Canon 1Ds Instruction Manual - Page 171

Viewfinder, Autofocus, Exposure Control

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Specifications • Viewfinder Type Coverage Magnification Eyepoint Built-in dioptric correction Focusing screen Mirror Viewfinder information Depth-of-field preview Eyepiece shutter Glass pentaprism Approx. 100 percent vertically and horizontally with respect to the effective pixels 0.7x (-1 diopter with 50mm lens at infinity) 20 mm -3.0 - +1.0 diopter Interchangeable (9 types), Standard focusing screen: Ec-CIII Quick-return half mirror (Transmission:reflection ratio of 37:63, no mirror cut-off with EF 1200mm f/5.6 or shorter lens) AF information (AF points, focus confirmation light), exposure information (shutter speed, aperture, manual exposure, metering range, ISO speed, exposure level, exposure warning), flash information (flash ready, FP flash, FE lock, flash exposure level), JPEG format, number of remaining shots, CF card information Enabled with depth-of-field preview button Built-in • Autofocus Type AF points AF working range Focusing modes AF point selection Selected AF point display AF-assist beam TTL-AREA-SIR with a CMOS sensor 45 AF points (Area AF) EV 0-18 (at ISO 100) One-Shot AF AI Servo AF Manual focusing (MF) Automatic selection, manual selection, home position (switch to registered AF point) Superimposed in viewfinder and indicated on top LCD panel AF-assist beam is emitted by the dedicated Speedlite • Exposure Control Metering modes TTL full aperture metering with 21-zone SPC (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 viewfinder) • Multi-spot metering (Max. 8 spot metering entries) (4) Centerweighted average metering Metering range EV 0-20 (at 20˚C with 50mm f/1.4 lens, ISO 100) Exposure control systems Program AE (shiftable), shutter-priority AE, aperture-priority AE, depth-of-field AE, E-TTL autoflash, manual, flash metered manual 10 ISO speed range Equivalent to ISO 100-1250 (in 1/3-stop increments), ISO speed can be expanded to ISO 50. (C.Fn-03) Exposure compensation Auto exposure bracketing (AEB): +/-3 stops in 1/3-stop increments. Reference 171

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171
Reference
10
Specifications
•
Viewfinder
Type
Glass pentaprism
Coverage
Approx. 100 percent vertically and horizontally with respect to
the effective pixels
Magnification
0.7x (–1 diopter with 50mm lens at infinity)
Eyepoint
20 mm
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,
metering range, ISO speed, exposure level, exposure
warning), flash information (flash ready, FP flash, FE lock,
flash exposure level), JPEG format, number of remaining
shots, CF card information
Depth-of-field preview
Enabled with depth-of-field preview button
Eyepiece shutter
Built-in
•
Autofocus
Type
TTL-AREA-SIR with a CMOS sensor
AF points
45 AF points (Area AF)
AF working range
EV 0-18 (at ISO 100)
Focusing modes
One-Shot AF
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 top LCD panel
AF-assist beam
AF-assist beam is emitted by the dedicated Speedlite
•
Exposure Control
Metering modes
TTL full aperture metering with 21-zone SPC
(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 viewfinder)
• Multi-spot metering (Max. 8 spot metering entries)
(4) Centerweighted average metering
Metering range
EV 0-20 (at 20˚C with 50mm f/1.4 lens, ISO 100)
Exposure control systems
Program AE (shiftable), shutter-priority AE, aperture-priority
AE, depth-of-field AE, E-TTL autoflash, manual, flash metered
manual
ISO speed range
Equivalent to ISO 100-1250 (in 1/3-stop increments),
ISO speed can be expanded to ISO 50. (C.Fn-03)
Exposure compensation
Auto exposure bracketing (AEB): +/–3 stops in 1/3-stop
increments.