JPH0266530A - Automatic focusing camera with external finder - Google Patents

Automatic focusing camera with external finder

Info

Publication number
JPH0266530A
JPH0266530A JP21913388A JP21913388A JPH0266530A JP H0266530 A JPH0266530 A JP H0266530A JP 21913388 A JP21913388 A JP 21913388A JP 21913388 A JP21913388 A JP 21913388A JP H0266530 A JPH0266530 A JP H0266530A
Authority
JP
Japan
Prior art keywords
range
finding
distance measurement
distance
warning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP21913388A
Other languages
Japanese (ja)
Inventor
Yoshitaka Murata
村田 好孝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP21913388A priority Critical patent/JPH0266530A/en
Publication of JPH0266530A publication Critical patent/JPH0266530A/en
Pending legal-status Critical Current

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  • Focusing (AREA)
  • Viewfinders (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE:To accurately correct a finder field and to securely adjust a focal point by discriminating, based on range-finding information, whether an object is within a prescribed short distance or not, activating and expediting range-finding in condition where the parallax between the range-finding optical axis and photographing optical axis is eliminated. CONSTITUTION:An automatic focusing camera with an external finder is provided with a discriminating means 112 and a warning means 113; the means 112 discriminates, based on the range-finding information, whether the object is within the prescribed short distance or not; when the object is within the prescribed short distance, the means 113 warns about it. Additionally, the automatic focusing camera is provided with a range-finding area variable means 114 and a field frame shifting means 117; the means 114 displays an appropriate range-finding scope when the warning is given; based on the information on range-finding in the displayed range-finding area, the means 117 shifts a field frame. Range-finding in condition where the parallax between the range-finding optical axis and photographing optical axis is eliminated is expedited, thereby eliminating the parallax between them. Thus, the finder field is accurately corrected and the object is securely focused, therefore, photographing with the intended scope is performed.

Description

【発明の詳細な説明】 (発明の利用分野) 本発明は、焦点距離を可変な撮影レンズとは独立な光学
系を備えた外部ファインダ装置を有するオートフォーカ
スカメラの改良に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to an improvement in an autofocus camera having an external finder device equipped with an optical system independent of a photographic lens having a variable focal length.

(発明の背景) 従来のこの種のカメラにおける外部ファインダ装置とし
ては、撮影レンズのズーミングに連動して像倍率を変え
るアルバタ式ブライトフレーム式のものが大部分であり
、至近距離で生じる撮影レンズとファインダ(装置)の
バララックスは、第4図に示す様なファインダ内の光学
部材に印刷された無限及び至近側の視野枠表示により、
撮影者が被写体距離に応じて視野枠を切換えて補正して
いた。
(Background of the Invention) Most of the conventional external finder devices for this type of camera are of the Albata type bright frame type, which changes the image magnification in conjunction with the zooming of the photographing lens. The balax of the finder (device) is determined by the infinity and near field frame indications printed on the optical member inside the finder as shown in Figure 4.
The photographer made corrections by switching the field of view according to the subject distance.

しかしながら、このような方式では、補正が撮影者の直
感的な判断に委ねられるため、正確な補正は難しく、ま
た無限と至近側の中間は枠の表示が無いため、補正が困
難であった。
However, in such a method, accurate correction is difficult because correction is left to the photographer's intuitive judgment, and correction is difficult because there is no frame displayed between infinity and close range.

前記第4図において、21は無限側の視野枠、22は至
近側の視野枠、23は測距範囲を示す測距マークであり
、前記無限側の視野枠21と至近側の視野枠22のずれ
量は、撮影レンズの焦点距離が大きい程、また撮影領域
がより至近側へくる程大となり、近年のズームレンズの
高倍率化及び撮影領域の至近側化に伴い、前述した問題
が顕著となっている。
In FIG. 4, 21 is a visual field frame on the infinity side, 22 is a visual field frame on the closest side, and 23 is a distance measurement mark indicating the distance measurement range. The amount of misalignment increases as the focal length of the photographic lens increases and as the photographing area moves closer to the close-up side.As the magnification of zoom lenses increases in recent years and the photographing area moves closer to the close-up side, the above-mentioned problem becomes more noticeable. It has become.

