Photography Chat

« first day (1515 days earlier) ← previous day next day → last day (3445 days later) »

9:06 AM

I see products are recommended to be shot at ISO 100. Does that mean that ISO 100 is camera's natural ISO level with no compromise for artifacts? Does increasing ISO cause more artifacts? Grains and disruptions are these artifacts, right?

8 hours later…

AJ Henderson

5:33 PM

@Boris_yo often 100iso is the native, either way, it is generally the slowest ISO (least gain) so it should at least be close to tied for least noise

read noise (the kind that ISO impacts) is noise that occurs from charges building up in the sensor from heat and such

when you increase ISO, it increases the gain which boosts both low levels of signal as well as low levels of noise

thus making the signal to noise ratio less ideal

if you have a range from 1 to 1000 and some of your pixels randomly have 1 or 2 signal from noise, it is a minor portion of the signal

but if you up your gain to multiply everything by 10, you now have some pixels with 10 noise and some signals that were previously at 99 that are now 990. You get a wider range of signal values in the dark portion, but the noise is a bigger portion of that data

and the noise is literally just pixels starting with random values

it does look kind of grain like though

Stack Exchange

6:26 PM

Q: Edits on meta are hard to read

I was looking through an edit on a meta post made by another user today, and found it very hard to read. There is limited contrast between the text and the background, and so the only viable option is to select the text. This seems to only effect the side-by-side markdown view, and then, only p...