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Re: How do I set my aperture and my shutter speed on my...
This is a simple point-and-shoot camera. If you want to play with the aperture and shutter speed, you're going to have to spend a lot more money on a high-end point&shoot or even a DSLR.
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If you want the camera to set the shutter speed for proper exposure, turn the mode dial to the A position for Aperture Priority. Press the +/- button to display the shutter speed and aperture. Press cursor-up/down to change the aperture and the camera will change the shutter speed to give the proper exposure.
If you want to set the shutter speed and aperture yourself, turn the mode dial to M for Manual. Press the +/- button. Press cursor-up/down to set the shutter speed, cursor-left/right to set the aperture.
Full details are in the Shooting Mode section of the manual.
The aperture is the opening in the lens through which light passes to the image sensor. Changing the aperture setting allows you to control the depth of fieldof a photograph. When the aperture is opened to a widersetting, (indicated by a lower f-stop number) more light is passed to the imagesensor, creating more shallow depth of field. Closing the aperture (indicatedby a higher f-stop number) allows less light to pass to the image sensor,creating wider depth of field. NOTE:The aperture setting is one of three primary settings usedto control the overall exposure of a photograph. The other two primary settingsare ISO and shutter speed. Because the three settingswork together to produce the overall exposure for a photograph, changingthe aperture setting will require complimentary changes to either the ISO or shutter speed to produce a properly exposed photograph. These changes will bemade automatically by the camera in the Auto, Program, Aperture-priority andShutter-priority modes. There are two ways tocontrol the aperture setting on the camera:
Aperture-priority mode (A)- When shooting in Aperture priority mode (A), you set the aperture value and the camera automatically sets the optimum shutter speed for you.
Manual mode (M)- When shooting in Manual mode (M), you control both aperture and shutter speed, which gives you maximum creative control to achieve the exact results you want.
Set the exposure mode to "M" (Manual). You'll have to set both the aperture and shutter speed yourself.
You'll also get no exposure assistance from the camera's light meter. You can review the picture after taking one and/or use the histogram to tune the exposure.
M stands for 'Manual mode'. This is the mode wherein you set your shutter speed and aperture setting.
A stands for 'Aperture Priority'. This is the mode where you set the aperture or opening of the lens and the camera sets the shutter speed. The lower the aperture number setting, the more light penetrates the lens, a faster shutter speed is needed. This setting is usually used for portrait scenarios.
S stands for 'Shutter priority'. This is the mode where you set the shutter speed and the camera sets the aperture. The higher shutter speed number, the lower aperture number is set by the camera to accommodate more light into the lens. This setting is usually used for capturing moving objects like cars.
P stands for 'Program Mode'. The camera takes care of different settings except for the aperture and the shutter speed. You get to choose combinations of aperture and shutter speed settings that will not change the exposure of your scene. This is like a combined 'A' and 'S' mode with different combinations.
N stands for 'Natural Light'. The camera tries to make use of available light. This is ideal for indoor use when flash is prohibited or when you just want to capture the ambiance of the scene. The camera sets a high sensitivity setting to handle low light conditions. The drawback of this would be grainier pictures.
SP1 and SP2 stand for Scene Position 1 and 2. This is like a memory setting for most commonly used scene settings. For example, you can assign SP1 for landscape mode scene and SP2 for night mode scene. You have 13 scenes to choose from in your camera, 2 of which you can assign in SP1 or SP2. The default setting for SP1 is Portrait mode and for SP2, it is Landscape mode.
Hope this helps.
If your camera is a Rebel XS you should have a dial on the top right with a series of letters and icons. To set your camera so you manually control the shutter speed turn this dial too "TV" (Time Value). This setting will allow you to select the shutter speed and the aperture will open or close to achieve the correct exposure. The "M" is (Manual) where you would select both the shutter speed and aperture "AV" is (Aperture Value) where the user selects the aperture they want and the shutter speed increases or decreases to obtain a proper exposure. The "P" (Program) mode allows the camera to automatically select the shutter speed and aperture
Set the camera to Shutter Priority AE by turning the mode dial to S. Press the +/- button to open the setting screen, then press up/down to select the shutter speed.
You control the shutter speed the same way in Manual mode. You also select different shutter speed/aperture combinations the same way in Program mode.
You can indirectly control the shutter speed in Aperture Priority AE by changing the aperture and letting the camera set the appropriate shutter speed.
OM-20 was basically a upgraded OM-10 with the manual adapter built in and a number of other refinements.
The viewfinder has LED's to show the shutter speed recommended by the camera's lightmeter for the ISO and aperture selected. It also has an exposure compensation indicator (the +/- symbol) and an indicator for flash ready which doubles up as a post-exposure flash confirmation. There is also the indicator lamp to show manual mode has been selected. OM-10 lacks the manual mode lamp and the +/- indicator.
Like the OM-10, the OM-20 is primarily an aperture priority automatic camera. In this mode you set the ISO film speed, choose which aperture you wish to use (with the ability to use the lens depth of field preview button) and then the camera selects the correct shutter speed. The +/- exposure compensation control allows the user to tell the camera to modify the recommended shutter speed by up to two stops either way.
In manual mode, there is no manual metering. The light meter behaves exactly as it does in aperture priority mode and the viewfinder shows the recommended shutter speed and not the manually selected one. Correct metering is therefore a case of adjusting the aperture first, and then choosing the correct shutter speed indicated in the viewfinder. If the user then decides to select a different shutter speed, then the aperture ring must be adjusted to maintain the correct exposure. For example the aperture is set to f8 and the camera recommends 1/60th of a second. The user decides that a faster shutter speed is required and chooses 1/250th, but the viewfinder remains showing 1/60th. In order to keep the same exposure value the user must open the aperture by two full stops to f4. The camera's light meter will detect the new aperture setting and providing the light on the object is unchanged the viewfinder shutter speed display should now show 1/250th as well to confirm the correct adjustment. Alternatively, the user can choose the shutter speed first by looking at what has been set on the control ring (or by turning the ring to the end of its travel and then counting the clicks from there as all experienced OM users do) and then turning the aperture ring until the shutter speed shown in the viewfinder matches what's been manually set.
It all sounds clumsy and complex but is done far more quickly than I've taken to type this and becomes second nature.
Aperture priority metering is selected on the camera by choosing AUTO on the mode selecter. In this mode the shutter speed ring has no effect and the viewfinder always displays the automatically selected shutter speed.
Yes, on this camera you leave the aperture ring at f22 and use the camera's controls to set your f-stop. It won't work is you change the ring on the lens. You gain the control of the aperture in the 'M' and 'A' modes. The 'P' setting is for the camera to pick both speed and aperture for you. 'S' is shutter priority, etc
because you are (a) opening the lens aperture to let in the maximum light and (b) making the sensor more sensitive so that it requires less light, so the camera must do what it can to counter your settings - to reduce the light by minimizing the time of the exposure.
I presume this is a hypothetical question, as you don't normally want to use ISO this high with the F828 if it can be avoided.
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