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Autofocus (AF)

TTL "Zero-In" System

An exceptionally accurate TTL "Zero-In" elec-

tronic focusing system, which works on the princi-

ple that image discrepancy is zero when an object

is correctly focused, is employed by the

OM77AF.

Light passing through the focus-mirror is passed

through an infrared cut filter, a correction lens and
then projected onto a CCD "Zero-In" sensor where

it is converted into electrical signals. Using these

signals to determine the image discrepancy, a CPU,

by reference to a lens-mounted ROM, calculates

the appropriate lens rotation and transfers this

information to an AF motor. This single calcula-

tion/focus correction sequence results in quick and

accurate focusing. Additionally, when the Power
flash Grip 300 is connected, the focus information

is used to provide precise distance information for

perfect flash-exposure control.

Содержание 77AF

Страница 1: ...INSTRUCTIONS ...

Страница 2: ...capable of synchronizing with any shutter speed up to 1 2000 sec the OM77AF offers the user a simple error free method of attaining professional level results in areas such a fill in flash photography Before using the camera please study this instruction manual carefully with the OM77AF in front of you so that you can get the very best performance and service life from your new camera The followin...

Страница 3: ...et Button 34 Using the Self Timer 35 Using an OM Lens 37 Taking Photographs III 40 Using the Power Flash Grip 300 41 Using the Full Synchro Flash F280 44 Using the T20 and T32 Electronic Flashes 48 Using a Conventional Auto Flash 51 To Take Better Photographs 54 Autofocus AF 55 Program 57 TTL Direct OTF Light Metering 63 Viewfinder Display 64 LCD Panel 65 OM Lenses 66 OM AF System 67 Notes on Usin...

Страница 4: ...Preparationsbefore Taking Pictures 3 ...

Страница 5: ...p 300 Batteries Remove the battery cover on the bottom of the grip Do not use different types of batteries or new and old batteries at the same time Remove the batteries if you are not likely to use the camera for a long time 1 4 ...

Страница 6: ...2 Insert the batteries in the correct directions and replace the cover To remove the grip slide the grip lock knob and push down on the grip 4 LR03 AAA batteries 5 ...

Страница 7: ...and and then push up until it locks Note Slide the power switch OFF when loading batteries or replacing the grip 6 To replace the grip align with the indicators ...

Страница 8: ...Remove the battery cover on the bottom of the grip Loading the Power Grip 100 Batteries 1 2 Insert the batteries in the correct directions and replace the cover 7 4 LR03 AAA batteries ...

Страница 9: ...To remove the grip slide the grip lock knob and push down on the grip To replace the grip align with the indicators and and then push up until it locks 8 ...

Страница 10: ...Mounting an AF Lens To mount an OM lens refer to page 37 Remove the rear lens cap and the body cap 1 9 ...

Страница 11: ...ot touch the lens release button when mounting the lens Remove the front lens cap Removing the Lens Press the lens release button and turn the lens counterclockwise 10 Align the red dots and slowly rotate the lens until ...

Страница 12: ...Taking Photographs I With autofocus and programmed exposure the OM77AF puts the fascinating world of SLR photography at your fingertips a perfect shot is only a press of the shutter release away 11 ...

Страница 13: ...ower Slide the power switch ON 1 Film speed and battery condition are shown for 1 5 sec OK Battery power below 50 Change the batteries When power is switched ON the lens is set to and all functions reset see page 28 12 ...

Страница 14: ...the Film Loading and film speed selection for DX film are automatic Use only lSO 100 when using non DX film Make sure film is DX type To open the back press the locking button and slide the release knob 2 1 13 ...

Страница 15: ... insert the film cartridge Take care not to touch the shutter curtain with your finger or the film leader 4 5 Align the film leader with the mark and gear the sprocket teeth to the film perforations Close the camera back and 14 ...

Страница 16: ...he film is automatically wound on until the exposure counter reads 1 When the film is incorrectly loaded blinks Reload the film Film type confirmation is possible through the window in the camera back 15 ...

Страница 17: ...TakingPhotographs Press the shutter release halfway to activate the viewfinder display 1 The display continues for 30 sec Frame your subject 2 Do not touch the front most part of the lens 16 ...

