#1 What is ISO in photography

ISO in photography For beginning photographers, one of the most difficult parts of studying photography is figuring out those exposure settings.

You know. Aperture, Shutter speed,  and ISO.

We have completed a manual for aperture and depth of field and clarified shutter rate too.

If you haven’t already brushed up on those concepts, simply pay a visit to those posts mentioned above.

Meanwhile, it’s time to venture into the area of ISO and learn exactly what it does and how it can affect the look and texture of your own images.

ISO also helps in exposing photos like shutter speed and aperture . but often many people do not understand ISO properly . in this  article ,I will try to tell you iso in very easy language .

If you do not know is APERTURE or SHUTTER SPEED before learning ISO

If you consider them tree pillar of photography . iso is the third pillar of the exposure triangle by changing this you can change the exposure of the photo , that is you can make photo bright or dark by increasing or lowering the iso

Lets know , what is the important of iso in photography

ISO In Photography
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It is a camera setting, but playing it can give your photos a different look. There’s always a trade-off involving a higher ISO value and the sound level of the photoshoot.

Raising your own ISO will add grain to your own photographs, also known as noise in the former sentence, so the resulting photo may not be as sharp and crisp as you’d like, thus, making it unusable.

You should only raise your ISO when you cannot brighten the photograph via shutter speed or aperture rather (for example, if using a longer shutter speed would cause your subject to be fuzzy ). While doing painting with colors we need a small amount of water or oil to move the brush smoothly   likewise, we need a small amount of ISO is photography. which is standard is have minimum 100 iso in each camera. now a days some costly cameras have minimum 50 iso but normally all cameras have minimum 100 iso . then way need for more iso? when the supply off light is less , we can get the same brightness using more iso .and the cameras having more iso is more costly .

Now see, we have some more lights with us. so we are using iso 100. when we switch of half of those lights , to create the same amount of light is sensor. we have to use iso 200 , we get the iso 200 by using iso 200 ,we get the same amount of brightness which we got with iso 100 with half lights , again we switch of half more lights and increase the iso to 400. likewise we continued up to iso 12800 and the brightness of the photo remained same but where is the problem ? as we got clarity of the picture from iso 100 .we failed to get the same clarity with iso 12800 grains and noise appeared there so we should always try to use minimum iso . if we lack light for any reason and we cannot control our exposure with shutter speed or we cannot control our exposure with aperture. then we may use iso up to ¼ of maximum limit provided in our camera to manage the work up to same extent. but the result of more iso will not be satisfactory as with iso 100

Aperture is controlling brightness and darkness in our camera .

Shutter speed is controlling brightness and darkness is our camera .

Iso is also controlling brightness and darkness is our camera .

All these tree options are doing same thing . then why not a single option ?

I have told you earlier , that aperture have another work DEPTH OF FIELD

When you want to focus the subject and blur the background , you will open the aperture . as a result more light will enter into the camera .

who will compensate that , Shutter speed you will open the shutter speed for a short time , and the light will be reduced likewise ; to click a subject with fast motion , you have to reduce the shutter speed for a short time to freeze it . as a result less light will  enter into the camera .then how to compensate that ISO may be used or you may use aperture .

A good comprehension of ISO can help you make wise decisions about how to place your camera. And that, consequently, will result in better images.

#1 What is ISO in photography
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How is it measured?

ISO is measured in numbers. While producers utilized to stick to ISO 100, 200, 400, 800, 1600, and so on (doubling in value), things have changed with newer cameras. Smaller increments have been introduced for superior refinement, but the concept is identical. ISO 100 is half as sensitive as 200, that can be half as sensitive as 400.

Way we use iso ?

We use iso because the two basic exposure parameters, shutter speed and aperture ; do not offer sufficient leeway to create the correct exposure for all situations.

Both shutter speed and aperture can be used to change exposure but they also have significant side effects shutter speed control the motion blur the aperture controls the depth of field and sharpness .

With just these two you cannot independently combine any shutter speed with any aperture value . the image will be under or over exposure and rarely corrected .

What is Auto ISO?

Auto ISO was introduced to electronic cameras several years back to help photographers manage noise equilibrium. Turning on that feature permits the camera to push the ISO upward when it determines the camera speed is becoming too low for a fantastic picture. Better still, newer Nikon cameras also have additional “ISO Sensitivity Auto Control” to the menu choices. This takes Vehicle ISO and permits you to have some say about what occurs. With it, you set the limit for how high it can go (800? 3200?) And in what shutter speed it should start raising the ISO (1/125? 1/30?)  The amount of control this attribute allows means more photographers will begin using it.

Auto ISO and Flash

#1 What is ISO in photography
source : https://petapixel.com/ with flash picture

Auto ISO can also be used if you’re shooting with a flash, whether it’s the built-in pop-up in your own camera or an attachment Speedlight. When you are using a flash, then the camera speed parameter is ignored–and the flash sync speed is utilized instead.

However, if your D-SLR/Speedlight mix offers Slow Sync Flash, the camera will then utilize the minimum shutter speed that was put from the Auto ISO menu, then preventing the camera from choosing too slow of a shutter speed. It does this to make sure that the correct exposure is selected.

How to set ISO on your camera

The precise method of changing your ISO changes slightly from camera to camera, however, the overall instructions will be the same.

If you are using an entry DSLR or mirrorless camera, then you are able to access your ISO through a menu. There, you’ll be able to select the value you want. You will also have the option to select “Auto ISO”.

More on that below.

If you are using a prosumer or higher-end camera, you more than likely can get your ISO using an ISO button on the top or rear of the camera or by spinning one of the wheels to swiftly change it.

Check your camera’s manual for the exact directions on the simplest way to change your ISO setting as, as you’ve just discovered, this is a setting you will need to change frequently.

What ISO should I use and when?

Deciding on the right ISO for your situation can be confusing to someone who’s just starting. While we always state you need to use your base ISO whenever possible, we also know that’s rarely possible.

From overcast days outside to actions shots that require a high shutter speed, sweeping landscapes in dusk, and family photos inside — light conditions vary as much as the subjects we photograph and for that reason, you’ll probably need to modify your ISO frequently.

Here are some basic rules of thumb when choosing your ISO based on lighting requirements:

Daylight: ISO 100 — 200

Shade/Indoors: ISO 200 — 400

Flash Indoors: ISO 400 — 800

Darker Indoors: ISO 800 — 1600

Indoors at Night: ISO 1600 — 3200

Extra Low Light: ISO 3200+

It may not seem like it today, but choosing your ISO setting will eventually become second nature to you as a photographer.

However, as a newcomer, when you’re choosing what ISO to start with, ask yourself the following questions about the scene you’re getting ready to take:

Practice makes perfect

Understanding the significance of ISO will go a long way toward obtaining your camera out of Auto and taking complete control of your own art. To completely master vulnerability, the best thing you can do experiment with some hands-on practice. Have a photograph, then alter your ISO and see how that change influenced your own photograph. Can it turn out how you anticipated? 

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