JP2015220673A5

JP2015220673A5 -

Info

Publication number: JP2015220673A5
Application number: JP2014104495A
Authority: JP
Filing date: 2014-05-20
Publication date: 2017-06-29
Anticipated expiration: 2034-05-20

Description

上記目的を達成するために、本発明に係る撮像装置は、撮像手段と、第１の測光値を取得する測光手段と、前記測光手段により取得された前記第１の測光値に基づいて、前記撮像手段の第１の露光時間を設定する設定手段と、被写体からの光の光量変化特性を検出する検出手段と、前記検出手段により検出された前記光量変化特性と前記設定手段により設定された前記第１の露光時間との関係に基づいて、露出条件の決定に用いる第２の測光値を設定するために、前記第１の測光値を補正する補正手段と、前記補正手段により設定された前記第２の測光値に基づいて、前記検出手段により検出された前記光量変化特性に基づいて設定された所定のタイミングで前記撮像手段が露光を行う際の露出条件を決定する決定手段と、を有することを特徴とする。 In order to achieve the above object, an imaging apparatus according to the present invention includes an imaging unit , a photometric unit that acquires a first photometric value, and the first photometric value acquired by the photometric unit based on the first photometric value. and setting means for setting a first exposure time of the image pickup means, which is set by the detection means and, with the light amount change characteristic detected by said detecting means and the setting means for detecting a light amount change characteristic of the light from the subject the based on the relationship between the first exposure time, in order to set the second photometric value used for determining the exposure conditions, and correcting means for correcting the first photometric value, set by the correction means and the based on the second photometric values, having, a determination unit configured the imaging means at a predetermined timing set based on the detected light intensity change characteristic determines the exposure conditions at the time of performing the exposure by the detection means Specially To.

Claims

Imaging means ;
Photometric means for obtaining a first photometric value ;
Setting means for setting a first exposure time of the imaging means based on the first photometric value acquired by the photometry means;
Detecting means for detecting a light quantity change characteristic of light from the subject;
In order to set a second photometric value used for determining an exposure condition based on the relationship between the light quantity change characteristic detected by the detection unit and the first exposure time set by the setting unit , Correction means for correcting the first photometric value;
Wherein based on the second photometric value set by the correction means, the imaging means at a predetermined timing set based on the light amount change characteristic detected by said detecting means the exposure conditions for performing exposure An imaging device comprising: a determining unit that determines.

The detecting device, according to claim 1, characterized that you calculate the light amount change characteristic on the basis of the results of a plurality of exposures in two different detectable exposure time and exposure times the quantity change characteristic concerning flicker Imaging device.

The predetermined timing is a timing including a peak timing or a bottom timing indicated by the light quantity change characteristic detected by the detection means based on the second photometric value set by the correction means. The imaging device according to any one of claims 1 to 2.

The detection means of claim 3, wherein the detecting a light amount change characteristic on the basis of a result of the multiple exposure performed in substantially the same period to an integer multiple of 2 times the reciprocal of the commercial power source frequency Imaging device.

The correction means corrects the first photometric value so that the second photometric value becomes larger as the first exposure time set by the setting means is shorter. 5. The imaging device according to any one of 4 .

An operation unit that receives an operation for setting an exposure time of the imaging unit;
The setting means, when receiving an operation to the operating means, the image pickup according to any one of claims 1 to 5, characterized in that setting the first exposure time based on the operation apparatus.

The photometric means acquires the first photometric value based on a signal acquired when the imaging means is driven with an accumulation time corresponding to approximately one cycle of a periodic light quantity change of light from the subject. The image pickup apparatus according to claim 1, wherein the image pickup apparatus is an image pickup apparatus.

8. The imaging according to claim 1, wherein the correction unit does not correct the first photometric value when the first exposure time is longer than a predetermined value. 9. apparatus.

A method for controlling an imaging apparatus including an imaging means,
A photometric step of obtaining a first photometric value;
A setting step of setting a first exposure time of the imaging means based on the first photometric value acquired in the photometric step;
A detection step for detecting a light quantity change characteristic of light from the subject;
In order to set a second photometric value used for determining an exposure condition based on the relationship between the light amount change characteristic detected in the detection step and the first exposure time set in the setting step, A correction step for correcting the first photometric value;
The correction based on the second photometric value set in step, said image pickup means at a predetermined timing set based on the light amount change characteristic detected by the detecting step the exposure conditions for performing exposure And a determination step for determining the image pickup apparatus.

A program for causing a computer to execute the control method according to claim 9.

A computer-readable storage medium storing a program for causing a computer to execute the control method according to claim 9.