I: Setting The Iso Speed - Canon EOS 5D Mark III Instruction Manual

i: Setting the ISO SpeedN
Set the ISO speed (image sensor's sensitivity to light) to suit the
ambient light level. With the <A> mode selected, the ISO speed will
be set automatically (p.127).
Regarding the ISO speed during movie shooting, see pages 223 and 226.
ISO Speed Guide
ISO Speed
L, 100 - 400
400 - 1600
1600 - 25600, H1, H2
* Higher ISO speeds will result in grainier images.
If [z3: Highlight tone priority] has been set to [Enable], you cannot
select "L" (ISO 50), ISO 100/125/160, "H1" (ISO 51200), and "H2" (ISO
102400) (p.148).
Shooting in high temperatures may result in images that look grainier.
Long exposures can also cause irregular colors in the image.
When you shoot at high ISO speeds, noise (dots of light, banding, etc.)
may become noticeable.
When shooting in conditions that produce an extreme amount of noise,
such as a combination of high ISO speed, high temperature and long
exposure, images may not be recorded properly.
126
Press the <m> button.
1
Set the ISO speed.
2
While looking at the LCD panel or
viewfinder, turn the <6> dial.
ISO speed can be set within ISO 100
- 25600 in 1/3-stop increments.
"A" indicates ISO Auto. The ISO
speed will be set automatically
(p.127).
Shooting Situation (No flash)
Sunny outdoors
Overcast skies or evening time
Dark indoors or night
(9)
Flash Range
The higher the ISO
speed, the farther the
flash range will extend.