Tuesday, November 13, 2007

What is ISO in photgraphy (last part)

As what I discussed from my last post in using or setting your camera in higher ISO (800,1600,3200) it may result a blurry or a grain in the images. Here are some consideration in order for us to set our ISO in a lower or higher setting.

This Image Used ISO 200

This Image Used ISO 800

Try to evaluate the images above from the first image as what I said I used ISO 200 the colors are very fine. While the second images from where I used ISO 800 the colors have a grain or noise.

When you will used higher ISO if the picture will not look fine? Read the following practical consideration on when and what ISO to be used in some different situation.


Practical Considerations

  • You obtain the best image quality by using the lowest ISO (50, 100, 200) possible on your digital camera. If you want to ensure your digital camera always uses the lowest ISO setting, switch the ISO setting from the default "Auto ISO" (this setting is usually found in the Menu) to the lowest possible on the camera, say ISO 50.
  • If you mostly take pictures where there is enough light for a correct exposure, i.e. sunny outdoors, then using the lowest ISO on your digital camera will give you the best image quality your digital camera is capable of.
  • If you want to take pictures indoors where light may not be sufficient and in other low-light situations, then you would need to supplement existing light with flash or studio lights. Either that, or select a higher ISO. Of course, depending on your digital camera, a higher ISO may mean a noisy image.
  • A large image sensor (APS-sized and larger) means that you are able to use a high ISO speed without unduly worrying about noise. This means that you can take pictures in low-light situations without your pictures being under-exposed. It also means that in situations where it is required, you are able to use a fast enough shutter speed to prevent camera shake. All, again depending on your camera, without much noise.
Keep in mind that it’s only when you shoot in a manual or semi-manual mode that you need to change ISO. When you’re in auto mode or one of your camera’s preset modes it will select the lowest one that it can for you.

2 comments:

moryarti said...

thanks for the tips bro .. very helpful.

Josh of Arabia said...

what else could i say, sir: "you're d man". txs for reminding me to review my camera.

hapi NY!

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