Canon 737632 EOS 5D Mark II Instruction Manual - Page 58

i: Setting the ISO SpeedN ISO Speed Guide ISO Speed L, 100 - 200 400 - 800 1600 - 6400, H1, H2 Shooting Situation (No flash) Sunny outdoors Overcast skies, evening Dark indoors or night Flash Range The higher the ISO speed, the farther the flash range will be. If [8C.Fn II -3: Highlight tone priority] is set to [1: Enable], the settable ISO speed range will be ISO 200 - 6400 (p.177). Using a high ISO speed or shooting in high-temperature conditions may result in more grainy images. Long exposures can also cause irregular colors in the image. When you shoot at high ISO speeds, horizontal stripes may appear as noise. With [8C.Fn I -3: ISO expansion] set to [1: On], "L" (equivalent to ISO 50), "H1" (equivalent to ISO 12800), and "H2" (equivalent to ISO 25600) can also be set (p.174). About "A" (Auto) ISO Speed If the ISO speed is set to "A", the actual ISO speed to be set will be displayed when you press the shutter button halfway. As indicated below, the ISO speed will be set automatically to suit the shooting mode. Shooting Mode 1/C/d/s/f a/ F ISO Speed Setting ISO 100 - 3200 Fixed at ISO 400 With flash Fixed at ISO 400* * If fill flash results in overexposure, ISO 100 or a higher ISO will be set. 58