Canon EOS-1Ds Mark III Konstrukcja i wydajność - Strona 22

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Viewfinder

Type: Eye-level SLR (with fixed pentaprism)

Coverage: Approx. 100% vertically and horizontally (Coverage against JPEG Large)

Magnification: 0.7x (-1 diopter with 50mm lens at infinity)

Eyepoint: 20mm

Built-in Dioptric Correction: -3.0 – +1.0 diopter

Focusing Screen: Interchangeable (9 types), Standard focusing screen: Ec-CIII

Mirror: Quick-return half mirror (Transmission: reflection ratio of 37:63, no mirror cut-off

with EF 1200mm f/5.6 or shorter lens)

Viewfinder Information: AF information (AF points, focus confirmation light), exposure

information (shutter speed, aperture, manual exposure, spot metering circle, ISO speed,

exposure level, exposure warning), flash information (flash ready, FP flash, FE lock, flash

exposure level), white balance correction, JPEG recording, number of remaining shots,

memory card information

Depth-of-field: Enabled with depth-of-field preview button (with Speedlite 580EX,

550EX, MR-14EX, or MT-24EX, pressing the depth-of-field preview button fires a

modeling flash)

Eyepiece Shutter: Built-in

Autofocus

Type: TTL-AREA-SIR with AF-dedicated CMOS Sensor

AF Points: 45

AF Working Range: EV 0-18 (at ISO 100)

Focusing Modes: One-Shot AF, Predictive AI Servo AF, AI Focus AF (Automatically selects

One-Shot AF or AI Servo AF), Manual focusing (MF)

AF Point Selection: Automatic selection, manual selection, home position (switch to

registered AF point)

Selected AF Point Display: Superimposed in viewfinder and indicated on LCD panel.

AF-assist Beam: Emitted by the dedicated Speedlite

Exposure Control

Metering Modes: 21-zone TTL full aperture metering. (1) Evaluative metering (linkable to

any AF point), (2) Partial metering (approx. 8.5% of viewfinder at center), (3) Spot

metering [Center spot metering (approx. 2.4% of viewfinder at center), AF point-linked

spot metering (approx. 2.4% of screen), Multi-spot metering (Max. 8 spot metering

entries)], (4) Center-weighted averaged metering

Metering Range: EV 1-20 (at 20°C with 50mm f/1.4 lens at ISO 100)

Exposure Control Systems: Program AE (shiftable), Shutter-priority AE, Aperture-priority

AE, E-TTL II Autoflash Program AE, and Manual.

ISO Speed Range: Equivalent to ISO 100-1600 (in 1/3-stop increments), ISO speed can

be expanded to ISO 50 and 3200 via menu selection.

AE Lock: Auto: Operates in One-Shot AF mode evaluative metering when focus is achieved.

Manual: By AE lock button in all metering modes.

IV. SPECIFICATIONS