slr - iso 1212 Responses

Last post: 4 months, 4 weeks ago | Thread started: Jun 25, 08, 12:43 p.m.

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• epete22

  So i bought a dslr camera and I am having trouble figuring out the settings. can anyone simply break down "ISO"?

  what is ISO 200 good for?

  what would you use ISO 1400 for?

  Is the only difference that the picture has a finer image at 200 and a grainer image at 1400?

  Jun 25, 08, 12:43 p.m. – Permalink

• 2cents

  lower the number the less noise, but also the need for more light.

  • What he's about to say v– Spookytim1/2

    oh you clever clever man– flashbender2/2

  

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  Dog-earJun 25, 08, 12:44 p.m. – Permalink

• flashbender

  ^ what he said higher iso = grainer but faster and needs less light

  • < What he said.– 2cents1/2

    ^< what he said– flashbender2/2

  

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  Dog-earJun 25, 08, 12:45 p.m. – Permalink

• capsize

  http://en.wikipedia.org/wiki/Fil…

  • ISO 200 = daylight– capsize

  

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  Dog-earJun 25, 08, 12:46 p.m. – Permalink

• epete22

  so its just basically a balance between low light and heavy light? are there any standards? like 200-800 are always indoors or is it basically just trial and error

  • it has to do more with the subject. IE. Is DOP or stopping motion the priority?– danthon1/3

    yeah use photographic terms when he's obv a nube to photography! doh!– 23kon2/3

    I am sure he can ask if he is not sure. Not very much real estate in these to explain details on things he will learn about one way or another.– danthon3/3

  

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  Dog-earJun 25, 08, 12:49 p.m. – Permalink

• key

  As you may remember from photography class hrrrmph, ISO is the light sensitivity of the "film". Same thing here lower numbers are finer grained but require more light/longer exposures higher numbers are faster but rougher.

  • nevermind read the wiki– key1/2

    o ok, film speed. wiki was more useful than the instruction book– epete222/2

  

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  Dog-earJun 25, 08, 12:50 p.m. – Permalink

• flashbender

  this pretty much sums it up:
  

  

  • ahh now I get it.– Jnr_Madison

  

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  Dog-earJun 25, 08, 12:50 p.m. – Permalink

• dibec

  iso100 - less light sensitive (sensor).
  iso3200 - more light sensitive (sensor).

  it is pretty much a gain for available light to the sensor. There are physical limitations to aperture and shutter speed, iso gives some more flexibility. Due to the gain factor when you increase your iso the camera tends to pick up noise, hence loosing image quality.

  

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  Dog-earJun 25, 08, 1:07 p.m. – Permalink

• 23kon

  The most important rule of photography is to keep your lenses clean.

  

  • please dont!– 23kon1/3

    true fact– dskz2/3

    i got those already, great buy,– epete223/3

  

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  Dog-earJun 25, 08, 1:12 p.m. – Permalink

• dibec

  lol.

  

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  Dog-earJun 25, 08, 1:13 p.m. – Permalink

• omgitsacamera

  Some cameras/sensors are better at higher ISO's than most.

  For example, an 8MP camera phone at ISO 1600 yields watercolour grainy images more than say a 6MP dSLR at the same ISO.

  It's that, the shutter speed, and the aperture that influence the image the most.

  • hmm this is more complicated than i thought– epete22

  

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  Dog-earJun 25, 08, 1:32 p.m. – Permalink

• jaylarson

  ^ the sensor size matters most. squish 1000 pixels in one square millimeter will yield more noise than having 1000 pixels in a square centimeter.

  higher iso cranks up the sensor's sensitivity allowing a more exposed image. since you can't make something out of nothing, and if the sensor uses too much gain, the noise and artifacts appear since it is trying to make something out of nothing.

  

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  Dog-earJun 25, 08, 2:15 p.m. – Permalink

• omgitsacamera

  heres a good bite sized version:

  

  i saw a more detailed one with the effects of the factors, but i havent found it yet. maybe ill make my own.

  

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  Dog-earJun 25, 08, 2:17 p.m. – Permalink