Страница 18: ...ter of the autofocus frame 3 Press the shutter release halfway to focus 4 Under exposure warning blinks Over exposure warning blinks 17 A green light indicates the subject is in focus A red light indicates autofocus is not possible ...

Страница 19: ...oor light conditions the autofocus illuminator is automatically activated to determine the correct distance However there are some cases depending on the type of lenses used in which it cannot be used Even in these conditions the subject distance can be determined when using the F280 18 ...

Страница 20: ...When battery power falls below 50 blinks after each shot and charge time is increased when using the Power Flash Grip 300 therefore changing the batteries is recommended 19 ...

Страница 21: ...Rewinding the Film 1 Film rewind is also automatic Confirm that you have reached the end of the film R blinks While sliding locking knob press the rewind button 2 20 ...

Страница 22: ...On completion of rewind the shutter is released flashes and the frame counter reads 0 Open the camera back and remove the film The film is completely rewound into the cartridge 3 21 ...

Страница 23: ...II With a Continuous AF mode and a Program Shift that lets you choose at any time to shift within the program in an aperture or shutter preferred manner the OM77AF provides for the expression of every photographic idea 22 ...

Страница 24: ...ecially useful whan shooting moving subjects As soon as the subject is in focus the picture is taken and the film wound to the next frame This process Is repeated as long as the shutter release is held down Press the DRIVE button to enter the mode Press the shutter release 23 ...

Страница 25: ...ocus Useful when autofocusing on a subject is difficult Refer to page 51 Press the AF PF selection button to enter the PF mode blinks Slide the shift knob 1 2 24 Green LED in the viewfinder blinks during power focusing ...

Страница 26: ...he right the lens focuses on closer subjects When shifted to the left the lens focuses on farther subjects Be sure not to press the lens locking button while using the power focus as this will put the camera into autofocus mode 25 ...

Страница 27: ...Light pressure Fine adjustment Firm pressure High speed adjustment When the subject within the focusing screen is in focus press the shutter release 3 26 ...

Страница 28: ...Using the Program Shift Aperture and shutter speed can be set freely while maintaining correct exposure Press the AF PF selection button to enter the AF mode 1 27 ...

Страница 29: ...Slide the shift knob 2 PROGRAM blinks Continue pressure on the knob until the desired shutter speed aperture combination appears in the viewfinder 28 ...

Страница 30: ...Continuous change Shutter speed increases Shutter speed decreases Faster shutter speeds will stop action Large apertures will keep your subject sharp and back ground out of focus Smaller apertures will maximize sharpness throughout your picture 29 ...

Страница 31: ...Using the Focus Lock System Press the button to enter the SINGLE mode 1 2 Press the shutter release lightly making sure the center subject is in focus green LED lights 30 ...

Страница 32: ...3 While pressing the shutter release lightly change the composition of the picture as you like Press the release fully to take the photograph 4 31 ...

Страница 33: ...Useful for shooting against strong backlight The AE and AF locks can be used together on the same subject 1 2 To eliminate extraneous light approach the subject so that it fills the viewfinder Press the AE lock button 32 ...

Страница 34: ... AE lock button change the composition of the photograph as desired 4 Still holding in the AE lock button press the shutter release Using the AE lock the subject is properly exposed no matter what the background lighting conditions 33 ...

Страница 35: ...tton Press the reset button 1 _ modes and any program shift will be cancelled and the mode set to PRO GRAM SINGLE 2 The lens will be reset to 3 The ISO speed will be displayed 4 The battery condition will be displayed 34 ...

Страница 36: ... Self Timer The camera should be fixed firmly for example on a tripod Press the self timer button indicates self timer activation Press the shutter release lightly to focus on your subject green LED lights 1 35 ...

Страница 37: ...nd the self timer mode will be released To avoid incorrect exposure in the self timer mode ensure that strong light does not enter through the viewfinder The self timer can be cancelled by any of the following methods 1 Pressing the self timer button again 2 Pressing the reset button 3 Turning the power OFF 36 ...

