Yahoo Groups archive

Digital BW, The Print

Index last updated: 2026-04-28 22:56 UTC

Message

Re: [Digital BW] Re: New linearization test image uploaded

2006-12-13 by Howard Shaw

gp295 wrote:
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Howard Shaw 
> <glassman@...> wrote:
>>
>> 
> Re : Message # 82082
> 
> Howard.
> 
> I don't know if this will help, but I've just asked the list-owner to 
> upload two more circular gradients to the Files > Image Processing 
> folder on this site : (\ufffd)_precise_light and (\ufffd)_precise_ dark. All 
> being well, they should appear there within the next couple of days.
> 
> I produced these images a few days ago after an off-list discussion 
> with Jeff Randall in which it became clear to me that my original 
> test file wouldn't be accurate enough for people who are able to work 
> more precisely than I am (using QTR and a 51 gray patches, for 
> example). The idea was that these bigger images would make it 
> possible for people playing hunt-the-reversal (or similar DB&W 
> pastimes) to accurately locate where a problem occurs, and enable 
> them to tweak the exact value that needs adjustment. The images 
> themselves include an explanation of how they operate.
> 
> Jeff was kind enough to offer to try out the images for me, but 
> because of some printing problems he's having, won't be able to do so 
> for a while. I'm slightly uncomfortable about uploading the images 
> without them being tested on the kind of system they were intended 
> for because I can't be certain that they will actually do the 
> business. But it seemed to me that you might be struggling to do what 
> you want with the less-accurate (original) test file, so in the end I 
> decided I might as well upload them. I'll ask the list-owner to 
> remove them later if they prove not to be helpful. 
> 
> Best.
> 
> graham

Okay, thanks Graham.

Howard

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.