そこで、カメラ内のAF手段からの測距情報に基づいて
ファインダ視野枠の移動を行い、パララックス補正を行
う方式が考えられるが、AF手段自体がパララックスを
持ち測距誤差を生じる場合、ピントが合わなくなるだけ
でなく、ファインダのパララックス補正も誤差を生じ、
システムとして成立しないことになる。
Therefore, a method can be considered that corrects parallax by moving the viewfinder field frame based on distance measurement information from the AF means in the camera, but if the AF means itself has parallax and causes distance measurement errors, the focus Not only will the images not match, but the parallax correction in the viewfinder will also cause errors.
It will not work as a system.

第5図は撮影レンズと外部ファインダのバララックスに
ついて説明する図であり、31は撮影レンズ、32は外
部ファインダ、33はAF用の参考レンズ、34はAF
用の基準レンズであり、ここでのAP手段は、三角測距
によるアクティブもしくはパッシブ方式より構成されて
いる。
FIG. 5 is a diagram explaining the variation between the photographic lens and the external finder, where 31 is the photographic lens, 32 is the external finder, 33 is the reference lens for AF, and 34 is the AF
The AP means here is an active or passive method using triangulation distance measurement.

この状態において、ファインダ光軸上のある点と同一部
分が撮影レンズ31により結像された場合、撮影光軸か
らその像点までのずれ量(バララックス)Pは近似的に
次の様に表される。
In this state, when the same part as a certain point on the finder optical axis is imaged by the photographing lens 31, the amount of deviation (varallax) P from the photographing optical axis to that image point is approximately expressed as follows. be done.

P岬f −F/ (D−2f) ここで、fは撮影レンズ31の焦点距離、Fは撮影レン
ズ31とファインダ32の光軸間距離(FX、Fy ’
) 、Dは被写体距離であり、バララックスPは撮影レ
ンズ31の焦点距離及び撮影レンズ31と外部ファイン
ダ32の光軸間距離Fにほぼ比例して大きくなり、被写
体距離に逆比例する。
P Misaki f −F/ (D-2f) Here, f is the focal length of the photographic lens 31, and F is the distance between the optical axes of the photographic lens 31 and the finder 32 (FX, Fy'
), D is the subject distance, and the vararax P increases approximately in proportion to the focal length of the photographic lens 31 and the distance F between the optical axes of the photographic lens 31 and the external finder 32, and is inversely proportional to the subject distance.

例えば、f =40mm、 FY =21mm、 D=
0.5 mの場合は、P→1.68mmとなり、画面サ
イズが「88X6.6Jの2/3インチのCODを用い
るカメラの場合、バララックスPは「画面幅/2」に対
し、Y方向で50%にも達する。従って、このパララッ
ク補正をするために、被写体距離及び撮影レンズ31の
焦点距離に応じてファインダ視野枠の補正移動を行う必
要があるが、第4図のAP手段の如<AFセンサ自体も
撮影レンズ31とバララックスを持つために、ここで得
られる測距情報に誤差を持ち、正しいファインダ視野補
正が出来ない。
For example, f = 40mm, FY = 21mm, D =
In the case of 0.5 m, P → 1.68 mm, and in the case of a camera using a 2/3 inch COD with a screen size of 88 It reaches 50%. Therefore, in order to perform this parallax correction, it is necessary to perform correction movement of the viewfinder field frame according to the subject distance and the focal length of the photographing lens 31, but as shown in the AP means in FIG. 31 and vararax, the distance measurement information obtained here has an error, making it impossible to correct the finder field of view.

