Modern Classic SLR Series :
Canon EOS-1N Series AF SLR camera
Exposure Control and various related issues - Part V

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c) Automatic Exposure Bracketing ("AEB")

Exposure bracketing is actually an evolved form from conventional exposure compensation; but the process is automatic activated for the user instead of manually set by the user. The Canon AEB will bracket three (3) exposures automatically up to ±3 f-stops in half (1/2) or one-third (1/3) EV stops from the camera suggested metered value. Erroneous exposures with popular negative film may (if not too far out of range) be recoverable via lab processing but for slides which has a narrower exposure latitude, bracketing exposures is a good insurance for important shots. When the battery check button and film winding mode selector behind the palm door are pressed simultaneously, the symbol "AEB" shows on the LCD. While looking at the LCD, turn the Main Dial to set the bracketing amount. The bracketing amount registers 6 sec. later, when the LCD returns to normal display. It can also be registered by pressing the shutter button halfway.

Reidar_Olsen_winter.jpg
Mailto Reidar_Olsen

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<<---For snow and others sensitive subject, erroneous exposures may not faithfully portray the subject matter, use AEB is always encouraged.

Credit: Image courtesy of Mr. Reidar Olsen® from Norway. A retired Norwegian army officer turned serious photographer. He has a Portfolio at Usefilm. Image copyright © 1996-2005. All rights reserved.
Setup AEB, Canon EOS-1N
Operation:- Set auto exposure bracketing as follows: 1. Open the palm door,press the battery check button and film winding mode selector simultaneously. 2. Turn the Main Dial until the bracketing amount is shown on the LCD (6 sec delay). The amount can be set in one-third stops up to ±3 stops (The set bracketing amount is shown in the LCD panel as both a graphic level display and a numerical value. The diagram shows the case when setting a bracketing amount of ±1-1/3 stops.). 3. When you press the shutter halfway and then remove your finger, the bracketing amount is displayed by the viewfinder's exposure level indicator.. 4. The shots are exposed in the following sequence: underexposed, suggestive correctly exposed metered value, and overexposed. The compensated exposure value for each shot is displayed in the LCD panel as the three frames are exposed, and the AEB indicator (AE-L asterick Symbol) blinks continuously until all three exposures are completed.


Auto Bracketing Over-expose Auto Bracketing Neutral Exposure Auto Bracketing Under-expose

Notes:The compensation amount for each shot is also displayed in the viewfinder by the exposure level indicator. It is possible to take one shot at a time even in continuous exposure mode. The AEB indicator (AE-L asterick Symbol) blinks continuously until all three exposures are completed. If the shutter is held completely pressed in continuous exposure mode, three frames are exposed in sequence but the viewfinder's metering level indicator is not active. Film winding automatically stops after three frames. When AEB is used in conjunction with the self-timer, three frames are automatically exposed in sequence after a 2- or 10-second delay.

To cancel auto exposure bracketing, repeat steps 1 and 2 to reset the bracketing amount to 0. Auto exposure bracketing is also canceled when the lens is exchanged, the film is replaced or rewound, bulb exposure mode is set, flash charge completion is loaded, the clear button is pressed, or the main switch is set to “Lock Button”.

Custom Function CF-9.3 Custom Function CF-6.2 Custom Function CF-12.1

There are ways to alter the setting as well. Custom Function CF-9 changes the bracketing and enables auto bracketing to be set without opening the palm door i.e. The camera can be set so that auto exposure bracketing is not canceled when the lens is exchanged, the film is loaded or rewound, or the main switch is set to “Lock Button”. (Hold down the AF and shooting mode selectors and turn the Main Dial). By setting Custom Function CF-6 to "2," the bracketing amount can be set in half (1/2) stops. Please give note when the EOS-1N has its Custom Function set for CF12 (Mirror-Lock Up) with AEB on; the camera will operate in single exposure mode regardless of the current film winding mode (single exposure, continuous exposure). Further, AEB cannot be set on the high speed Canon EOS-1N RS when RS mode is being activated.

The viewfinder display AEB options
The exposure sequence used for auto exposure bracketing is set by default to the "- --->>> 0 --->>> +" sequence which makes it easy to check the variation in exposure when the developed transparencies or negatives are viewed in plastic sleeves. With this custom function, however, it is also possible to change the sequence to "0 --->>> - --->>> + ", which makes sure the first frame receives "correct" exposure. This can be desirable when shooting live subjects or changing scenes where the first shot will most likely capture the best expression or composition.


Also, for photographers who frequently use auto exposure bracketing, the fact that AEB operation is canceled every time the lens is exchanged, main switch is set to Lock Button, or the film is rewound or exchanged can be very bothersome. This custom function provides settings which prevent the AEB mode from being canceled in such situations. Also, since the operation of buttons inside the camera's palm wing door (side door) can be troublesome if frequent access is necessary, this function allows the user to activate AEB mode using an external setting operation, which involves operating the main dial while simultaneous pressing the AF mode and shooting mode select buttons>


d) Multiple exposures (Multiple exposure Icon Larger)

Prior to arrival of the might manual focus Canon T90, multiple exposure execution with any Canon SLRs can be quite a tedious process because you have to manual using the film rewind crank to rewind the frame back to earlier page. Even the top of the line Canon NEW F-1 was not spared (especially when it relates to high speed motor driven multiple exposures operation but admittedly, for slower setup, back-frame registration is very precise; well, here, I am referring to the setup process). Believe it or not - various Canon EOS models capable of double exposures are still adopting the same 1986's Canon T90 method in setting for multiple exposures.

White Anemonies  Multiple exposures by  Merete Westerdahl
Contact: Merete Westerdahl

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<<--- White Anemonies

Credit: Image courtesy of Mr. Merete Westerdahl ® from Copenhagen, Denmark. This image was found at his Portfolio at usefilm.com Image copyright © 1996-2005. All rights reserved. Please respect the visual property of the contributing photographer.

LCD- Multiple Exposure
With the Canon EOS-1N now (same with EOS-1), up to 9 multiple exposures possible and canceled automatically on completion. Press the shooting mode and metering mode selectors simultaneously to set the number of multiple exposures. Turn the Main Dial to set the desired number of multiple exposures (To cancel, just turns the dial back to the left). Multiple exposure Icon appears in the LCD panel and the number appears in the frame counter. This number indicates the number of preset multiple exposures.

Multiple Exposure Operation 1 Multiple Exposure Operation 2
Operation:- Take up to 9 multiple exposures as follows: 1. Hold down the shooting and metering mode selectors simultaneously. 2. Turn the Main Dial to the right and set the desired number of multiple exposures. Release the selectors to register the setting. 3. Then select the exposure mode and release the shutter. After the multiple exposures are taken, the film automatically advances to the next frame. During multiple-exposure shooting, the LCD shows a blinking multiple-exposure symbol and the remaining number of multiple exposures.

To cancel multiple-exposure shooting before it starts turn the dial to 1. Further, should anytime you wish to cancel multiple-exposure shooting midway, turn the dial to blank.

NOTE:- When the preset number of multiple exposures is completed, the film automatically advances to the next frame and multiple exposure mode is canceled. “Multiple exposure Icon” blinks in the LCD panel during multiple exposure photography. When taking multiple exposures on a single frame, you should decrease the exposure value for each exposure using exposure compensation


e) Bulb Exposure (Bulb Exposure inco)

This is the equivalent of time exposure on other labels. The elapsed time can go as long as up to 120 sec. displayed. Canon EOS system has an optional Remote Switch 60 T3 convenient for bulb exposure (the 60-T3 was originally built for the manual focus Canon FD SLRs such as Canon T50, T70, T80 and T90 but this device is also usable with the EOS SLR models). Bulb exposure in the EOS-1N keeps the shutter open as long as the shutter button is pressed. The slowest shutter speed of 30 sec. is enough for general night photography. However, when longer exposure time is needed, set bulb exposure as follows:

bulb_LCD_1.gif

Operation:- 1. Press the shooting mode selector and turn the Main Dial to "bulb." Release the shooting mode selector to register the selection. 2. Turn the Main or Quick Control Dial to set the aperture. Focus the subject. 3. Hold down the shutter button for the length of the required exposure time. When Remote Switch 60 T3 is connected to the remote control terminal (at the side of the camera body), you needn't hold down the shutter button to maintain bulb exposure.

1: While pressing the shooting mode selector, turn the Main Dial to select "Bulb Exposure inco." 2: When the shutter button is pressed, the exposure time is indicated On the LCD. A battery check bar is displayed each time 30 sec. elapses during a bulb exposure. Up to three battery check bars and the number "30' can be displayed at once. They can indicate a total of 120 sec. on LCD display.

bulb_LCD_2.gif
In bulb exposure mode, the LCD panel's frame counter display counts the elapsed time from when the shutter was released, starting over every 30 seconds. One battery check bar (Bar LED) appears on the display after every 30 seconds, allowing time measurement up to 120 seconds using all three bars. LCD panel illumination is turned off during bulb exposure operation.

