth, fiscal, fiscal year, fish, fish and chips, fish cake, fish finger (US fish stick), fish out, fish pond, fish weir, fish-farm, fish-hook, fish-kettle, fish-knife, fish-net, fish-plate, fish-slice, fisherman, fishery, fishing, fishing-boat, fishing-line, fishing-rod, fishing-tackle, fishmonger, fishwife, fishy, fissile, fission, fissionable,