It's arguable that there is no single "best" ISO (film speed). Everything is relative, and depends on what the user expects, whether using a film or digital camera.
Most digital cameras do have an optimum ISO for the best combination of speed and resolution, but again, it's relative. If you are shooting in excellent light and your subject is not moving - better yet, your camera is mounted on a tripod - then you might choose an ISO of 64. But what if you are trying to shoot a rodeo under stadium lights? Then an ISO of 1600 or even 3200 might be better, provided you accept the fact that there will be a great deal of visible "noise" or grain (noise is just the digital equivalent of film grain).
If you take all of your pictures in bright sun with, say, a 5 megapixel camera or 35 mm film camera you will probably be delighted with an ISO of 100 for all purposes. This speed can be hand held under most conditions and yields a very high quality 8x10 or even larger print with no visible noise or grain.
If, on the other hand, you are an "available light (or dark) freak," you want to be able to hand hold your camera in low light without flash, and that mandates higher ISO (speed) and more noise (grain). Thus, if you know you're going to the rodeo tonight, you may want to load your camera with Fujicolor 1600, or boost your digital's ISO to 1600 or so. But don't forget that you must be reconciled to seeing that noise or grain in your prints, even 4x6's. (This retired old pro loves the fact that even many entry level digital cameras can be instantly switched from ISO 64 to as high as 3200 and back on demand!)
The sensitivity of the light sensor is measured in ISOanalogous to photographic film's sensitivity to light, its "film speed," which is described by ISO 5800:1987. Hence, the film's speed is often referred to as its "ISO number." ISO (International Standards Organization). In digital Photography the higher the iso, the greater the risk of "noise" in the image. Digital image "noise" appears as colored dots all over the image especially noticeable in the darker regions.
ISO replaced ASA in modern cameras. It is similar to the old "f#" settings for camera shutter speed. Bright light would require a lower ISO. (See: http://www.photoxels.com/tutorial_iso.html)
An ISO range is how much a camera can electronically brighten a photo. It can be anywhere from 80 all the way up to 12,800. The only problem with higher ISO is the fact that when you use higher ISO it creates noise in the image making the quality of the photo deteriorate.
The functional opening is the aperture, the opening that controls the amount of light that hits the photosensitive surface. You may have a camera with interchangeable lenses that screw into and out of the camera's body. The opening into which the lens is screwed is not the aperture.
ISO stands for International Standards Organisation, it comes from when the sensitivity of films became standardised. It refers to the speed that your camera responds to light. The higher the ISO number the more sensitive the film or digital sensor is to light. If you choose to use a lower ISO(lower sensitivity) setting you will have to have a longer exposure, this is known as slow film. Fast film is when you have a higher sensitivity and a faster exposure. A higher ISO setting allows a faster shutter speed with the same aperture setting, this means the picture will have less Blur. The downside it that the Higher the ISO the more noise (or grain) your image has.
The ISO speed, shutter, and aperture are all interconnected. There is never necessarily one "correct" setting for all 3. However, if you're not shooting on a tripod, you probably want to set your shutter speed to 1/60 to reduce camera shake. To eliminate grain, you may want to keep your ISO below 400. It may be cloudy on a rainy day, so you may be able to shoot at f/8 or f/11. Of course, on most digital cameras you could select a shutter priority (meaning the camera will adjust the aperture for correct exposure at a shutter speed of 1/60) and then set your ISO to 400. The camera will automatically meter the scene and set the aperture correctly.
If the camera has a "shutter priority mode", usually called "S mode", then the shutter speed is controlled directly by the user when the camera is in this mode, by moving a dial or pressing a button (or both). If the camera has a "manual" mode, usually called "M mode", then the shutter speed and aperture are both controlled directly by the user by moving dials or pressing buttons (or both). Some cameras have automatic modes which allow the user to control the minimum and maximum shutter speeds that will be selected by the camera when considering all other factors. If the minimum shutter speed is reached, the camera will increase the ISO or aperture size to compensate for under-exposure. If the maximum shutter speed is reached, the camera will decrease the ISO or aperture size to compensate for over-exposure.
The lowest ISO in a camera is about ISO 50.
ISO settings indicate the sensitivity of a DSLR camera. Most DSLRs offer 100 to 1600 ISO settings. The highest end cameras feature settings from 50 to 3200 or even 6400 ISO. The Kodak DCS digital camera is the highet ISO camera on the market with 6400 ISO.
Lots of camera enthusiasts in forums online will agree that the Canon SD850/950 IS is the best camera to use in a low-ISO environment.
It's how sensitive the film is to the light. Which is measured in ISO. If you use a film camera. The film box should say what ISO it is. If you have a digital camera, you can adjust it in certain modes in the menu. For more details you can check out http://www.geofflawrence.com/photography_tutorial_ISO_film_speed.htm
High ISO pictures will tend to generate more noise, but the camera and lens used will have an impact when doing comparisons. Camera ABC may have a full frame sensor and a fast lens, and can thus hit ISO of 3200 with no problem, whereas camera XYZ has an APS-C sensor and a consumer lens and produce the same amount of noise at only ISO 800.
the brightness setting
Tutorials on how to set the ISO on a camera can be found on several sites that provides tutorials such as Veoh, Youtube, Dailymotion, Online Tutorials and many more.
An ISO range is how much a camera can electronically brighten a photo. It can be anywhere from 80 all the way up to 12,800. The only problem with higher ISO is the fact that when you use higher ISO it creates noise in the image making the quality of the photo deteriorate.
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.
Most cameras have a built in button for the ISO function. You can click on it and then change the number. If there's isn't a button you should check the different settings menus for that option.
The DX2 has a wide range of shutter speeds from ISO 100 to 800, with an ISO boost from 1,600 to 3,200. It has 12.4 megapixels for high quality images.
No. However it has an amazing 8 mp camera that holds many features including incredible ISO Ranges (No pun intended).