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ISO 171

5.20 ISO

Menu Position MENU  5  ISO

What it Does Specifies how sensitive the camera is to light. The higher the
number, the more sensitive (and the greater the noise)

Recommended Setting For general walk-around photography, I
recommend AUTO with the limits set to between 100 and 3200. When
you’re getting serious about a composition, take it off AUTO and set it for as
low a value as you can get away with.

ISO can be changed either via this menu item or via the dedicated ISO
button, and was covered in Section 3.5.

5.21 METERING MODE

Menu Position Menu  5  Metering
Mode

What it Does Allows you to select between
Center-weighted, Spot, and Multi-Segment
Metering

Recommended Setting Multi-Segment
Metering
Figure 5-30: This is an old-
fashioned (yet modern)
It’s easiest to understand the evolution of exposure meter. They’re still
the different metering modes once you being made because they still
understand the history of determining serve a useful purpose: When
exposure. It all started with the used correctly they will always
handheld meter like the kind shown in give you the right exposure
Figure 5-30. They measured the recommendations, regardless of
amount of light falling onto your subject, how dark or how light your
and they were always right. subject is.