Страница 38: ...he OM77AF switches to aperture preferred auto mode Autofocus is not available 1 Align the red dots and rotate the lens until it locks Select either SINGLE mode for single frame winding or mode for continuous winding 2 37 ...

Страница 39: ...3 Select an appropriate aperture Turn the focus ring to focus on the subject 4 5 Compose the shot and press the shutter release 38 ...

Страница 40: ...it is free CAUTION The lens cannot be removed by pressing the lens locking button on the camera s body In Focus Focus Impossible LED shutter speed or aperture indication will not appear in the view finder the self timer will be inoperable and the Super FP Flash mode of the F280 will not be available 39 ...

Страница 41: ... autofocus SLR with a built in flash When connected to the Full Synchro Flash F280 the first electronic flash in the world capable of synchronizing with all shutter speeds up to 1 2000 sec it can be used in any light conditions to provide for simple fill in flash photography at a touch of the shutter release 40 ...

Страница 42: ...Using the Power Flash Grip 300 Press the flash pop up lever to release the flash and begin charging 1 2 back or the indicator in the viewfinder 41 Check the charge indicator on the Power Grip s ...

Страница 43: ...Press the shutter release 3 Check theflashindicators will blink to indicate correct exposure does not appear if the subject wasunderexposed 4 42 ...

Страница 44: ...ash reflector with your fingers The flash area is sufficient for lenses as wide as 36 mm The flash will not operate at speeds greater than 1 100 sec or before completing recharge Charging stops when the power switch is turned OFF or when the viewfinder display disappears Refer to page 16 43 ...

Страница 45: ...Using the Full Synchro Flash F280 A fully synchronized flash that is useful for fill in flash photography as well as at night Slide the F280 into the shoe and secure it with the lock screw 44 1 ...

Страница 46: ...2 Turn the power switch ON and set the mode switch to OM 707 OM 77AF A Super FP or Normal OTF Flash will be selected automatically depending on the subject brightness 3 Check the charge indicator 45 ...

Страница 47: ...Flash mode In the Normal OTF Flash mode the working range is 1 m 7 m 3 3 23 ft 50 mm F1 8 lens You should consult the flash instruction manual for full details Press the shutter release 4 When in bright places lights and the unit fires in the Super FP Flash mode 46 ...

Страница 48: ...5 Check the flash emission blinks to indicate correct exposure in the Normal OTF Flash mode turns off to indicate under exposure In the Super FP Flash mode blinks to confirm a Super FP Flash 47 ...

Страница 49: ... Flashes Can be used In OTF AUTO flash mode 1 Slide the unit into the shoe secure it with the lock screw and ensure that the calculator panel is inserted so that full automatic control by OM 2 isdisplayed 2 Turn the power switch ON 48 ...

Страница 50: ...e charge indicator lights up and the flash will fire when a shutter speed slower than 1 100 sec is required The flash working distance varies according to the lens maximum aperture and the shooting environment 49 ...

Страница 51: ...4 Press the shutter release button 5 Check for correct exposure blinks to indicate correct exposure No indicates under exposure 50 ...

Страница 52: ...Usinga Conventional Auto Flash Press the button to enter the mode The camera is set to f4 at 1 100 sec The mode is not available when using the T20 T32 F280 or the Power Flash Grip 300 1 51 ...

Страница 53: ...2 Set the flash to work at f4 Press the button to cancel the mode after use Pressing the reset button also cancels the mode 3 52 ...

Страница 54: ...s without an F4 mode cannot be used If a lens with a maximum aperture smaller than f4 is used slight under exposure will resuIt When using a non AF OM lens set the aperture to f4 The shutter will be set at 1 100 sec 53 ...

Страница 55: ...ke Better Photographs The following pages are presented to assist those who wish to improve their photographic tech nique Please read them carefully apply the techniques and expand your creative horizons 54 ...

Страница 56: ... then projected onto a CCD Zero In sensor where it is converted into electrical signals Using these signals to determine the image discrepancy a CPU by reference to a lens mounted ROM calculates the appropriate lens rotation and transfers this information to an AF motor This single calcula tion focus correction sequence results in quick and accurate focusing Additionally when the Power flash Grip ...