(発明の目的) 本発明の目的は、上述した問題点を解決し、正確なファ
インダ視野補正を行え、確実に被写体にピントを合せた
、意図する範囲の撮影を行わせることのできる外部ファ
インダ装置を有するオートフォーカスカメラを提供する
ことである。
(Object of the Invention) An object of the present invention is to solve the above-mentioned problems, and an external finder device capable of accurately correcting the viewfinder field of view, reliably focusing on the subject, and photographing the intended range. An object of the present invention is to provide an autofocus camera having the following features.

(発明の特徴) 上記目的を達成するために、本発明は、測距手段よりの
測距情報から被写体が所定の至近距離内に居るか否かを
判別する判別手段と、該判別手段にて被写体が所定の至
近距離内に居ることが判別されている場合にその事の警
告を行う警告手段と、該警告手段の警告時に、所定の至
近領域における適正な測距範囲位置を示す表示を行う測
距領域可変手段と、該測距領域可変手段により表示され
た測距領域において測距手段で求められる測距情報に基
づいて、前記視野枠を移動する視野枠移動手段とを設け
、以て、バララックスが生じている事の警告を行うと共
に、この時の適した測距領域位置を示す表示を行ってそ
の位置での再測距を撮影者に促し、つまり測距光軸と撮
影光軸のバララックスを無くした状態での測距を促し、
該位置にて得られる測距情報に基づいて、前記視野枠を
移動させて、ファインダ光軸と撮影光軸のバララックス
を無くすようにしたことを特徴とする。
(Features of the Invention) In order to achieve the above object, the present invention provides a discriminating means for discriminating whether or not a subject is within a predetermined close distance from distance measurement information from a distance measuring means; A warning means for giving a warning when it is determined that a subject is within a predetermined close range, and a display indicating an appropriate ranging range position in the predetermined close range when the warning means gives a warning. A distance measurement area variable means and a field frame moving means for moving the field of view frame based on distance measurement information obtained by the distance measurement means in the distance measurement area displayed by the distance measurement area variable means, In addition to warning that vararax has occurred, a display indicating the appropriate distance measurement area position at this time is displayed to prompt the photographer to remeasure the distance at that position. Promotes distance measurement with no axis variation,
The present invention is characterized in that the field frame is moved based on distance measurement information obtained at the position to eliminate disparity between the finder optical axis and the photographing optical axis.

(発明の実施例) 以下、本発明を図示の実施例に基づいて詳細に説明する
(Embodiments of the Invention) Hereinafter, the present invention will be described in detail based on illustrated embodiments.

第2図(a)は、測距情報に基づいてパララックス補正
を行う視野枠移動手段の概略構成図であり、第2図(b
)はその際のファインダ視野の移動状態を示す図である
FIG. 2(a) is a schematic configuration diagram of a field frame moving means that performs parallax correction based on distance measurement information, and FIG.
) is a diagram showing the movement state of the finder field of view at that time.

