CAMERA OBSCURA (Latin for "dark chamber")- a blacked-out chamber
with a small pinhole through which light gets compressed. First recorded
observation was by Mo Ti, in China, circa 400 BC/BCE.
![Image result for camera obscura](https://ksr-ugc.imgix.net/assets/011/677/259/c4a7f4c65e183378a6413b0715a98e67_original.jpeg?ixlib=rb-2.1.0&crop=faces&w=1024&h=576&fit=crop&v=1463686657&auto=format&frame=1&q=92&s=31b661a1a86d5c886de662e1cdb704aa)
EXPOSURE TRIANGLE
Three settings on a camera to achieve acceptable exposure for a photograph.
![Image result for exposure triangle](https://static.photocdn.pt/images/articles/2016/exp_triangle.jpg)
![Image result for aperture definition](https://www.slrlounge.com/wp-content/uploads/2015/04/photography-shutter-speed-aperture-iso-cheat-sheet-chart-fotoblog-hamburg-daniel-peters-11-800x393.jpg)
APERTURE
The opening into a camera.
Aperture can be adjusted to let in more/less light as needed for correct exposure.
Depth of field = the distance between the nearest and furthest elements in a scene that appear to be acceptably in focus in an image.
![Image result for aperture definition](https://cdn-ep19.pressidium.com/wp-content/uploads/2011/04/Aperture-Scale_700px-1.png)
![Image result for aperture range example light](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_vtQHkbaZ3wNU0m-xSOb4hKzx-urgeHTyhEI5_EZbZK49naWacffFHANzjFb5kDU2aWgcqMed5jxCkR0TS8FcvMWd0riYbl72nb5xa2v7N0dYzJL5J_13Q=s0-d)
SHUTTER SPEED
The speed at which the aperture opens & closes.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh9EZGZF19B6ZgqSR7MO6Gb_QWODFvrAOEihqtCHPEmhtX8zm0Fi8l7ckvyiIBCo4CAsmZC3TbXC4Bgw1f1mItAYUsxjXh_jZBrLgqdkzBv6wr1YeFJjROdXzISHrArLOwM3b3z6g/s320/SHUTTER+SPEED+front.jpg)
ISO
The sensitivity (to light) of the camera's sensor
The HIGHER the ISO NUMBER, the MORE SENSITIVE the sensor.
Higher ISO numbers are needed for low light
![Image result for iso range example](https://club.hihonor.com/latin/latin_data/images/2019/1/28/141992943b30df20c55d2017f41b4af7.jpg)
RULE OF THIRDS
A method for composing an image wherein one places the main subject matter at one of the intersecting points of the thirds' grid.
LEADING LINES
A technique of composition where the viewer's attention is drawn by lines to the main subject of the image.
WHITE BALANCE (WB)
The temperature of the light you are photographing.
DIGITAL CAMERA SENSOR SIZE
![Image result for digital images sensor size](https://shuttermuse.com/wp-content/uploads/2017/01/common-digital-sensor-sizes.jpg)
![Image result for digital dimensions image sizes comparison](https://cdn-ep19.pressidium.com/wp-content/uploads/2018/11/updated-sensor-sizes-medium-format-to-mobile-phone.png)
DIGITAL DIMENSIONS (IMAGE SIZES)
![Image result for camera obscura](https://ksr-ugc.imgix.net/assets/011/677/259/c4a7f4c65e183378a6413b0715a98e67_original.jpeg?ixlib=rb-2.1.0&crop=faces&w=1024&h=576&fit=crop&v=1463686657&auto=format&frame=1&q=92&s=31b661a1a86d5c886de662e1cdb704aa)
EXPOSURE TRIANGLE
Three settings on a camera to achieve acceptable exposure for a photograph.
![Image result for exposure triangle](https://static.photocdn.pt/images/articles/2016/exp_triangle.jpg)
![Image result for aperture definition](https://www.slrlounge.com/wp-content/uploads/2015/04/photography-shutter-speed-aperture-iso-cheat-sheet-chart-fotoblog-hamburg-daniel-peters-11-800x393.jpg)
APERTURE
The opening into a camera.
Aperture can be adjusted to let in more/less light as needed for correct exposure.
Depth of field = the distance between the nearest and furthest elements in a scene that appear to be acceptably in focus in an image.
![Image result for aperture definition](https://cdn-ep19.pressidium.com/wp-content/uploads/2011/04/Aperture-Scale_700px-1.png)
![Image result for aperture range example](https://petapixel.com/assets/uploads/2016/06/aperture-effect-chart-2-710x700.jpg)
SHUTTER SPEED
The speed at which the aperture opens & closes.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiGy_m2S1_EyUuY2gNXmg1GMvQnpw7xIVAi00-5EAIzjFJNrogKiDA6q0GRItY210OEBsxqQjLiC4CHoCZM3LvHH86OfV-mNJZyYkaSN3JMSJh73EXHMJjAGz7ceNMr7_Sy9jsKZw/s320/SHUTTER+SPEED+back.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh9EZGZF19B6ZgqSR7MO6Gb_QWODFvrAOEihqtCHPEmhtX8zm0Fi8l7ckvyiIBCo4CAsmZC3TbXC4Bgw1f1mItAYUsxjXh_jZBrLgqdkzBv6wr1YeFJjROdXzISHrArLOwM3b3z6g/s320/SHUTTER+SPEED+front.jpg)
ISO
The sensitivity (to light) of the camera's sensor
The HIGHER the ISO NUMBER, the MORE SENSITIVE the sensor.
Higher ISO numbers are needed for low light
![Image result for iso range example](https://club.hihonor.com/latin/latin_data/images/2019/1/28/141992943b30df20c55d2017f41b4af7.jpg)
RULE OF THIRDS
A method for composing an image wherein one places the main subject matter at one of the intersecting points of the thirds' grid.
![Image result for rule of thirds photography](https://cdn-ep19.pressidium.com/wp-content/uploads/2011/04/rule-of-thirds-dog.jpg)
LEADING LINES
A technique of composition where the viewer's attention is drawn by lines to the main subject of the image.
![Image result for leading lines person](https://live.staticflickr.com/2786/4396797181_115f95c2a1_b.jpg)
WHITE BALANCE (WB)
The temperature of the light you are photographing.
![Image result for white balance](https://cdn.mos.cms.futurecdn.net/tpgQzGfGNK4Jcn7LwcGsui-1200-80.jpg)
DIGITAL CAMERA SENSOR SIZE
![Image result for digital images sensor size](https://shuttermuse.com/wp-content/uploads/2017/01/common-digital-sensor-sizes.jpg)
![Image result for digital dimensions image sizes comparison](https://cdn-ep19.pressidium.com/wp-content/uploads/2018/11/updated-sensor-sizes-medium-format-to-mobile-phone.png)
DIGITAL DIMENSIONS (IMAGE SIZES)