Re: Contrast
Re: Contrast
- Subject: Re: Contrast
- From: Andrew Rodney <email@hidden>
- Date: Wed, 11 May 2005 12:48:28 -0600
On 5/11/05 12:39 PM, "Mark Rice" wrote:
> I believe the monitor should attempt to achieve maximum contrast. A
> transparency has a range of approximately 1000:1 Paper reflective output is
> capable of 80:1 or with special papers, perhaps 120:1
The transparency might be 1000:1 but unless you're going to output to that
medium, the output contrast ratio is going to be much lower. But the bigger
issue is matching the ratio to the medium. I might be going out to a fine
art ink jet print so 500:1 is preferable yet when going out to a four-color
press, I might need 350:1. Nether setting is ideal for the other. The best
possible soft proof will result in matching the contrast ratio to the medium
and as yet, the only device that can do this (that I know of) is the Sony
Artisan as you have specific control over both black and white luminance.
Plus you can build as many such color space target values as you like and
update on the fly to each with a single mouse click.
> The profile should be used to create the lowered contrast of the proofing
> media.
The ICC profile doesn't know or account for contrast ratio. That's why we
need to alter the behavior of the display physically. That's the reason LCDs
kind of suck (there's hardly anything you can do to adjust em other than
play with the backlight intensity).
Photoshop's simulate soft proofing is somewhat helpful but still a kludge.
You can't do justice to a simulation by dimming the white luminance of the
display (using Absolute colorimetric to the display) and not affect the user
interface elements as well. And you just lower the overall luminance in an
attempt to dim the paper white. It's a step in the right direction but still
problematic. At least with the Artisan, you can produce a very exacting and
fixed contrast ratio for a closer soft proof (although you still have a
paper white simulation issue in Photoshop).
> You may want the black value of the proof area on the monitor to be
> representative of the black reflectance of the proof media, but the
> non-image black should be full monitor black - otherwise, the whole thing
> just appears "hazy".
That's why it's so much better to adjust the black and white of the display
physically which can be done (with one) display rather than try and screw
with black and white as Adobe does with the simulate options. I'd be happier
with the simulate functionality if I could affect the menu's and tool
palettes but now I can't so it's only really useful in full screen mode.
That makes editing kind of difficult.
Andrew Rodney
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| | >RE: Contrast (From: "Mark Rice" <email@hidden>) |