第2図中、1は撮影レンズのフォーカシングレンズ、2
はフォーカシングレンズ1と一体的に構成され、フォー
カス動作と連動して動く補正カム、3は補正カム2に連
動して動くファインダの視野枠、4は補正カム3のラッ
ク部に嵌合し、フォーカス動作及びこれに伴う視野枠移
動を行わせるギア、5はギア4を駆動するためのモータ
、6はファインダ光学系、7は視野枠3に印刷された測
距範囲を示す標準測距マーク(AF視野枠)、7a(第
2図(b)、第3図参照)は、後述する測距領域可変手
段により至近限界側の測距領域を示す位置に表示され、
撮影者に該表示位置による最測距を促する役割を持つ至
近側測距マーク、8はガイドビン、9は、前記視野枠3
と一体的に構成され、前記ガイドビン8と共に該視野枠
3の移動方向を規制するガイド枠である。なお前記補正
カム2、ギア4、モータ5、ガイドビン8及びガイド枠
9が視野枠移動手段に相当する。又前記標準測距マーク
7は、無限から所定の至近位置(被写体距離が)までの
測距位置が該マーク内に入る様にその大きさは設定され
ており、前記至近測距マークaは、視野枠3が所定の至
近位置に移動された時の前記測距マーク7の位置に相当
する位置に表示される。
In Figure 2, 1 is the focusing lens of the photographing lens, 2
is a correction cam that is integrated with the focusing lens 1 and moves in conjunction with the focusing operation; 3 is a viewfinder field frame that moves in conjunction with the correction cam 2; 4 is fitted into the rack of the correction cam 3, and 5 is a motor for driving the gear 4, 6 is a finder optical system, and 7 is a standard distance measurement mark (AF) printed on the field frame 3 to indicate the distance measurement range; The field of view frame), 7a (see FIGS. 2(b) and 3) is displayed at a position indicating the distance measurement area on the close limit side by the distance measurement area variable means described later,
8 is a guide bin; 9 is the field frame 3;
It is a guide frame that is integrally configured with the guide bin 8 and regulates the moving direction of the visual field frame 3. Note that the correction cam 2, gear 4, motor 5, guide bin 8, and guide frame 9 correspond to viewing frame moving means. Further, the size of the standard distance measurement mark 7 is set so that the distance measurement position from infinity to a predetermined closest position (subject distance) falls within the mark, and the close distance measurement mark a is It is displayed at a position corresponding to the position of the distance measurement mark 7 when the field frame 3 is moved to a predetermined close position.

上記構成において、撮影に際しては、後述するAP回路
にて求められる測距情報に基づいてモータ5が駆動制御
され、その駆動力によりギア4が回転してフォーカシン
グレンズ1と一体的に構成された補正カム2が矢印へ方
向に移動し始め、これに伴ってフォーカシングレンズ1
も光軸方向へ移動を開始する。つまりフォーカス動作が
開始となる。又これに連動して、補正カム2のカム部に
常に当接するように構成されたファインダ視野枠3が、
ガイドビン8及びガイド枠9に移動方向を規制されなが
ら、そのカム部にガイドされて矢印B方向に移動する。
In the above configuration, when photographing, the motor 5 is driven and controlled based on distance measurement information obtained by the AP circuit described later, and the driving force rotates the gear 4 to perform correction integrated with the focusing lens 1. Cam 2 begins to move in the direction of the arrow, and focusing lens 1 moves along with this.
also starts moving in the optical axis direction. In other words, the focus operation is started. Also, in conjunction with this, the finder field frame 3, which is configured to always come into contact with the cam portion of the correction cam 2,
While the direction of movement is restricted by the guide bin 8 and guide frame 9, it moves in the direction of arrow B while being guided by the cam portion thereof.

次に、撮影時の一連の動作を第1図のブロック図を用い
て簡単に説明する。
Next, a series of operations during photographing will be briefly explained using the block diagram shown in FIG.

AP回路111からの測距情報より被写体が所定の至近
領域に居ることを検知したら、制御回路112はLED
や発音体等から成る警告回路113によりその警告を行
い、直ちにその後の撮影準備動作を禁止すると同時に、
測距領域可変手段114を駆動して、至近限界位置にお
いてパララックス(AP回路111内のAFセンサと撮
影レンズ115との間で)の無い測距を可能とする位置
に至近側測距マーク7aを表示させ(第3図参照)、撮
影者に該表示位置での測距を促す。前記測距領域可変手
段114の構成としては、例えばスーパーインポーズ表
示等の電気的手段似よるもの、或は前記測距マーク7の
ような印刷式により成り機械的手段によりファインダ光
路に対して進退可能とするもの等種々の方式が考えられ
る。
When it is detected that the subject is in a predetermined close range based on distance measurement information from the AP circuit 111, the control circuit 112 turns on the LED.
The warning circuit 113 consisting of a sounding body, etc. issues a warning, and immediately prohibits the subsequent shooting preparation operation, and at the same time,
The distance measuring area variable means 114 is driven to move the closest distance measuring mark 7a to a position that enables distance measurement without parallax (between the AF sensor in the AP circuit 111 and the photographing lens 115) at the closest limit position. is displayed (see FIG. 3) to prompt the photographer to measure the distance at the displayed position. The distance measurement area variable means 114 may be configured by an electrical means such as a superimposed display, or by a printing method such as the distance measurement mark 7, and may be moved forward and backward with respect to the finder optical path by mechanical means. Various methods can be considered to enable this.