Страница 57: ...orrectly focused In any of these situations you can try focusing on a subject at a similar distance and then using the Focus Lock pages 30 31 recompose your picture or you can use the Power Focus mode pages 24 26 to focus manually Subject without vertical lines Subject without contrast Rapidly moving subjects Two subjects within the focusing frame at different distances Excessively bright light at...

Страница 58: ...m appropriate to the present focal length of the mounted lens while the Manual Program Shift lets the user shift shutter speed and aperture at any time and employ the program as an aperture or shutter speed preferred auto exposure program These two functions combine to produce a camera that can satisfy the demands of the begin ner as easily as those of the more advanced SLR user 57 Shutter speed 5...

Страница 59: ...tomatically shift programs in line with the focal length changes of zoom lenses In the wide angle program mode Program chart for lenses below 35 mm depth of field is given priority The standard program mode Program chart is used for lenses in the 90 mm and above gives higher priority to the shutter speeds needed to avoid camera shake 58 Shutter speed Aperture 35 89 mm focal length range The teleph...

Страница 60: ...f aperture and shutter speed is in accordance with the Standard Program Program chart By using the shift knob the photographer is free to shift the program line by 1 2 stops to reach a desired shutter speed or aperture In this way and with no need of any physical adjustment the program can be used as an aperture or a shutter speed preferred program depending on the photographer s intention 59 Shut...

Страница 61: ...t will fire automatically only when natural light requires a shutter speed of 1 100 sec or slower The shutter speed will be set at 1 100 sec in this case and the aperture deter mined by the AF CPU on the basis of the absolute distance of the subject Flashmatic method as illustrated by the dotted line in the chart 60 ISO 100 Shutter speed Aperture ...

Страница 62: ...the more usual poor light situation The aper ture is set at f4 or if this is not available the maxi mum aperture of the lens and when natural light requires a speed of 1 100 sec or slower a Normal OTF Flash is produced when a higher speed is required a Super FP Flash is produced auto matically After the shutter speed reaches 1 2000 sec the aperture is adjusted to provide correct exposure 61 Shutte...

Страница 63: ...mple while correct exposure is assured by the camera s TTL Direct OTF program which con trols the amount of light emitted in accordance with the distance of the subject When using a T Series Flash the aperture is set at f4 the shutter speed is set at 1 100 sec and a flash fired only when a shutter speed of 1 100 sec or slower is required 62 Shutter speed Aperture ...

Страница 64: ...e automatic exposure even when there are sudden changes in illumination during the exposure or when it is difficult to determine the light condi tions beforehand as is the case in macro photo graphy When a flash unit is employed metering requires no effort whatsoever even when you employ T Series units for bounce or diffused light techniques In addition when combined with the Full Synchro Flash F2...

Страница 65: ...in focus Red LED autofocus is not possible Shutter Speed Indicator Aperture Setting Indicator Super FP Flash Indicator Lights charged Blinks to indicate use of Super FP Flash Normal OTF Flash Indicator Lights charged Blinks correct Normal OTF exposure Power Focus Indicator 64 ...

Страница 66: ...ographers adjustments with information on the camera s operating condi tion The following information is displayed at the appropriate time Normal Flash mode display Self timer display Power focus Autofocus Exposure mode Battery condition ISO speed Exposure counter Drive mode selected 65 ...

Страница 67: ...ally select the aperture preferred AUTO mode and a shutter speed appro priate for the aperture selected by the photo grapher This allows the user to vary depth of field for a variety of creative effects a small aperture for a photograph in which everything is sharply defined or a large aperture which by blurring the back and foreground emphasizes the subject There is no viewfinder display for in f...

Страница 68: ...8 mm F2 8 Power Flash Grip 300 AF Zoom 35 70 mm F3 5 4 5 Power Grip 100 AF Zoom 28 85 mm F3 5 4 5 Dioptric Correction Lens 2 with Eyecup AF Zoom 70 210 mm F3 5 4 5 Eyecup 2 AF Macro 50 mm F2 8 Recordata Back 100 AF 24 mm F2 8 TTL AUTO Cord F 0 6 m AF Zoom 35 105 mm F3 5 4 5 Available in near future 67 ...

