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What should be the aperture be when photographing long exposure?
Wiki User
∙ 11y ago
Set the camera to Auto mode so that the camera will adjust it self according to the situation.
Wiki User
∙ 11y ago
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What are 3 things that controls exposure?
Shutter speed, aperture, and ISO are the three main factors that control exposure in photography. Shutter speed determines how long the sensor is exposed to light, aperture controls the amount of light entering the camera, and ISO adjusts the camera's sensitivity to light.
Why do pinhole cameras need long exposure times?
Because the aperture is tiny, so as to take advantage of the depth of field a small aperture will give. This lets pinhole cameras make sharp pictures without needing any way to focus them.
How long should you wait to do surgery on a patient with radiation exposure?
later
How long should you wait to conceive after exposure to thyroid scan?
2 months
Causes of long exposure with long exposure of ICT tools?
it can be blast
What are the disadvantages of a pinhole camera?
1-Extremely long exposure times, typically ranging from 5 sec. to several hours. 2-Aperture is very small. 3-photos taken from pinhole camera are not sharp. 4-shutter was manually operated.
What does the aperture do on the enlarger?
The aperture in photography is the iris of the lens. The size of the aperture determines how much light comes through the lens and can be balanced with how long the lens is open to make an exposure. The aperture controls depth of field, that is the depth of space that is in focus. The smaller the aperture the deeper this space is. A photographer may want to control the depth of field using the aperture setting to make sure the background is or is not in focus. Selective focus can be a powerful tool in a photo. If there are subjects in the composition at differing distances a greater depth of field may be required to insure they are all in focus together. An example of this might be a large group of people for instance. The depth of focus at different f/stops will vary per the focal lens and design of different lenses. In general it will be greater at a given aperture with a wider lens and shorter with a longer (telephoto) lens. Also the closer your subject is the the camera the narrower the depth of focus as the depth increases with distance. An extreme example is f/8 for a given lens may produce a focal depth of 2ft for a subject 10' from the camera, this may be only 4" when the subject is 2' from the camera and may be infinite (50'-infinity) when the subject is 60' from the camera. This property can be used in the design off your photo for practical or artistic purpose. Because Aperture, shutter speed and ISO are tied together in determining an exposure changing the aperture may require also changing one of both of the other with some trade-offs such as a slower shutter speed which may result in blur due to movement (by the camera and/or the subject) or increased noise is the ISO needs to be raised significantly. 09/24/12 John Lacy, Proshooter.com
What is the best way to photograph the moon with a digital camera?
You will need a tripod as long exposure is involved with photographing the moon. You will also need a fairly long lens - the moon, particularly on the horizon looks larger than it actually is, the camera lens is not fooled by this and the part of the image taken up by the moon will be quite small even with a longish lens (around 200mm say). Assuming you've armed yourself with a tripod and a telephoto lens, then the other problem is exposure. At night, the moon is, effectively a bright blob in a large area of black. The camera exposure system assumes you are photographing an average gray scene (by average, I mean 18% gray). The result is that if you use the camera exposure system set to automatic, the moon will be very over exposed - perhaps by 3 or 4 stops. There are a number of ways around this: # With an ISO setting of 100, the correct exposure is around 1/90 at F16. Set your camera to manual exposure and use that setting. If the ISO doesn't go down that low then you will need to adjust the aperture or exposure time appropriately. # Use a spot exposure facility (if your camera has that) and expose on just the moon. # Use exposure compensation and take the exposure down by 3 stops. Between shots, look at the preview screen on the back of the camera and see what the image looks like - making adjustments as appropriate. Although it doesn't look like it, the moon is moving quite quickly across the sky and you'll need to adjust the tripod regularly to keep the image in the viewfinder.
What are the odds of photographing thunder?
Odds, if you are taking a picture of your family and there is a thunder somewhere on the picutre - these are close to none. However, if you want to take a picture of thunder there are two cases: 1. Photographing thunder in daylight. This task is pretty hard because of camera's response time and your reaction time. Simply pressing shutter release while thunder is hitting ground might result in a picture taken just after, which we don't want to take. SLR camera is advised since they are the fastest available. 2. Photograping thunder at night. This task is quite simple to achieve and no SLR camera is required. What you have to do is to set up long exposure time, close aperture a little bit and point your camera at some nice landscape. Several shots later you'll catch a thunder if you're patient enough.
How does aperture affect pictures?
small aperture= short focal range (this means less of the picture will be in focus...sounds like a bad thing but creates more artistic photos with blurry background and sharp subjects) large aperture= long focal range (objects far and close will remain in focus)
Why should long handled tongs be used to move radioactive source?
Control of exposure to radiation is driven by 3 factors- time, distance, and shielding. Radiation is subject to the "inverse square law- doubling distance reduces exposure by the inverse square- so a little distance (long handled tongs) reduces exposure a LOT.
What two parts of a camera controls the amount of light reaching the film?
The Shutter and the Aperture are the two controls the Shutter is used to control how long the Film is exposed for and Aperture is used to control how much light is let in
