p38arover
7th August 2018, 08:58 AM
See You probably don't know what ISO means – and that's a problem: Digital Photography Review (https://www.dpreview.com/articles/8924544559/you-probably-don-t-know-what-iso-means-and-that-s-a-problem'ref_=pe_1674010_132618830)
I must admit I had the wrong idea about ISO.
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.
I didn't think noise was "hum" :)
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 aperture
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............
I'll need to re-read the article again (a few times) I generally shoot RAW.
I must admit I had the wrong idea about ISO.
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.
I didn't think noise was "hum" :)
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 aperture
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............
I'll need to re-read the article again (a few times) I generally shoot RAW.