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 Post subject: iso setting
PostPosted: Mon Feb 27, 2012 6:20 am 
i just bought a new cannon 600d.....i see in the iso settings, its auto, and then goings from 200 on up...why would one use a higher iso setting????

 Post subject:
PostPosted: Mon Feb 27, 2012 4:29 pm 
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Joined: Sun Apr 18, 2010 12:33 pm
Posts: 443
Location: St. John's, NL, Canada
Higher iso means faster shutter speed. But higher iso also means more noise or grain in your photo. The trick is to find the balance between the two.

Trevor Harris

Nikon D200
YN-560 II
YN RF 603 x 4
Tamron 17-50mm f/2.8
Nikon Series E 50mm f/1.8
Nikon AF-S 70-300mm f/4.5-5.6 VR

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PostPosted: Tue Feb 28, 2012 12:13 am 

Joined: Sat Sep 12, 2009 2:03 am
Posts: 1496
Location: Gold Coast Australia
Don't forget, before you will see any difference in noise you will have to have a very high ISO with today's cameras. In daylight shooting I don't think you will have any problems. Do a search here for high ISO and see some photo examples.


Nikon D7000, Nikkor 80 - 400G, Nikkor 18- 200 VR II, f3.5-5.6.

 Post subject:
PostPosted: Wed Feb 29, 2012 12:46 am 

Joined: Tue Sep 13, 2011 10:52 am
Posts: 94
You use a higher iso in situations where you need the camera sensor to be more sensitive to light, because there isn't enough light to take the shots you want. For example, when shooting sports in-doors you need a fast shutter speed to capture the action without motion blur. However a fast shutter speed means less light getting to the sensor, even with the aperture wide open, and may mean your shots are too dark due to being under exposed. In this case you would increase the iso.

Dan Marchant
I am learning photo graphee - see the results at

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