前記至近側測距マーク7aに被写体を入れた再度の測距
操作が撮影者により行われると、制御回路112はこの
測距時にAF回路111より得られる測距情報に基づい
て、つまりAF回路111内に配置されるAFセンサと
撮影レンズ116とパララックスをほぼ無くした状態で
の測距結果に基づいて、フォーカシング駆動回路116
を介して視野枠移動手段117にて視野枠3の移動補正
を行わせ(もちろんこれに伴って撮影レンズ116内の
フォーカシングレンズ1の位置制御も行われている)、
移動による補正後、レリーズ信号発生検知により以下の
如き撮影動作を開始する。
When the photographer performs another distance measurement operation with the subject placed in the closest distance measurement mark 7a, the control circuit 112 uses the distance measurement information obtained from the AF circuit 111 during this distance measurement, that is, the AF circuit 111 Focusing drive circuit 116
The field frame moving means 117 corrects the movement of the field frame 3 via the field frame moving means 117 (of course, the position of the focusing lens 1 within the photographic lens 116 is also controlled accordingly).
After correction by movement, the following photographing operation is started upon detection of release signal generation.

撮影レンズ115を通過し、絞り/シャッタ118によ
り光量制御された被写体像は、ローパスフィルタ119
を通してCCD 120により光電変換され、撮像信号
として蓄積される。その後該撮像信号は次段の信号処理
回路121に送られ、ここで公知の信号処理が施され、
磁気ディスク等の媒体である記録部122に記録される
The subject image that has passed through the photographic lens 115 and whose light amount has been controlled by the diaphragm/shutter 118 is passed through the low-pass filter 119.
The signal is photoelectrically converted by the CCD 120 and stored as an image signal. After that, the imaging signal is sent to the next stage signal processing circuit 121, where it is subjected to known signal processing,
The information is recorded in a recording unit 122 which is a medium such as a magnetic disk.

なお第1図中、123はAE回路であり、前記絞り/シ
ャッタ118は該回路よりの情報に基づいて制御される
。又124は撮影レンズ116内の不図示のズームレン
ズのズーミングを行うズーム駆動回路であり、125は
前記CCD120を駆動するCCD駆動回路である。
In FIG. 1, 123 is an AE circuit, and the aperture/shutter 118 is controlled based on information from this circuit. Further, 124 is a zoom drive circuit that performs zooming of a zoom lens (not shown) in the photographic lens 116, and 125 is a CCD drive circuit that drives the CCD 120.

また、本実施例のカメラがビデオカメラのように連続的
に撮影を行っているものであった場合、前記視野枠3の
移動中は例えば前記警告回路113を用いて該視野枠3
が移動中であることの警告を行い、この間制御回路11
2は撮影動作を禁止するよう構成することが望ましい。
Further, when the camera of this embodiment is one that continuously takes pictures like a video camera, while the field frame 3 is moving, the warning circuit 113 is used to prevent the field frame 3 from moving.
During this time, the control circuit 11
2 is desirably configured to prohibit the photographing operation.

