The objective of this Standard is to specify how to measure and report the shooting time lag, shutter release time lag, shooting rate and start-up time lag for digital still cameras, including camera modules in phones and tablet computers. This Standard includes a method that uses control signals inside the digital still camera and a method that determines the timing values without requiring access to the inside of the digital still camera.
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test conditions
4.1 Illumination of the test scene
4.2 The chart and positioning of the digital still camera
4.3 Battery status
4.4 Memory card
4.5 Flash
4.6 Image stabilization
4.7 Other camera settings
5 Measurements
5.1 Definition of measurement
5.1.1 General
5.1.2 Measurement with external controls
5.1.3 Measurement with internal controls
5.2 Measurement method
5.2.1 Start-up time
5.2.2 Shooting time lag
5.2.2.1 General
5.2.2.2 Measurement in case of normal autofocus
5.2.2.3 Measurement in case of continuous autofocus
5.2.3 Shutter release time lag
5.2.4 Shooting rate
6 Reporting the results
Annex A
Annex B
B.1 Actuation of the timing device
B.2 The timing device
B.3 Timing device position for focal plane shutter and rolling shutter
Annex C
C.1 General
C.2 Start point (measurement start point)
C.3 Exposure point (exposure start point)
C.3.1 General
C.3.2 Exposure start point of image sensor shutter
C.3.3 Exposure start point of mechanical shutter
C.4 Identifying standby state (measuring start-up time lag)
C.4.1 General
C.4.2 Measuring the time until pre-capture is accepted
C.4.3 Measuring the time until the viewfinder image (through-image) is displayed
Annex D
Annex E
E.1 General
E.2 Actuation device accuracy
E.3 Time lag calculation accuracy
E.4 Confidence interval of average time lag measurement
Annex F
F.1 General
F.2 Hardware for autofocus measurement
F.3 Measurement steps
F.3.1 Measurement when initially focusing at long distance
