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slr - iso 1212 Responses
Last post: 2 months, 1 week ago | Thread started: Jun 25, 08, 12:43 p.m.
- 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
- flashbender
^ what he said higher iso = grainer but faster and needs less light


- Dog-earJun 25, 08, 12:45 p.m. – Permalink
- flashbender
this pretty much sums it up:

- 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.


- Dog-earJun 25, 08, 1:07 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.

- 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.


- 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.


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



