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Camera question -- ISO vs Shutter speed?

  • Thread starter Thread starter Deleted member 4644
  • Start date Start date
D

Deleted member 4644

I just want to confirm something..

On a digital camera such as a Nikon D50... ISO, shutter speed, and aperture size are NOT the same correct?

At one pt I thought ISO was basically shutter speed times aperture... but I now understand you can have ISO 200 and 1/100th sec speed and a f/4 aperture. And alternatively, you can have ISO 400 1/100th sec speed, and f/4 aperture.

Correct? So ISO is just one more tool for getting the best shot that is independent of the other controls..?
 
ISO is the "films" sensitivity to light. Or in the case of a digital camera, the CCD's - think of it as digital gain.

Shutter speed is just that, how long the shutter is open.

Aperture size is just that, how big the aperture is. The bigger the f/number, the smaller the aperture.

ISO is independant of both shutter speed and aperture. Depending on the camera/lens, you will have certain shutter/aperture limitations.
 
Originally posted by: Eli
ISO is the "films" sensitivity to light. Or in the case of a digital camera, the CCD's - think of it as digital gain.

Shutter speed is just that, how long the shutter is open.

Aperture size is just that, how big the aperture is. The bigger the f/number, the smaller the aperture.

ISO is independant of both shutter speed and aperture. Depending on the camera/lens, you will have certain shutter/aperture limitations.
Click to expand...
Excellent answer. You get a star. :thumbsup:

 
ISO is sensitivity to light. Higher = more sensitive.

However, the higher the ISO, the more noise is going to be in the shot. You want to always shoot in the lowest ISO possible for your situation.

Shutter speed (Tv) is how long the shutter remains open exposing the film/sensor to light.

Aperture is the opening on the lens which lets more/less light in. Higher aperture = smaller opening = less light in. Lower is reverse.

Aperture also affects the depth of field. At a very small f/number the aperture is wide open and less of the shot will be in focus.

Basically you want to use all three of those options to get your shot, correct.
 
Originally posted by: OdiN
meh...I'm typing slow this morning
Click to expand...

You gave a more detailed answer anyway. I had just woken up when I posted that. I meant to go back and edit for more detail, but got caught up in getting ready for work. 😛
 
Originally posted by: PHiuR
Use High ISO if you want 'colorful' pictures 😉
Click to expand...

What if it's in B&W? 😛


Actually...using a high ISO in B&W can give you a grain effect if you are looking for something like that.
 
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