Страница 69: ... Zuiko 600 mm F6 5 and Zuiko 1000 mm F11 lenses all Motor Drive Group units the Auto Bellows TTL Auto Cord T0 3 0 6 2 5 m TTL Auto Multi Connector TTL Auto Connector T20 Slide Copier Roll Film Stage and Trans llluminator Base X DE the Electronic Flash T45 Interchangeable Focusing Screens Recordata Backs for other OM cameras Polarizing Filter POL Filter R60 R1 T10 Ring Flash 1 T8 Ring Flash 2 and M...

Страница 70: ...Handling Care Take care in handling the camera Do not use extra force 69 ...

Страница 71: ...Storage Care Battery Precautions Guard against high temperatures and magnetic field In case of malfunction take the camera to your nearest Olympus service station 70 ...

Страница 72: ...ct difficult for autofocus page 56 Q The indicators in the viewfinder disappear while shooting A They automatically disappear after appearing for 30 seconds in order to save battery power To re display them lightly touch the shutter release button Q The AF illuminator lights but the camera does not focus A It may not focus even when the subject is close if the subject reflects little light as when...

Страница 73: ...nd a small quantity of pure alcohol Slowly wipe the lens with a spiral motion from the center outward Q How do I clean the camera A Dust moisture and salty air are harmful to cameras and lenses Wipe the camera surfaces clean and let dry after using it in rain or mist When used near the sea wipe it off with a cloth moistened with clean water then clean and store it Q Why are there sometimes scratch...

Страница 74: ...Description of Controls 1 Pop Up Flash 6 Autofocus Illuminator 5 Rubber Grip Section 2 Power Flash Grip 300 3 Grip Lock Knob 4 Lens Locking Button 73 ...

Страница 75: ...n 17 Flash Pop Up Lever 8 AF PF Switching Button 16 Shoulder Strap Eyelet 15 Reset Button 14 Shutter Release Button 11 Hot Shoe 13 Main ON OFF Switch 12 LCD Panel 10 F4 Mode Button 9 Single Continuous Switching Button 74 ...

Страница 76: ...amera Back Release Locking Button 20 Eyepiece 21 AE Lock Button 22 Shift Knob Power Focus Program Shift 18 Camera Back Release Knob 23 Film Window 24 Tripod Socket 25 Rewind Button 26 Rewind Locking Knob 75 ...

Страница 77: ...cus ring Light metering method Exposure control TTL Direct OTF Metering center weighted average light measurement Exposure modes Multi program 1 Program 2 Program shift by shift power focus knob 3 Automatic program shift based on focal length of lens 4 Aperture preferred AE when usingOM lens Program auto exposure Type Electronic shutter with automatic control of shutter speed and aperture Light me...

Страница 78: ... end Battery life With Power Flash Grip 300 8 rolls or more using flash for 50 of exposures With Power Grip 100 25 rolls or more Using LR03 AAA alkaline manganese bat teries normal temperatures 24EX film Exposure counter Progressive type displayed on LCD panel Film rewind Automatic rewind with rewind but ton Automatic stop at film end Self timer 12 sec delay electronic self timer Power source Supp...

Страница 79: ...grip with built in flash Power switch After mounting controlled by camera s power switch Shutter release Electromagnetic shutter release for OM77AF Battery life Sufficient for 8 rolls or more using flash for 50 of exposures alkaline manga nese normal temperatures 24 Ex film Camera mount Exclusive slide bayonet mount Electrical connection with camera Cordless direct contact Guide number 12 ISO 100 ...

Страница 80: ......

Страница 81: ...1 OLYMPUS CORPORATION Crossways Park Woodbury New York 11797 U S A Tel 516 364 3000 OLYMPUS OPTICALCO EUROPA GMBH Postfach 104908 Wendenstrasse 14 16 2000 Hamburg 1 West Germany Tel 040 23773 0 OLYMPUS OPTICAL CO U K LTD 2 8 Honduras Street London EC1Y OTX England Tel 01 253 2772 PRINTED IN JAPAN 1186 15MS ...

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