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ISO in photography!!!!!!!

November 29, 2011 1:42 am

What is ISO?

ISO is an identification of how senSitive a film or digital camera sensors are sensitive to light. In modern day SLRs the setting varies but they usually start from 100 or 200.

Like any other function you also have an Auto setting where the camera chooses the appropriate ISO for each picture taken.
The ISO setting determines the amount of light that enters the camera. The lower the ISO Number chosen the less sensitive is the sensor to light and the finer the grain.
What I do I mean by grains? I meant digital noise.

High ISO are recommended for Darker situations such as Concerts, Indoor sports, in order to use a FAST SHUTTER SPEED. There’s a trade off. Where you use a high ISO the more digital noise you will have. Have look at the pictures below….

ISO 100 is generally acceptable to take most pictures. The end result would be a crisp noise free shot.

If you are new at this I would recommend to take your camera off the AUTO mode and play with the different ISO levels to see for yourself.
People like myself are control freaks and tend to use different ISO settings for different environment. When choosing your ISO look around you and you subject

– amount of light available: is your subject well lit
– Do I want digital noise for effect or not?
– Tripod r no tripod
– do I have a stationery or moving subject

If there’s plenty of light, you want a little noise and you have your tripod on hand then ISO 100 will be fine.

On the other hand, if it’s darker, Moving subject then you will need to crank up the ISO and have your tripod on hand. A faster shutter speed is a must In these cases.

Where should you increase your ISO?

Indoor sports events
Art galleries and churches

Please let me know if this is comprehensible………..