A small round building with a spinning angled mirror at the top of the roof, projecting an image of the landscape on to a flat surface inside.
The camera obscura is made in the room style with a lens attached horizontally in the ceiling and a mirror at 45 degrees placed above it, the whole lens and mirror can be turned a complete 360 degree view. The F16 rated lens produces a good image even on a dull day.
In the 16th Century, camera obscuras became an invaluable aid to artists who used them to create drawings with perfect perspective and accurate detail. Portable camera obscuras were made for this purpose.
The first camera obscura was later built by an Iraqi scientist named Abu Ali Al-Hasan Ibn al-Haytham, born in Basra.
In camera terms, the light converges into the room through the hole transmitting with it the objects facing it. The object will appear in full colour but upside down on the projecting screen or wall opposite the hole inside the dark room. The explanation is that light travels in a straight line and when some of the rays reflected from a bright subject pass through the small hole in thin material they do not scatter but cross and reform as an upside down image on a flat white surface held parallel to the hole. Ib Al-Haitham established that the smaller the hole is the clearer the picture is.
In the 16th Century, camera obscuras became an invaluable aid to artists who used them to create drawings with perfect perspective and accurate detail. Portable camera obscuras were made for this purpose.
The first camera obscura was later built by an Iraqi scientist named Abu Ali Al-Hasan Ibn al-Haytham, born in Basra.
In camera terms, the light converges into the room through the hole transmitting with it the objects facing it. The object will appear in full colour but upside down on the projecting screen or wall opposite the hole inside the dark room. The explanation is that light travels in a straight line and when some of the rays reflected from a bright subject pass through the small hole in thin material they do not scatter but cross and reform as an upside down image on a flat white surface held parallel to the hole. Ib Al-Haitham established that the smaller the hole is the clearer the picture is.