Download your free cheat sheet to help you get off AUTO and start getting more creative photos with your Digital Camera. IT shows you how you can control Depth of Field. It shows the best Aperture for Portraits and the best Aperture for Landscape photos. It also looks at another key factor in controlling Depth of Field: Focusing Distance. by bertha
it doesn't show the affect the settings have on exposure levels. F1.4, 1/2s and iso 25600 should be much brighter then F32, 1/1000s and iso 50. ISO is not used to reduce noise as this diagram suggests, it's to compensate for poor lighting conditions. The higher ISO the brighter the photo will become at the cost of introducing noise.