Camera guys....school me on ISO's
 

There's so many different ISO's that you can change with your camera. What does it mean and what would be better in certain scenarios.

I'm still learning how to use my SD1000.........I've wondered the same thing. :hs:

A film speed is converted from the linear scale to the logarithmic scale by this formula (plus rounding to the nearest integer)


http://upload.wikimedia.org/math/2/9...1ed2198ea1.png

http://upload.wikimedia.org/math/0/2...2df4823820.png

Got it Jae? :chuckles:

In english please :oh:

Depending on the camera and the complexity of the sensor you generally want to only use 400 and under ISO settings. Many cameras start to create noise at anything above that and many render nearly unusable images at 1600 or 3200 ISO.

What it is basically speaking is the speed of the film. This means the sensor is more sensitive to light at 400 than it is at 100 which means you can shoot in lower light settings with a faster shutter.

The rule of thumb though is to shoot with the lowest ISO setting you can get away with and still get a good usable image.

You are making it far more difficult than it actually is ;)

I guess I should stop using that Auto feature then.

Yeah you should...I mean seriously it's a digital camera so what is the worst that happens? You get home and find 50 images that didn't turn out like you wanted and you delete them after trying to work with them?

Not a big deal, drive space is cheap. I remember learning these mistakes on film and it cost me time and money to develop the film. Now I can experiment to my hearts delight all day and not spend a penny.

200 or 400 and you will have no worries thats all you need to know.

/thread

Yea i do the same. I'm going to go home and take pictures of the same image with different ISOs and see what it comes out to. Thanks Vinnie and Nightshade.

When i was younger i was under the impression that 400 was for night shots and 200 was for day shots.