In Digital Photography ISO measures the sensitivity of the image sensor.
The same principles apply as in film photography – the lower the number the less sensitive your camera is to light and the finer the grain.
Higher numbers mean your sensor becomes more sensitive to light which allows you to use your camera in darker situations. The cost of doing so is more grain (although cameras are improving all the time and today many are able to use high ISO settings and still get very useable images).
2nd. Shutter Speed & Aperture-
Shutter speed is the speed of your camera shutter like how fast it opens and closes to take a photo. Shutter speeds generally range from as fast as 1/4000th of a second to as long as 30 seconds. A fast shutter speed lets in less light and gives the effect of freezing an object in motion. Fast shutter speeds (such as 1/2000th of a second) are especially useful in bright light or when trying to capture photos of things that are moving fast, such as athletes and wildlife. Slower shutter speeds are good in low light when you need to let more light in or any time you want the effect of blur and movement. All those pictures you’ve seen of waterfalls and rivers that are blurred to oblivion? Those were taken with slow shutter speeds.
In Samsung pro mode they Included the Aperture within the shutter speed section (on phones who have dual aperture camera setup F1.5 and F2.4).
Now what is Aperture?
Aperture can be defined as the opening in a lens through which light passes to enter the camera. It is expressed in f-numbers like f/1.4, f/2, f/2.8 and so on to express the size of the lens opening, which can be controlled through the lens or the camera.
Now there is one nore thing to mention is the things like Aperture, ISO and Shutter Speed are interlinked if you change one of them you have to adjust other 2 too to get better results, This is called ExposureTriangle. For example lemme put down a reference chart down here -
Tapping the AF icon will allow you to manually focus. Most of the time you’ll probably be fine to stick to autofocus, but for certain subjects, such as close-ups, using manual focus can ensure you get exactly what you want sharp.
Tap on the setting and use the slider to move between the closest focusing setting – which is represented by a flower icon – and the furthest focusing setting – represented by a mountain.
5th. White Balance (Color temperature again)-
Slide along the coloured bar to change the setting, and you’ll see various K numbers, as well as icons (such as a sun, or a lightbulb) pop up to help you pick the most appropriate one for the shooting scenario you’re in.
6th.Exposure Compensation-
If you tap the +/- icon you can adjust the brightness of your image by sliding along between -2 and +2.
Drag the slider to the left when shooting in bright conditions to help prevent over exposure (where the image is too bright), or to the right in darker conditions to help prevent under exposure (where the image is too dark).
This option comes in particularly useful where lighting is mixed and the phone might find it tricky to accurately determine the best exposure setting.
