Ysarex
Been spending a lot of time on here!
- Joined
- Nov 27, 2011
- Messages
- 7,120
- Reaction score
- 3,629
- Location
- St. Louis
- Can others edit my Photos
- Photos OK to edit
Nothing mysterious here, in the old days you controlled the shutter speed and aperture and loaded your camera with the film speed (ISO) you thought you would need. Maybe you could push it or pull it in the darkroom a bit.
With digital you still control the shutter speed, aperture and now you can also change the film speed between shots.
You still have the same issues however. the faster you push the ISO the "grainer", it called noise these days, the picture.
Well Grandpa, some help here then as I seem to have a mystery on my hands. According to you faster (higher) ISO values are going to make my photo "grainier" -- noisy. But that doesn't seem to be happening. I just took these two photos:
One at ISO 125 and the other at ISO 1600 and the higher ISO photo doesn't look any noisier than the lower ISO photo. In fact if anything the higher ISO photo is maybe a smidge less noisy. What's the deal?
Here's both photos at full res so you can pixel peep them:
ISO 125
ISO 1600
They were both processed with luminous noise filtering turned off so as not to interfere. Why isn't the ISO 1600 photo noisier than the ISO 125 photo?
Joe
As always, good photography requires knowledge of all the effects of the camera's variables. With digital you have many more right at your fingertips.