19 August 2019

Exposure and all that jazz…. ISO, SS, F-stop and the exposure triangle.


Save JPEG > maximum/ optimum image quality. JPEG uses file compression that results in a loss in quality.

Image size Image files are usually large and it is best to keep them large to retain the maximum resolution for printing and archival purposes. But when you want to cross them over the internet to your tutor, you’ll need to make them a lot smaller…

… reducing the resolution will cause images to look less sharp and more pixelated… (OCA Foundations in photoshop course work folder pg29)

Depth of Field

  • Shallow depth of field = Most common use for a sharp focus on an object eg. portrait and a blurry background. Therefore separating subject from background. Use a long focal length on the lens and/or a wide aperture for eg. F2.8
  • Deep depth of field = Landscape – wide angle end of. zoom lens and an aperture of F8 will give a sharp near to far in distance from the camera.
  • Close-up depth of field = A very shallow depth of field eg. 1mm or 2mm at the most. Small aperture like f8

12th September 2019

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