DOF and Cropping take 2

Started 6 months ago | Discussions thread
awaldram
Forum ProPosts: 10,705Gear list
Like?
Re: ISO, noise, exposure, and total light
In reply to bobn2, 6 months ago

bobn2 wrote:

awaldram wrote:

This gain increases the noise for any given exposure solution.

It really doesn't.

Acording to ISO 12232:2006 it does

Please explain where. So far as I know, ISO 12232:2006 says nothing about 'gain'. Nor does it say that 'gain' will increase 'noise'.

So you have a copy.?

http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=37777

ISO 12232:2006 specifies the method for assigning and reporting ISO speed ratings, ISO speed latitude ratings, standard output sensitivity values, and recommended exposure index values, for digital still cameras. ISO 12232:2006 is applicable to both monochrome and colour digital still cameras.

Though it doesn't explicitly  state gain increases the noise for any given exposure solution it does suggest methods for assigning and reporting ISO speed ratings, which implies Gain which intern implies noise.

Sorry I make assumptions base on my knowledge that causes me to jump to conclusions omitting steps along the way.

 awaldram's gear list:awaldram's gear list
Pentax Q Pentax K-3 Pentax smc DA* 55mm F1.4 SDM Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM Pentax smc DA* 50-135mm F2.8 ED (IF) SDM +11 more
Reply   Reply with quote   Complain
Post (hide subjects)Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow