Aperture
Aperture can change the focal distance of the image, for example if you were to use an Aperture of f32, there would be a large depth of field. OR, if you were to use an Aperture of f2.8 then the background would be very blurry causing the subject in focus to stand out much more, many people would do this do capture animals or even shoes, just to make them stand out more and make them the main subject, and most time, the only subject.
(IMAGE NOT MINE)
As you can see, the background is very blurry which only makes you focus on the shoes, this may have been taken with an Aperture of f1.4, but not many lenses have this, a lot of cheap lenses just allow f2.8 - f3.5 or even f4.
Also, f1.4 is where the lens opens up the most, therefore more light is let in than any other f stop, this is where you have to then keep changing settings as you go along, if the hole is open at it's biggest then you don't need as much light, this is why you'd turn your ISO down to 100, ISO is the light sensitivity, after reading about in then it'll make more sense to you and to what I'm talking about.
A small aperture would be f22 or f32, these are smaller holes. I know how complicated it sounds, the smaller the aperture, the smaller the hole, the bigger the number.
The larger the aperture, the larger the hole, the smaller the number.
It's very confusing but this is why you have to read over it a few times and then go out to practise it.
Anyway, with an aperture of f32 (which is a small hole) then less light would be obviously be coming in, this is where you'd need to slower the shutter speed which keeps the hole open for longer, OR, you can raise the ISO (remember that ISO is light sensitivity and that the higher the number, the more sensitive it is to light). And with a smaller aperture (f32) you would get a more large depth of field, it would focus on more. (The background would not be blurry)
As you can see, the background is very blurry which only makes you focus on the shoes, this may have been taken with an Aperture of f1.4, but not many lenses have this, a lot of cheap lenses just allow f2.8 - f3.5 or even f4.
Also, f1.4 is where the lens opens up the most, therefore more light is let in than any other f stop, this is where you have to then keep changing settings as you go along, if the hole is open at it's biggest then you don't need as much light, this is why you'd turn your ISO down to 100, ISO is the light sensitivity, after reading about in then it'll make more sense to you and to what I'm talking about.
A small aperture would be f22 or f32, these are smaller holes. I know how complicated it sounds, the smaller the aperture, the smaller the hole, the bigger the number.
The larger the aperture, the larger the hole, the smaller the number.
It's very confusing but this is why you have to read over it a few times and then go out to practise it.
Anyway, with an aperture of f32 (which is a small hole) then less light would be obviously be coming in, this is where you'd need to slower the shutter speed which keeps the hole open for longer, OR, you can raise the ISO (remember that ISO is light sensitivity and that the higher the number, the more sensitive it is to light). And with a smaller aperture (f32) you would get a more large depth of field, it would focus on more. (The background would not be blurry)
(NOT MY IMAGE)
^^This image^^ has a small aperture (f32). Which means the lion and buildings can both be sharp and in focus.
(NOT MY IMAGE)
And again, this image has a very blurry background meaning it has a large aperture (f1.4).
Shutter Speed
Moving onto Shutter Speeds, they can be easier to learn as there isn't much to them, the smaller the number, the quicker the shutter works, for example, if you have a shutter speed of 1 second, then the shutter will be open for 1 second until it closes again, so it will let light in for 1 second, and if you set the shutter speed to 1/125 then the shutter will be open for... well.... 1/125 of a second...
Shutter Speed is measured in seconds, therefore, 1/1000 is faster than 1/60. 1/60 is faster than 1".
1/500 is faster than 1/125 and so on.
And what I've learned from my photography teacher is that 1/125 is the cut off point for handheld, if you are using 1/60 and slower, then you'd need to use a tripod to avoid the shake and blur in the image. The tripod will stabilize the image.
If you want to freeze an image you'll need to use a fast shutter speed, for example when I take photos of people skating I will use a fast shutter speed to freeze the action.
(I WILL ALSO USE FLASH AS THIS HELPS MAKE THE SKATER MORE SHARP AND FOCUSED)
This image below is taken with a shutter speed of 1/200 and I have used flash also.
Shutter Speed
Moving onto Shutter Speeds, they can be easier to learn as there isn't much to them, the smaller the number, the quicker the shutter works, for example, if you have a shutter speed of 1 second, then the shutter will be open for 1 second until it closes again, so it will let light in for 1 second, and if you set the shutter speed to 1/125 then the shutter will be open for... well.... 1/125 of a second...
Shutter Speed is measured in seconds, therefore, 1/1000 is faster than 1/60. 1/60 is faster than 1".
1/500 is faster than 1/125 and so on.
And what I've learned from my photography teacher is that 1/125 is the cut off point for handheld, if you are using 1/60 and slower, then you'd need to use a tripod to avoid the shake and blur in the image. The tripod will stabilize the image.
If you want to freeze an image you'll need to use a fast shutter speed, for example when I take photos of people skating I will use a fast shutter speed to freeze the action.
(I WILL ALSO USE FLASH AS THIS HELPS MAKE THE SKATER MORE SHARP AND FOCUSED)
This image below is taken with a shutter speed of 1/200 and I have used flash also.
This image is an example of a slow shutter speed, this was exposed for 1 second, meaning the shutter was open for one second. Using a slow shutter speed on water can make it look very smooth, people that use slow shutter speeds to capture cars or stars etc. can sometimes use an "ND filter". This means "neutral-density filter" and it can reduce or modify the light, colours and intensity etc.
This will make the lens see less light and you can make the shutter speed slower and get a smaller aperture etc.
This will make the lens see less light and you can make the shutter speed slower and get a smaller aperture etc.
ISO
ISO is the specific light sensitivity. The lower the number, the more "clean" the image will be, the higher the number, the more "noisey" the image will be.
For example if the ISO is 100 then the image will be clear.
if the ISO is on 3200 - 6400 or even higher then the image will look more "grainy".
ISO is the specific light sensitivity. The lower the number, the more "clean" the image will be, the higher the number, the more "noisey" the image will be.
For example if the ISO is 100 then the image will be clear.
if the ISO is on 3200 - 6400 or even higher then the image will look more "grainy".
This is the best example I can possibly show, it covers most of the subject too as you can see the examples with your own eyes.
If you want to read over this quickly and just read from a poster then check this out, it's the best thing regarding Aperture, Shutter Speed and ISO. You can scan over this very quick to understand what's what.
Thanks for reading my post, next post I'm thinking of speaking about my life a little more, about what I do in college etc.
But also remember, going out and taking pictures helps out a lot more than just studying so make sure you get out and take some pictures!
Check out my Twitter!
https://twitter.com/StreetShots_ds
Check out my Instagram!
https://www.instagram.com/dalesouthall/
But also remember, going out and taking pictures helps out a lot more than just studying so make sure you get out and take some pictures!
Check out my Twitter!
https://twitter.com/StreetShots_ds
Check out my Instagram!
https://www.instagram.com/dalesouthall/
Check out my friends blog page! He blogs about movies and posts movie reviews.
No comments:
Post a Comment