See You probably don't know what ISO means – and that's a problem: Digital Photography Review
I must admit I had the wrong idea about ISO.
I didn't think noise was "hum"The apparent familiarity and simplicity of ISO setting leads to a number of common misunderstandings. Despite what you may have heard or read, changing the ISO of your camera does not change its sensitivity.
ISO changes the lightness of the final image but it doesn’t change the fundamental sensitivity of your sensor.
It’s widely thought that the additional noise in high ISO image comes from the ‘background hum’ of the sensor’s amplifiers. This feels right: we’ve all heard more hum if we turn up the volume on an audio amplifier. Unfortunately it’s simply not true: most noise actually comes from the light you’re capturing, so it primarily depends on your shutter speed and apertureI'll need to re-read the article again (a few times) I generally shoot RAW.the digital ISO standard is based around ‘correctly’ exposing JPEG midtones.......................That’s not the best way to expose digital. The best results are achieved by giving as much exposure as possible without clipping the brightest tones you care about............
Ron B.
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I'll have to have a read, thanks Ron.
Having just gone digital I've just equated noise to film ASA/ISO grain/sensitivity
Thanks Ron..... interesting read.
Mark
Of all the things I've lost, I miss my mind the most
2015 TDV6 D4.... the latest project... Llams, Traxide, Icom 455, Tuffant Kimberleys and Mofos.... so far.
2012 SDV6 SE D4 with some stuff... gone...
2003 D2a TD5...gone...
2000 D2 V8...gone...
https://bymark.photography
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