本実施例によれば、撮影レンズと前記撮影レンズとは独
立な光学系を有する外部ファインダ及びAP回路を持つ
カメラにおいて、被写体が所定の至近距離内に居ること
を検知したらその警告を行うと同時に、その時の被写体
距離に適した位置の測距領域の表示を行って撮影者にそ
の領域に被写体を入れた測距を促し、その後該位置にお
ける測距情報に基づいて前記撮影レンズと外部ファイン
ダのバララックス補正をすべく前記ファインダの視野枠
を移動させるようにしているので、AP回路が撮影レン
ズとの間にバララックスを持って構成されている場合で
も、正確なファインダのパララックス補正及び意図する
範囲の撮影を適正なピント合せの元で行わせることが可
能となる。
According to this embodiment, in a camera having a photographing lens and an external viewfinder having an optical system independent of the photographing lens, and an AP circuit, when a subject is detected to be within a predetermined close distance, a warning is issued at the same time. , displays a distance measurement area at a position suitable for the subject distance at that time, prompts the photographer to measure distance with the subject in that area, and then adjusts the distance between the photographing lens and external viewfinder based on the distance measurement information at that position. Since the field frame of the finder is moved to perform vararax correction, even if the AP circuit is configured with vararax between it and the photographing lens, accurate finder parallax correction and intention can be achieved. This makes it possible to photograph the range under proper focus.

(発明と実施例の対応) 本実施例において、制御回路112が本発明の判別手段
に、警告回路113が警告手段に、視野枠移動手段11
5が視野枠移動手段に、それぞれ相当する。
(Correspondence between the invention and the embodiments) In this embodiment, the control circuit 112 serves as the discrimination means of the present invention, the warning circuit 113 serves as the warning means, and the visual field frame moving means 11 serves as the warning means.
5 corresponds to a field frame moving means.

(発明の効果) 以上説明したように、本発明によれば、測距手段よりの
測距情報から被写体が所定の至近距離内に居るか否かを
判別する判別手段と、該判別手段にて被写体が所定の至
近距離内に居ることが判別されている場合にその事の警
告を行う警告手段と、該警告手段の警告時に、所定の至
近領域における適正な測距範囲位置を示す表示を行う測
距領域可変手段と、該測距領域可変手段により表示され
た測距領域において測距手段で求められる測距情報に基
づいて、前記視野枠を移動する視野枠移動手段とを設け
、以て、バララックスが生じている事の警告を行うと共
に、この時の適した測距領域位置を示す表示を行ってそ
の位置での再測距を撮影者に促し、つまり測距光軸と撮
影光軸゛のバララックスを無くした状態での測距を促し
、該位置にて得られる測距情報に基づいて、前記視野枠
を移動させて、ファインダ光軸と撮影光軸のバララック
スを無くすようにしたから、正確なファインダ視野補正
を行え、確実に被写体にピントな合せた、意図する範囲
の撮影が可能となる。
(Effects of the Invention) As explained above, according to the present invention, there is provided a determining means for determining whether or not a subject is within a predetermined close distance from distance measurement information from a distance measuring means; A warning means for giving a warning when it is determined that a subject is within a predetermined close range, and a display indicating an appropriate ranging range position in the predetermined close range when the warning means gives a warning. A distance measurement area variable means and a field frame moving means for moving the field of view frame based on distance measurement information obtained by the distance measurement means in the distance measurement area displayed by the distance measurement area variable means, In addition to warning that vararax has occurred, a display indicating the appropriate distance measurement area position at this time is displayed to prompt the photographer to remeasure the distance at that position. Promote distance measurement while eliminating the disparity of the axis, and move the field frame based on the distance measurement information obtained at the position to eliminate the disparity between the finder optical axis and the photographing optical axis. This allows for accurate viewfinder field of view correction, making it possible to reliably focus on the subject and shoot within the intended range.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例を示すブロック図、第2図(
a) (b)は第1図図示視野枠移動手段の具体的な構
成例を示す機構図、第3図は同じく第1図図示視野枠移
動手段により表示される至近側測距マークの位置を示す
正面図、第4図は従来のファインダ視野を示す正面図、
第5図はこの種のカメラの持つバララックスについて説
明する図である。 1・・・・・・フォーカシングレンズ、2・・・・・・
補正カム、3・・・・・・視野枠、4・・・・・・ギア
、5・・・・・・モータ、7・・・・・・標準測距マー
ク、7a・・・・・・至近側測距マーク、8・・・・・
・ガイドビン、9・・・・・・ガイド枠、111・・・
・・・AP回路、112・・・・・・制御回路、113
・・・・・・警告回路、114・・・・・・測距領域可
変手段、115・・・・・・撮影レンズ、116・・・
・・・フォーカシング駆動回路、117・・・・・・視
野枠移動手段。
FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 (
a) (b) is a mechanical diagram showing a specific example of the structure of the visual field frame moving means shown in FIG. 1, and FIG. Figure 4 is a front view showing the field of view of a conventional finder;
FIG. 5 is a diagram illustrating the vararax that this type of camera has. 1...Focusing lens, 2...
Correction cam, 3...Field frame, 4...Gear, 5...Motor, 7...Standard distance measurement mark, 7a... Nearest distance measurement mark, 8...
・Guide bin, 9... Guide frame, 111...
... AP circuit, 112 ... Control circuit, 113
... Warning circuit, 114 ... Distance measurement area variable means, 115 ... Photographing lens, 116 ...
. . . Focusing drive circuit, 117 . . . Viewing frame moving means.

