In class today we took photos with different ISO showing lighter, and darker photos. We had the the settings on 18mm for the lens which is zoomed all the way out, we also Aperture to 3.5, the shutter speed was at 1/60, and started the ISO on 100. After taking one photo you would then move the ISO up to 200 then, 400, 800, etc. For the outside photo setting we had the lens zoomed all the way out to 18mm, the Aperture was on 7.1, the shutter speed was at 1/125, again we started the ISO on 100 then went up. For different things you can use different ISO setting like if you were taking a picture of a person in front of a sunset you would want the ISO 400 -800 because with the sun setting you want to freeze the motion to get a good picture. A advantage to being able to set ISO is that depending on the object, and the distance from it you can make it look smooth, and clear. Another advantage of a ISO is that you can have them low or, high on a low ISO setting is you can focus in on a object closely which can make it smooth you could also make the background blurry. An advantage of an high ISO setting is that you can freeze motion to make objects looks like they are sitting still. A disadvantage to ISO could be that if you don’t know what to change it to again depending on the object, and distance from it you could have grainy photos. With low, and high one disadvantage you could have is that your photos can turn out blurry, with noise or, grain but, it depends on the ISO setting, and how close the object is. Another thing you should know about is what grain is, grain is when you take a photo the object or, something in the picture isn’t completely smooth, it makes it almost blurry looking.