Archived posting to the Leica Users Group, 2007/02/18

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Subject: [Leica] I Tried an M8; Color Question
From: grduprey at mchsi.com (grduprey@mchsi.com)
Date: Sun Feb 18 12:16:00 2007

Don,
I think the demo at Cooters is probably 1.09 as they received it a week 
before Christmas when I was down there.

So far I have not tried to shoot any high iso stuff yet.  I will have to try 
some later.

Gene


-------------- Original message from "Don Dory" <don.dory@gmail.com>: 
-------------- 


> Bob, 
> If you didn't run any corrections in Light Room then the shift at 2500 is 
> major. Sounds like a retest on a tripod so no other variations. I would 
> also ask if they are on version 1.09 firmware on their demo. I still 
> wouldn't worry about it, the correction in LR would be pretty simple even 
> if 
> there were random color shifts. I can say that my sample is not behaving 
> in 
> that manner. 
> 
> Reading between the lines at dpreview over many tests a lot of cameras 
> shift 
> wb as the ISO goes up especially in tungsten, none as major as this shows. 
> 
> Happy snaps in OK 
> 
> Don 
> don.dory@gmail.com 
> 
> On 2/18/07, Robert D. Baron wrote: 
> > 
> > Don Dory wrote: 
> > 
> > > Don't sweat the wb Bob. Shoot in DNG and all will be very well 
> > > indeed. Minor tweaking in the converter of your choice, not much 
> > > different than color film but faster and easier. Forget the jpg's, 
> > > raw is good. 
> > 
> > Don, I should have been more clear. The shots I posted had to be 
> > converted to .jpg to be uploaded but the original shots were 
> > .dng; I have only shot raw files for the last several years. I merely 
> > opened these .dng image files in the beta of Adobe Lightroom and I 
> > immediately noticed the odd (to me) color shift as the ISO had been 
> > adjusted upward when they were made; I did no sharpening or color 
> > management whatsoever. 
> > 
> > To reiterate my original question: 
> > 
> > > One question I have is about the color it produced on my test; I may 
> > > be having brain fade and not remembering something I should know, but 
> > > please take a look at these 4 test shots from ISO 160 to 2500 (you 
> > > can see the ISO of each when you click through from the thumbnails to 
> > > the full size images) and tell me why there is such a color shift as 
> > > the ISO increases: http://www.bobbaron.com/M8TestFeb07/index.htm 
> > 
> > I'm trying to be an observer, not a complainer. I'm just curious as to 
> > 'why'. 
> > 
> > And while we are talking I've got one more question for those of you 
> > with better color vision than me (probably most all of you; I've got 
> > typical male red-green anomalous vision to some small but apparent 
> > degree): I made it a point to include the rack with black LowePro 
> > gadget bags in the right 1/3 of these shots....I assume they contain 
> > some synthetic material and was wondering if they would display the 
> > infamous magenta color cast. Do they? 
> > 
> > Again, I like the camera overall and I'm sure I'll add one to my bag at 
> > some point. These are just questions I'm asking. 
> > 
> > The LUG is one of the few places I can get answers......all kinds of 
> > answers.... ;-) ;-) 
> > 
> > Thanks and best regards, 
> > 
> > --Bob 
> > 
> > 
> > 
> > 
> > _______________________________________________ 
> > Leica Users Group. 
> > See http://leica-users.org/mailman/listinfo/lug for more information 
> > 
> 
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