ISO is How sensitive the camera is to light. When using a high ISO to take pictures this can make your picture very light and 'Grainy', This can be a disadvantage when taking photos with a high ISO because this doesn't allow you to get all the detail you want and makes your picture lighter which can block out the little details you really want. When using a high ISO this makes the picture more sensitive and gives you less quality. However when using a low ISO this makes your picture better quality and more detail, This allows you to capture every little detail you want.
In this photo i made my ISO low for example i used 200, This made the picture quite dark but made the quality of the photo really good, If you look on the floor its not just a smooth purple/blue floor, It is rubbery and bumpy, By making my ISO low this has allowed me to capture the details of the floor, However if i made my ISO high this wouldn't let me capture the details of the floor.
This photo that i have taken i used a high ISO, this doesn't allow me to get the full detail as the photo is capturing to much light and is blocking out the lines on the leaves. This also makes my photo have less quality and makes the photo have a slight 'grainy' effect. For this photo i used a high ISO (3200)However, on this photo i have used a lower ISO (200), which allows me to capture a lot of detail on the leaves, For example if you look closely at the leaves you can see the very faint lines on the green leaf which you couldn't on the image above. The shadows on the leaves which overlap also stand out a lot better as the camera isn't taking in too much light. This photo is giving you more detail and a better quality image than using your ISO higher.
In this photo i have used a high ISO we can tell this because the photo is a lot lighter and looks a lot rougher rather than smooth, This also doesn't allow us to capture all the detail because when i had taken this photo the sun was shining onto the tree and we could see this, however we have used a high ISO which has made the picture that light that we can't see the sun shining onto the photo. When putting my ISO on high (3200) this hasn't allowed to to see all of the leaves on this tree either.
However on this photo i have used a low ISO we know this because we have a better quality image in front of us to look at. If we look at the leaves on this tee we can see every single leaf on each brunch, on the other hand we can't see every leaf on the picture above as the camera wouldn't let us because of how much light it was taking in. On this photo we can also see the sun shining which we couldn't on the photo above. By using a lower ISO this has allowed me to capture every bit of detail i could see with my own eyes.







































