ISO 102400

[paigew]

given the recent thread about ISO I wanted to share this taken today at iso 102400 (highest I have gone so far). I know many people don't like grain, but I really love it. Perfectly acceptable IMO, maybe not for client work, but in general.


day 69|365: Noah plays in the tunnel by paige_w, on Flickr

 

[pixmedic3 3]

was any noise reduction done to this photo?

 

[paigew]

no noise reduction...nothing except my matte post processing

 

[lambertpix]

Show off. ;-)

 

[pgriz]

My understanding is that your dynamic range is reduced with higher ISO's presumably because the boosted signal has less difference between no-signal and full signal. Haven't tested this, so maybe it's full of hooey, but perhaps it's worth checking into.

 

[paigew]

My understanding is that your dynamic range is reduced with higher ISO's presumably because the boosted signal has less difference between no-signal and full signal. Haven't tested this, so maybe it's full of hooey, but perhaps it's worth checking into.

Interesting. I have not heard that before.

 

[tecboy]

What camera did you use? My dslr is not that good in iso 102400.

 

[paigew]

I used 5d mark iii. High iso images take a lot of practice. There has to be some sort of quality light falling on your subject for it to work. Expose for highlights and the noise is minimal. I usually prefer b/w for high iso shots but I really loved the colors of the tie dye. And, honestly, I was impressed with the color at that high iso!!


The t3i (which I used to own) doesn't go up that high, but I did max that out often as well.

 

[KmH]

Grain in film based images, which is caused by the light sensitive silver halide grains in the emulsion, looks different from digital image noise.

Higher ISO (ASA) 'fast' film meant bigger silver halide grains, which were more visible in the image.

Kodak defined a 'Print Grain Index" using a RMS measurement of density fluctuations in uniformly exposed film. (RMS = Root Mean Square, a measure of the spread of a quantity)
Granularity was measured with a microdensitometer that had a 48 micrometre aperture.

For portraits I kept a refrigerator stocked with Kodak Ektar ISO 25 Professional (PHR) that was graded micro-fine for gain size.