DPChallenge: A Digital Photography Contest You are not logged in. (log in or register
 

DPChallenge Forums >> Tips, Tricks, and Q&A >> problem with color quality after writing to jpeg
Pages:  
Showing posts 1 - 7 of 7, (reverse)
AuthorThread
10/17/2012 05:30:30 AM · #1
Hi,

I recently started shooting and editing in RAW. I have Adobe Photoshop 5.1.

I edit in photoshop using "camera raw" editor and then write out to tif file format.
Load tif file and edit in photoshop. ( learned this in a online class by a photoshop expert)

My problem is, I write to JPEG after all this with maximum quality.
Now If I load this jpeg in picasa I see lower quality pics. Mostly in terms of color.

Is picasa messing with it or photoshop not writing well or there is something which I don't know.

Thanks in advance for the help.

Regards,
Prashant
10/17/2012 05:54:17 AM · #2
I suspect it's the colour space

Are you processing to AdobeRGB in photoshop? When you save it and then view on the web the colours won't be right if it's saved in AdobeRGB

Use the save for web option in photoshop and convert to sRGB as you save. You will get an acurate preview before you save

Also, and I stand to be corrected, there is no point saving as tiff from camera RAW to then open in photoshop, just open it directly from camera raw, and then if required save as a layered tiff with no jpeg compression. Though you only need to do that if you do lots of editing in photoshop and want to re-edit later, if all edits are in camera RAW then those edits will be saved to an xmp file so no need to save at all to tiff as when you re-open the raw file all your changes will be applied
10/17/2012 06:21:11 AM · #3
Thanks for the input Robert.

Does it mean that we should always edit in sRGB to avoid such issues ?

I will try loading raw directly instead of writing out tif. Now I vaguely remember that the person infact used it for layered editing.
( it was a live tutorial so can't go back and watch )
10/17/2012 06:33:17 AM · #4
It's only worth using sRGB for the web, AdobeRGB has a wider colour space (ie more colours) so is better for printing. I would always edit and save the tiff as AdobeRGB and convert to sRGB for web use

Yes, you can save all the layers in a tiff so it is non-destructive to the original jpeg. If you do all of your editing in camera RAW though the tiff file is redundant and just takes up space as all your changes made by camera raw are saved into the xmp file. There is no loss in quality opening the raw file directly into photoshop vs saving it as a tiff first, you can then save as a tiff if you want to preserve all your editing layers (making sure there is no jpeg compression) ... if you have a lot of layers you can choose zip compression as this will not effect the quality of the image but it won't actually compress it much
10/17/2012 10:02:10 AM · #5
Originally posted by bobonacus:

It's only worth using sRGB for the web...


I'm going to offer a conflicting opinion. It is very true that Adobe RGB is a wider gamut color space. But, unless you really understand the (very) complicated topic of color management, the benefits of editing in it are overcome many times by the pitfalls, of which there are more than a few.
My recommendation, which I follow, by the way, is:
- Do as much of your global changes as possible during RAW conversion, using the full data depth and non-destructive nature of RAW conversion tools.
- Do do all your remaining editing in sRGB, unless you *know* exactly why you are choosing another color space, and are fully aware of all the pitfalls and how to avoid them.
- Editing in sRGB in 16-bit mode is a good option to preserve fine gradations of color. I mostly find this unnecessary, however, because I'm not making dramatic changes in tonality after RAW conversion.
10/18/2012 02:35:02 AM · #6
Thanks Fritz

I guess I would try both for a few days to check which suits me :)
10/18/2012 03:46:51 PM · #7
Hi Prashant,

Adobe RGB is sortof a mixed bag (goods and bads). IF you really want to work in it, send me a pm and i'll walk you through it as best as i can. Know however, that it is not very practical to use Adobe RGB in terms of sheer speed and reproducablilty when a majority of your work is done online.

You can use firefox with a calibrated widegamut monitor to properly display images for yourself if you want to stick to ADOBERGB, but not everyone will see it quite as well. The majority of computers out there probably have monitors that display somewhere between 70-100% srgb and won't really take avantage of that wider gamut. Most print labs are srgb friendly, people will see what you see, and there's one less step in conversion for web. You will lose some colors, but i've seen rich colors in srgb space as well and ultimately chose to stick with it. The only time i use adobe rgb is if a client requests it (happened twice so far), or if i feel i can possibly get more out of my prints in very specific situations..

Good luck

Message edited by author 2012-10-18 15:47:36.
Pages:  
Current Server Time: 03/28/2024 08:06:33 PM

Please log in or register to post to the forums.


Home - Challenges - Community - League - Photos - Cameras - Lenses - Learn - Prints! - Help - Terms of Use - Privacy - Top ^
DPChallenge, and website content and design, Copyright © 2001-2024 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 03/28/2024 08:06:33 PM EDT.