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Author Topic: ProPhoto RGB Viewer  (Read 13657 times)

fdisilvestro

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Re: ProPhoto RGB Viewer
« Reply #20 on: February 10, 2015, 07:44:49 pm »

What are your thoughts about sRGB Tiff files (not lossy) as compared to sRGB JPG (lossy) files ?

In order to give a better answer you should specify if the Tiff is 16  or 8 bits and the compression level of the JPG

If it is a final product (meaning that you will not perform further edits) and you are going to view it on a monitor, then I would say there are no differences (unless you compress the jpg using a ridiculously low quality value)

If your are going to perform further edits, then the Tiff 16 bits is preferred.

Slobodan Blagojevic

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Re: ProPhoto RGB Viewer
« Reply #21 on: February 10, 2015, 07:47:28 pm »

... What are your thoughts about sRGB Tiff files (not lossy) as compared to sRGB JPG (lossy) files ?

There were some tests done to show that jpegs above 75% quality level are visually indistinguishable from those with higher quality. For web viewing, there will be no difference between tiffs and jpegs at or above 75%. Heck, I even send my files for printing as jpegs, not tiffs (though I do that at 100% quality level).

Tiffs are superior to jpegs when it comes to further post processing, not web viewing or even printing.

Michael Erlewine

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Re: ProPhoto RGB Viewer
« Reply #22 on: February 10, 2015, 07:50:30 pm »

Does anyone know how to set up a PDF for the best color-management?


I haven't checked out the publishing features for a long time.

I admit I am looking here for the (I hate the phrase) Low-Hanging Fruit, because I am in the midst of sorting through almost 500,000 photos, not counting their XMP files. What a Job!... since I was lazy in adding keywords, and do a lot of focus-stacking, which leaves me with TIF files, without EXIF data, etc.


I finally got a new computer that is fast enough to process a hundred 250MB Tiff files (layers) to make a single stacked image in not-too-long, and one thing I have found is that I am glad I hung onto all the layers because re-processing the layers, in the time since I first did them, has produced much better final photos (delivery format: Tiff) that when they first were processed.

I like TIff files for publishing in the work I do.
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Michael Erlewine

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Re: ProPhoto RGB Viewer
« Reply #23 on: February 10, 2015, 07:53:58 pm »

I always use 16-bit Tiff, not 8-bit.

I do a lot of photography work, but I am negligent in publishing. I have yet to print out a single photo for printer, but I also know the lack of quality on the web. I was trying to get a PC app that would help people see photos better. But I did not understand that most monitors will just blow through it and not see the difference. I use a NEC PA 302W, which is pretty decent.
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fdisilvestro

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Re: ProPhoto RGB Viewer
« Reply #24 on: February 10, 2015, 08:03:05 pm »

I have checked a few applications on windows 7 with images in ProPhoto RGB

Applications that handle correctly the images:

- Windows Live Photo Gallery
- Windows Photo viewer

Another option is to use a color managed browser, such as Firefox, and the add-on "slide show viewer"

Out of the few applications I have, the one that was not able to handle the colors properly was MS-Paint

Michael Erlewine

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Re: ProPhoto RGB Viewer
« Reply #25 on: February 10, 2015, 08:07:51 pm »

Thanks much for the application suggestions.

I use Chrome, but I have Firefox also. Would this work:

I make a PDF file with ProPhoto RGB images in it. I send it to someone. They use the Firefox browser AND have a monitor that can handle it.

Will that do it?
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Simon Garrett

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Re: ProPhoto RGB Viewer
« Reply #26 on: February 11, 2015, 10:11:18 am »

Thanks much for the application suggestions.

I use Chrome, but I have Firefox also. Would this work:

I make a PDF file with ProPhoto RGB images in it. I send it to someone. They use the Firefox browser AND have a monitor that can handle it.

Will that do it?

Except that there aren't any monitors that can handle ProPhoto RGB, as was mentioned in an earlier post.  Wide-gamut monitors typically have a gamut approximately the same as Adobe RGB, plus or minus a bit.  But nothing even close to ProPhoto RGB. 

There are many ways of creating PDF files, and I suspect that most of them don't do colour management properly.  In theory, PDFs can contain images in any colour space with embedded profiles, I'll bet most don't.  Either the image won't have an embedded profile, or it will be converted to sRGB.  So first thing to check is that your method of creating a PDF does correctly embed profiles in images, and doesn't convert them to sRGB.

Next, person viewing the PDF needs have a wide-gamut monitor, and they need to have it profiled and calibrated with a hardware colorimiter (ColorMunki, i1, Spyder etc).  And they need to open the PDF file with a colour-managed reader.  I understand the current Adobe Reader is colour managed, but older versions may not be. 
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digitaldog

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Re: ProPhoto RGB Viewer
« Reply #27 on: February 11, 2015, 10:38:57 am »

Except that there aren't any monitors that can handle ProPhoto RGB, as was mentioned in an earlier post. 
I don't think the OP cares. Most of us don't either. No such display will ever exist either that can do this.
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fetish

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Re: ProPhoto RGB Viewer
« Reply #28 on: April 29, 2015, 04:04:07 pm »

I don't think the OP cares. Most of us don't either. No such display will ever exist either that can do this.

We probably need to evolve a bit more too if we really wanna go that direction. maybe add a few more types of cones in our eyes. genetic engineering anyone? lol
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digitaldog

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Re: ProPhoto RGB Viewer
« Reply #29 on: April 29, 2015, 04:05:50 pm »

We probably need to evolve a bit more too if we really wanna go that direction. maybe add a few more types of cones in our eyes. genetic engineering anyone? lol
The super being (baby) in 2001 A Space Odyssey?
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affu933

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Re: ProPhoto RGB Viewer
« Reply #30 on: May 05, 2015, 07:11:05 am »

i think Canon 5DIII will be a great choice for you
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