Claims (1)

【特許請求の範囲】[Claims] (1)被写体距離を自動的に測距する測距手段と、撮影
レンズとは独立な光学系を持つ外部ファインダ装置とを
備えた外部ファインダ装置を有するオートフォーカスカ
メラにおいて、前記測距手段よりの測距情報から被写体
が所定の至近距離内に居るか否かを判別する判別手段と
、該判別手段にて被写体が所定の至近距離内に居ること
が判別されている場合にその事の警告を行う警告手段と
、該警告手段の警告時に、所定の至近領域における適正
な測距範囲位置を示す表示を行う測距領域可変手段と、
該測距領域可変手段により表示された測距領域において
前記測距手段で求められる測距情報に基づいて、前記視
野枠を移動する視野枠移動手段とを設けたことを特徴と
する外部ファインダ装置を有するオートフォーカスカメ
ラ。
(1) In an autofocus camera that has an external finder device that includes a distance measuring device that automatically measures the distance to a subject and an external finder device that has an optical system independent of the photographic lens, A determining means for determining whether or not a subject is within a predetermined close distance from ranging information, and a warning to be issued when the determining means determines that the subject is within a predetermined close distance. a distance measuring area variable means for displaying an appropriate distance measuring range position in a predetermined close area when the warning means gives a warning;
an external finder device comprising: field frame moving means for moving the field frame based on distance measurement information obtained by the distance measurement means in the distance measurement area displayed by the distance measurement area variable means; Autofocus camera with.
JP21913388A 1988-09-01 1988-09-01 Automatic focusing camera with external finder Pending JPH0266530A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21913388A JPH0266530A (en) 1988-09-01 1988-09-01 Automatic focusing camera with external finder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21913388A JPH0266530A (en) 1988-09-01 1988-09-01 Automatic focusing camera with external finder

Publications (1)

Publication Number Publication Date
JPH0266530A true JPH0266530A (en) 1990-03-06

Family

ID=16730753

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21913388A Pending JPH0266530A (en) 1988-09-01 1988-09-01 Automatic focusing camera with external finder

Country Status (1)

Country Link
JP (1) JPH0266530A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021246067A1 (en) * 2020-06-03 2021-12-09 キヤノン株式会社 Display device, control method therefor, and imaging device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021246067A1 (en) * 2020-06-03 2021-12-09 キヤノン株式会社 Display device, control method therefor, and imaging device
JP2021189359A (en) * 2020-06-03 2021-12-13 キヤノン株式会社 Display device, control method thereof, and imaging apparatus
US11874583B2 (en) 2020-06-03 2024-01-16 Canon Kabushiki Kaisha Display device, control method therefor, and imaging device

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