Aperture & Depth of Field

1. Aperture/F-stop- "f-3.5-f8",opening up 1 F-stop means making the aperture size larger to allow more light through the lens and "stopping down" means making the aperture size or F-stop smaller to allow less light through the lens
2. Aperture Priority-  is a setting on some cameras that allows the user to choose a specific aperture value while the camera selects a shtter speed to match.
3. Ambient Light- refers to any source of light that is not explicitly supplied by the photographer for the purpose of taking photos
4. Artificial Light- any lighting that is not sunlight.
5. ASA/ISO/Film Speed- All film has a speed rating, whether digital or traditional. You may see this number called ASA or ISO (both indicate the film's rated speed). The ISO / ASA rating describes how quickly the film reacts to light.

6. Exposure Triangle-

7. Bracket- A method where you take numerous versions of the same photograph using varied exposure settings to ensure one precise result Some cameras have an ‘auto bracketing mode’ where the camera fires off several frames of varying exposure in sequence
8. How to control the depth of field -Achieving this quality by controlling the depth of field, which is the front-to-back zone in the frame in which objects appear sharp. When little else but the main subject appears sharp, that’s known as “shallow” depth of field. When the image is sharp from front-to-back, that’s known as “deep” depth of field.
   Three factors affect depth of field – lens aperture, distance from camera to subject and lens focal length. Aperture is most often used to control depth of field. To make as much of the scene as sharp as possible, set as small an aperture (f-stop) as the lighting will allow. To single out a subject, set as wide as aperture as possible; you’ll have to change the shutter speed to compensate in both instance.
9. Light Meter- is a device used to measure the amount of light

*** The meaning of the depth of field, i did in another post!!!***

Depth of Field

-Definiation-  Depth of field is the range of distance that appears acceptably sharp. It varies depending on camera type, aperture and focusing distance, although print size and viewing distance can also influence our perception of depth of field. Also, it is the distance between the nearest and farthest objects.    How to control depth of field- Larger apertures (smaller F-stop number) and closer focusing distances produce a shallower depth of field. The following test maintains the same focus distance, but changes the aperture setting.

Aperture/Macro Project

-Macro Examples-

Examples of short, medium, long depth of field

                                            -long

                                            -short

                                           -long

                                             -medium

                                           -short

                                           -short