Canon Remote Switch 60 T3
The only problems with Bulb exposure is, for exposure longer than few seconds, it is hard to maintain steady handheld shooting. So, the Remote Switch 60 T3 is very useful for this purpose, adding the fact, it can off camera. The principle is like the the normal release shutter release cable except it is operating electronically. Canon claims EOS-1N bulb exposure operation is designed to consume very little power, realizing virtually no drain on the battery.

But bear in mind this may not be exact, as EOS-1N is not a mechanical SLR and it does consumes battery power, that is why I think Canon only offer 2 minutes exposures rather than unlimited exposure time (Theoretically, you can double exposure once for 4 minutes*.
* Note:- Optional accessory Command Back E1 features a long-release timer for timed exposures up to 23 hours, 59 minutes, 59 seconds, adjustable in 1-second increments.


f) Depth-of-Field Preview button

Depth of field is the range of focus in front of and behind the subject in which objects appear sharp. The depth of field varies from shallow to deep depending on the aperture setting, the angle of view of the lens in use and the camera to subject distance. This feature is good to supplement the Aperture Priority Auto if you prefer omit the Depth of Field AE offers in the EOS-1N. To check the depth of field before taking a picture, press the depth-of-field preview button. The camera will close down the lens’ diaphragm to the shooting aperture, allowing you to see the range of sharpness in the viewfinder. Please note: Exposure setting is locked when the depth-of-field preview button is pressed and the depth-of-field preview button does not function during the camera's autofocus operation* .

Depth OF Field  preview button Canon EOS-1n
To check the depth of field, press the depth-of-field preview button next to the lens mount. While the depth-of-field preview button is pressed, the aperture can be changed to see how the depth of field changes. Press the depth-of-field preview button to stop down the aperture to its preset value; then check the depth of field of the current aperture via the viewfinder. Turn the Main Dial to change the aperture and see how the depth of field changes. Releasing the preview button, returns the aperture to its max. setting. Please also take note:- in AE mode, pressing the preview button locks the AE and AF

* Pressing the preview button when focusing manually or with the Al Servo AF mode does not prevent the shutter from being released. in the One-Shot AF mode, the shutter can be released while the preview button is pressed, only after the shutter button is pressed halfway and focus is achieved.

White Anemonies  Multiple exposures by  Merete Westerdahl
Mailto Reidar_Olsen

<
<<--- With most modern AF lenses lack defined Depth of Field scales on the lens, DOF preview becomes an important gadget for TTL guide.

Credit: Image courtesy of Mr. Reidar Olsen® from Norway. A retired Norwegian army officer turned serious photographer. He has a Portfolio that shows many other visual works of his . Image copyright © 1996-2005. All rights reserved.

g) Self-timer Operation ( Self Timer 2 sec. Self Timer 10 sec. )

Self-timer operations are often used with group photos. self portrait etc.. But one of the best application is, it can also be used to prevent camera shake for slow speed dim light operation or even night photography, etc. Two built-in self-timer modes let you delay the exposure 10 seconds or 2 seconds from when you press the shutter button. When using the self timer, place the camera on a steady surface or use tripod if it is available.

Self Timer activating

LCD-Seltimer2sec.gif

LCD-Seltimer10sec.gif

The self timer button is not visible on the outside, instead, it is hidden inside the palm door. Set the self-timer as follows:

Operation:- 1. Press the film-winding mode selector (the button DRIVE) behind the palm door at he side of the camera. 2. Turn the Main Dial to select the self-timer delay of 2 or 10 sec. 3. After attaining focus and the correct exposure, press the shutter button to start the self-timer. The self-timer indicator will then blink and the shutter will be released after 2 or 10 sec. During self-timer operations, as the photographer may not has his eyes leeching on the eyepiece to shoot the picture, stray light, at all times, must not enter the eyepiece as the sensitive SPC cells for metering is just inside the eyepiece, which may affect its accuracy in reading the scene brightness (especially when there is a strong light source behind the camera like shooting macro vertically with the sun behind the camera). So, it is always advisable to close the eyepiece shutter. Open the palm door and press the film-winding mode selector. Turn the Main Dial to select either 2 or 10 sec.

Self Timer 2 sec.
:- 2 Seconds self-timer display. Self Timer 10 sec.:- 10 Seconds. self-timer display.

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