ISO
International Standards Organization, is the sensitivity to light as pertains to either film or a digital sensor.
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ISO originally referred to the sensitivity of film—it's "light gathering" ability. The higher the ISO rating, the greater the film's ability to capture images taken in low light. High ISO film was called fast film—it required a shorter exposure than a low ISO film. For digital photography, ISO refers to the sensitivity—the signal gain—of the camera's sensor...... more
ISO : how sensitive the sensor is to light.
The D3500,can go all the way up to ISO 25600
The higher the ISO sensitivity is set, the faster the shutterspeed you can use and the smaller the aperture. (Counterintuitively, a smaller aperture corresponds to a higher number. That is, ƒ/22 is a much smaller aperture than ƒ/4.) more.....
.....In both film and digital photography, the higher the ISO, the more grain you’ll have in the image. In digital photography, noise is the by-product of the increased electric charge needed to make the sensor more sensitive to light and looks like speckles on the image. The consequence of more noise, however, is a rougher-looking image and a decrease in image quality....more
The ISO setting is one of three elements used to control exposure; the other two are f/stop and shutter speed.
Shutter speed does it by controlling the time that the sensor is exposed to light. Lens aperture controls how large the opening is—a larger opening lets more light in. ISO refers to something a bit different: how sensitive the sensor is to light.....more.
The higher the ISO sensitivity is set, the faster the shutterspeed you can use and the smaller the aperture. (Counterintuitively, a smaller aperture corresponds to a higher number. That is, ƒ/22 is a much smaller aperture than ƒ/4.)
Why Change the ISO, Anyway?
Why Change the ISO, Anyway?
Why is setting the ISO at 100 a safe option?
On the back of the camera, just above the main utility ring, you’ll see an i button. Press that to bring up the quick menu. You can then use the dial on the back to move across to the ISO box.
The Nikon D3500 -The minimum ISO is fixed at 100.
Setting up and shooting in Manual mode
Turn your camera on, and then turn the Mode dial to align the M with the indicator line.
Select your ISO by pressing the i button on the back of the camera.
Press up or down on the Multi-selector to highlight the ISO option, then select OK.
What is Auto ISO?
What is Auto ISO?
Auto ISO is one of the innovations made possible with digital photography. It makes the ISO calculation available to the camera’s automatic exposure calculations so that it can be adjusted automatically from shot to shot.
With Auto ISO enabled, if you’re shooting in manual mode (M), ISO will be the only part of the exposure triangle that the camera adjusts on the fly. If you’re shooting in aperture-priority mode (A), you’ve manually selected the aperture, so it will adjust shutter speed and ISO on the fly. If you’re shooting in shutter-priority mode, you’ve manually set the shutter speed, so it will adjust aperture and ISO on the fly. And if you’re shooting in P, it will find a balance between all three
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