Google| Subject | Re: Lenses and sharpening |
| From | Martin Brown |
| Date | 09/15/2014 12:32 (09/15/2014 11:32) |
| Message-ID | <rfzRv.307244$KL.89034@fx19.am4> |
| Client | |
| Newsgroups | rec.photo.digital |
| Follows | Alfred Molon |
On 14/09/2014 08:30, Alfred Molon wrote:
Alfred MolonUnsharp mask historically was implemented by physical means to allow very high contrast images to be more satisfactorily be represented on printed media. It got adopted by David Mailn of the AAT to bring out faint low contrast details in nebulae that would otherwise be invisible.
In article <2014091316132932858-savageduck1@REMOVESPAMmecom>, Savageduck says...SavageduckAlfred Molon
...and what PP software, & what sharpening methods do you use? I am not going to advocate one application, or method over the other, I know what advice I can give with what I am familiar with in my workflow.
Isn't unsharp mask the same across all PP applications? I would have thought it's an algorithm which is implemented in various PP applications, or are there differences?
http://en.wikipedia.org/wiki/David_Malin
And from there it entered mainstream digital image processing.
It was in use for advertising purposes for quite a while prior to that.
The details of most algorithms are roughly similar but how they handle underflow and overflow of pixel values may vary with implementation.
-- Regards, Martin Brown
09/13/2014-
