Tagged Questions
19
votes
8answers
857 views
Should higher ISOs really be preferred (all other things being equal)?
My understanding of the ISO setting on digital cameras is that, unlike film-cameras, changing the ISO does not evoke any physical change in the camera. Rather, it simply tells the camera to multiply ...
3
votes
7answers
277 views
Can ISO vary on different cameras?
We all know that [ISO] + [shutter speed] + [aperture] = a great picture.
Now, let's take two different (very!) cameras: Nikon D3100 vs Nikon D800 and set them on Aperture priority.
Settings for the ...
7
votes
3answers
249 views
Variable ISO Sensor: Possible and/or Useful?
This answer to the question about how ISO is implemented in digital cameras seems to imply that each photosite (i.e., pixel) can have its ISO set independently. If this is true, then I would think ...
20
votes
3answers
1k views
Why can't the ISO level on most digital cameras be set below 80?
Why is it that the ISO level on most digital cameras doesn't seem to go lower than ISO 80?
I understand (vaguely) that the sensors adjust the gain in order to achieve the equivalent of a high ISO ...
36
votes
6answers
2k views
How is ISO implemented in digital cameras?
If I change the ISO settings on my camera, obviously the gain of the system is increased, amplifying the signal from the sensor. What's not clear to me is where the amplification takes place. I see ...
16
votes
4answers
493 views
What is ISO and how does it affect my photos
What is the ISO setting on my camera? What does it represent? What should I be aware of with regards to ISO when taking photographs
