Our monitor can only display 8 bit information (24 bit RGB). TIFFs are
mostly non compressed (and not compress very well), JPEG is compressed
image, some informations are lost during the compression. In many cases the
quality loss is very little unless you use very high compression rate. I use
level 11 in PS, I cannot distinguish its quality from TIFF.
C.H.Ling
----- Original Message -----
From: "Jim Nichols" <jhnichols@xxxxxxxxxxxxx>
> Hi Chuck and C.H.,
>
> The images that I post are placed in the Leica Users Group (LUG) gallery,
> which will accept either tiff or jpeg images. The tiff image files are
> much
> larger than the jpegs, hence I concluded that they contained more details,
> etc. In looking at the images that I have posted recently, the tiff
> images
> "appear to me" to be of better quality. Perhaps this is just a perception
> that I have. For that reason, I have sometimes resisted changing them to
> 8-bit for final touch up.
>
> Am I mistaken? Do our monitors and prints show only what would exist in
> an
> 8-bit image? I'm not enough of a techie to know how to evaluate this.
>
> I also save all of my RAW files, so I can, and sometimes do start over
> when
> I don't like my work in post-processing.
>
> Jim Nichols
> Tullahoma, TN USA
touch pixel brightness levels
>>>> except for final sharpening at print resolution.
>>>>
>>>> If neither your display nor prints can show the 16-bit color/luminosity
>>>> detail why keep it?
>>>>
>>>> Chuck Norcutt
>>>>
>>>>
>>>> On 3/25/2011 6:04 PM, Jim Nichols wrote:
>>>>> Thanks, Chuck. I have had a busy day, but saw that after I put it up.
>>>>> I'm
>>>>> torn, at times, between the need to edit, which, in my case means
>>>>> going
>>>>> to
>>>>> an 8-bit image, or the desire to retain more detail in a 16-bit tiff
>>>>> image.
>>>>> Lately, when I can, I have been going with the tiff.
>>>>>
>>>>> Jim Nichols
>>>>> Tullahoma, TN USA
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