Gene51 Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)

Martin Bailey did a great graphical explanation for different color spaces and why editing should be done in prophoto and only reduced to a smaller color space on export.

http://www.martinbaileyphotography.com/2014/05/27/why-use-the-prophoto-rgb-color-space-podcast-423/

skywolf

Wow, never gave the color space much thought and just always shot on sRGB. Did some quick tests and can't see much of a difference through my Nikon 3100. Thanks for the info!

JaiGieEse Loc: Foxworth, MS

Mr. Bailey makes a,lot of sense - but - in a recent Datacolor webinar, the speaker stated that as few monitors and printers can accurately display and print Prophoto, you're simply wasting drive space by creating larger files.

Rongnongno Loc: FL

You may want to consult this topic I created over ACR use of the camera recorded EXIF...

Gene51 Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)

You should only see a difference when you exceed the gamut of your selected color space, which can happen when you let the camera process the jpg, or when you do try to process a jpg in post processing. If the image looks ok out the camera, it should be fine for non-critical purposes.

Gene51 Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)

Files are not necessarily bigger because you use a wider color gamut. And it is quite common for printers to represent greens and blues and yellows that cannot be displayed in sRGB or even Adobe RGB, though you can edit them in Photoshop and can show different values even if the display cannot show them. Which is the reason that for critical color work you want to use a display that has the greatest gamut, and a bit depth that is better than 8 bit, which pretty much rules out all Apple products, since the 8 bit limitation is "baked in" the operating system. PCs can go up to 10 bit with an NVidia Quadro or ATI FirePro display adapter and that feature turned on in Photoshop. The key is that you want to minimize the difference in gamut between the display and the printer.

Mark7829 Loc: Calfornia

Can you provide a link to the quote?e I would surmise that the lab is unable to print to a wider gamut due to limitations on their equipment? BayPhoto does not have such a requirement. Yes, it is good to check and then send your images who those who can produce the best and widest gamut.

Gene51 Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)

This is a great article on color managed workflow. It specifically addresses the ACR color space - which is none.

http://www.adobe.com/digitalimag/pdfs/phscs2ip_colormgraw.pdf

What ACR does is use camera profiles, that shows how the colors are captured, and lets you assign a rendering color space, which you can choose from - sRGB, AdobeRGB and ColorMatchRGB. Your selected rendering colorspace is then embedded into the file on export. When you open the image in Photoshop or whatever, if you have selected a different working colorspace, you will be asked if you want to use the embedded one or the working color space. But ACR does not use a colorspace, per se. I am not sure whether raw thumbnails are still viewed in AdobeRGB or if they are now viewable in ProPhoto.

Gene51 Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)

It's on their website.

http://www.mpixpro.com/help/Help.aspx?id=21#anchor_110

However, I think if you contact Miller's, their parent company which does custom, wide gamut fine art printing, you will see they will print wider gamut with greater color depth.

Lundberg02

Shoot RAW, convert to Pro Photo 16 bit, print from Photoshop manages colors with the proper paper settings, and you get all there is to get. End of story.

JaiGieEse Loc: Foxworth, MS

As I said, it's the Mpix Pro website.

http://www.mpixpro.com/help/Help.aspx?id=21#anchor_110

I would not describe this is a true Pro lab, as they refuse to print custom sizes, and then there many other ways they limit their offerings. They specify that they do NOT offer any sort of color correction. Whatever you send them, they print. Unless it's not sRGB. Then they convert to sRGB and print with no further adjustments. this lab, and others I've contacted, seems to be highly automated and they will not deviate from their system. I did contact Miller, the Mpix parent, and they will still not print custom sizes.

If anyone knows of a good lab that prints images the way the customer wants them printed, please identify same.

Mark7829 Loc: Calfornia

I found it. But I think they are limited as a big lab. Perhaps they invested in sRGB printers. The bigger labs accommodate the larger gamut. Did you try BayPhoto?

CraigFair Loc: Santa Maria, CA.

I'll like to know what camera creates a 16 bit raw capture thought.[/quote]

What is the RAW Capture???

JaiGieEse Loc: Foxworth, MS

What is the RAW Capture???[/quote]

Any image captured by a camera set to RAW or RAW+jpeg.

D7000 offers a choice of 12 bit or 14 bit capture. LR allows one to export images at a 16 bit image depth.

Bit, (as per image export) refers to "bits per channel." The most common export level - 8 bit - contains a total of 24 bits of data, eight for each channel. A 16 bit RGB image contains 48 bits total, or 16 per channel. Presumably, a 14 bit capture in camera would contain more data, or information than would the other choice - 12 bit.


Ss per the camera's recording of image data, David Busch's D7000 box relates it this way:

"■ 12 bit. This is an optional bit depth for the Nikon D7000. Images are recorded at 12-bits per channel in the RAW file, and end up with 12 bits of information per channel that is translated during conversion for your image editor either into 12 bits within a 16-bits-per-channel space or interpreted down to 8 bits per channel.

■ 14 bit. At this default setting, the D7000 grabs 16,384 colors per channel instead of 4,096, ending up as 14 bits in a 16-channel space or reduced to 256 colors by the RAW conversion software that translates the image for your image editor. You’ll find that such 14-bit files end up almost one-third larger than 12-bit files, and that your camera’s continuous shooting rate may be reduced (which alone is a good argument for not using the 14-bit setting any time you may need to shoot bursts of images). 14-bit images are unmatched for HDR photography, however."

CraigFair Loc: Santa Maria, CA.

Thank you for answering my first question.
Would my Nikon D600 FF be able to take advantage of the 14 bit Capture or is 12 bit tops for it too. D810???
Craig