Re: 16-bit Printing
Re: 16-bit Printing
- Subject: Re: 16-bit Printing
- From: "Roy Harrington" <email@hidden>
- Date: Fri, 21 Nov 2008 09:10:19 -0800
I was specifically addressing the bit depth of data that gets
transferred to the
print driver not editing workflow bit depth. The file data was smooth
16-bit data
and the test was to chop it down to various "transferred bit depths".
My feeling from the start was that 8-bit was enough, but not seeing a
difference
between 16 and 8 bit in a specific case is a bit unsatisfying to me as a proof.
So showing evidence where bit depth did make a difference seemed like a
worthy approach. I was frankly surprised that I could get an identical looking
print even under magnification using just 64 levels being sent to the driver.
So, no, at the time I had no 16-bit path to be able to check it. But
if you can't
see the difference between 64 and 256 levels what are the odds you'll see a
difference between 256 and 32,000 levels?
Everything I did is shown and available -- data and method -- with my
write up at
http://harrington.com/bitinfo.html
Rather than take my results for granted I'd encourage others to try the same
thing out with other printers, other drivers, other inks. It's very
simple, just
Photoshop commands and Printing. I think it's one of those things that has no
definitive proof so you may (or may not) get a better comfort value if you see
for yourself.
Roy
On Fri, Nov 21, 2008 at 6:59 AM, Scott Martin <email@hidden> wrote:
>
> I did some tests that showed that 8-bits was enough. In fact I was
> unable to tell any difference with as few as 6-bits. If you are interested
> I wrote a brief
> description of the tests I did: http://harrington.com/bitinfo.html
>
> Did your tests including sending 8bit vs high bit data directly to a printer
> that can accept hit bit data? That's the topic of discussion here, not bit
> depth workflow prior to sending data to the printer.
> Scott Martin
> www.on-sight.com
>
>
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