@alishaloo: I have a Canon 7D (pro grade DSLR) with multiple lenses.
Ill explain those to you:
ISO, aperture (or Fstop) and shutterspeed are the 3 ways to adjust the amount of light coming into your image. So you can get A similar looking pic with different combinations of the 3. But there is a sweet magic formula depending on the kind of pic you want- the presets (portrait, landscape, action) are all different combos that correlate with different combos of the 3. Shooting manually is always ideal though because you are smarter than your cameras auto setting, and you know what kind of pic you want.
ISO is like the “film speed”. so for a bright sunny day you’ll go with 200-300, darker surrounding maybe 600 or 800- see how high your camera goes. In general you want to keep this as low as you can get away with- because the higher the ISO the grainier the pic (think of blurry filmy grainy night pics)
Aperture is how big the opening is when your camera takes a pic. Think of it like the pupil in your eye. when it’s bright out your pupil gets tiny- and your camera will need to as well. These numbers are a little counter intuitive. Higher the number, smaller the hole. smaller the number, bigger the hole. The aperture also effects the range of focus. For magical magazine like pic- where the subject is in focus and background is blurred you use a large of a hole as possible (so the smallest aperture number). this is the portrait setting typically. If you’re shooting a whole landscape and you want in all in focus a small hole (large AP number) is ideal (that’s what the landscape setting does)
with a macro setting (forced very open wide aperture) you can focus on a tiny tiny thing (like one corner of a diamond!) interestingly this is also what those instagram filters are copying- when you tap that button that blurs all but the subject. This is also a hot wwedding photog thing to do- in photoshop dropping that blur around everything. (I think it’s cheating but obvi I’m a photography brat 🙂
shutter speed is just what it sounds like- the speed in which the shutter is letting light into the hole. Obvi a faster shutter speed lets less light in than a slow one. typically you can’t do a handheld clear shot with out a tripod slower that 16 or 18. An normal portrait or landscape could be 200-400. Your friend jumping though? Gotta be 800, 1200+ again see how high your camera goes. or maybe you want a pretty motion blur from a sparkler or see stars move even- then you would set up a tripod and drop it to 4 or 5. My cam can stay open for minutes- see what yours can do!
so then you look as your scenario and you adjust those 3 according to your prioriTies. Beautiful sunny beauty shot? big aperture (low number) . action shot? Fast shutter. another way to get a beautifully blurred pic is to have them be still with a long shutter- you have to play around and find your eye.
what makes a good pic? Well in the technical sense: is the subject in focus? Is the exposure balanced? (Over exposed or hot means everything is white and blown out, under exposed too dark) Settings also effect the color saturation and tone. You can adjust all these things “in post” as it’s called but the better pic you take the more information is in the image to work with.
So play around! Go outside and take a pic of a flower or something. See what happens when you adjust ISO, Ap, and SS. Once your brain can get a hold of the principles you can make images as creative as you can dream! Until you decide you need another cam upgrade… It’s can be a whole world and addiction!
def take your class. Hope this helps! I know this is a damn novel but I’m on a long train and it was fun to explain 🙂