Thanks for the clarification, C.H. When I save jpegs, I normally use level
12 in PS Elements unless the destination places a limit on file size.
So, it appears that I can convert to 8-bit and do a final cleanup of my
images without losing any quality in the displayed image. That helps me in
my decision making.
Jim Nichols
Tullahoma, TN USA
----- Original Message -----
From: "C.H.Ling" <ch_photo@xxxxxxxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Saturday, March 26, 2011 11:51 AM
Subject: Re: [OM] IMG: Friday Tulip - Jim N.
> 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
>
> --
> _________________________________________________________________
> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
> Themed Olympus Photo Exhibition: http://www.tope.nl/
>
>
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|