Why So Grainy?

Lisa Maxwell · April 23rd, 2011, 11:08 AM

Ya know, I think highlight was accidentally turned on...not sure, but I think when I was going through the setting I noticed it being on. I turned it off because I know I don't want it on, but it may have been on for this shoot. And 160 ISO, okay...got it. I was wondering if that rule applied for that low range.

Nigel Barker · April 23rd, 2011, 12:52 PM

You don't need to obsess too much about ISO. The received wisdom is that the 'odd' ISOs 160, 320, 640 are less noisy than the 'even' ones 100, 200, 400 but honestly you would be hard pressed to see any difference in noise between 100 & 640 & all the ISOs in between. The important thing is that the image is correctly exposed & that you don't have blown highlights or featureless shadows.

April 23rd, 2011, 11:08 AM	#31
Lisa Maxwell Regular Crew Join Date: Feb 2011 Location: Wisconsin Posts: 135	Re: Why So Grainy? Ya know, I think highlight was accidentally turned on...not sure, but I think when I was going through the setting I noticed it being on. I turned it off because I know I don't want it on, but it may have been on for this shoot. And 160 ISO, okay...got it. I was wondering if that rule applied for that low range.

April 23rd, 2011, 12:52 PM	#32
Nigel Barker Inner Circle Join Date: Feb 2009 Location: Norwich, Norfolk, UK Posts: 3,531	Re: Why So Grainy? You don't need to obsess too much about ISO. The received wisdom is that the 'odd' ISOs 160, 320, 640 are less noisy than the 'even' ones 100, 200, 400 but honestly you would be hard pressed to see any difference in noise between 100 & 640 & all the ISOs in between. The important thing is that the image is correctly exposed & that you don't have blown highlights or featureless shadows.