Workstation choices - high end PC or Mac Pro

Started 10 months ago | Discussions thread
Jim Cockfield
Forum ProPosts: 14,967
edits are in 8 bit or 16 bit mode...
In reply to raminolta, 10 months ago

raminolta wrote:

2- Photoshop and Lightroom do support more than 8bit editing mode as well as some other editing program such as Corel Pro, etc.. In order to be able to edit in 10-bit, you do not need a 10-bit display. However, you cannot actually see the result in 10bit of higher color if your display pipeline is not 10bit. For being able to display these images in 10bit, you need the following:

You're not editing at 10 bits per channel. With image editors like Photoshop, you're editing at either 8 bits per channel or 16 bits per channel, regardless of the bit depth of the original file. For example, with an application like Photoshop, you can look at the Mode setting under the Image menu and change between 8 bit and 16 bit.

It's best to perform all edits in 16 bit mode, even if you plan on saving the image as an 8 bit jpeg (as you'll see fewer problems from pasteurization and banding by doing all edits in 16 bit mode)

Then, when you save an image, you're either going to save it as a 16 bit image if you want to retain more color depth (for example, a 16 bit TIFF). Or, you'll save it as an 8 bit image (such as a jpeg).

But, even though the actual editing is normally done at 16 bits per channel with apps like Photoshop (although Elements only edits in 8 bit mode, which is a drawback compared to higher end editors), you just can't see all of the color depth on a display, as it gets translated to a lower bit depth for output to your display (even though the actual image is still being edited at a higher bit depth).

In most cases, the image you're working on is going to be displayed at 8 bits per channel, unless you have software that supports 10 bits per channel (like a newer version of Photoshop), a Pro grade graphics card (Nvidia Quadro or AMD Firepro) and a true 10 bit per channel monitor connected via a Displayport.

But, the values being worked on and stored internal to your editor are either going to be at 8 bits per channel or 16 bits per channel.  You just can't output anything higher than 10 bits per channel to a display with most current software and display cards (so if you're working at 16 bits per channel, those values get translated to the closest values for the display color depth supported for output to your monitor.

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