Re: film grain and digital

2001-09-19 Thread Aaron Reynolds

Collin Brendemuehl wrote:
 
 Aaron,
 
 You must write this technique into an article for
 publication  submit it.  It's one of the most
 novel  fascinating technology transition adaptions I've heard yet.

Hey, thanks for the encouragement.  I wonder who to submit it to?

-AA+ ron
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Re: film grain and digital

2001-09-18 Thread Collin Brendemuehl

Aaron,

You must write this technique into an article for
publication  submit it.  It's one of the most 
novel  fascinating technology transition adaptions I've heard yet.

From this point on, your name is AA+ ron.  :)
Live long and prosper in results.

Collin

From: Aaron Reynolds [EMAIL PROTECTED] 

Then I remembered talking to one of our reps who one time sandwiched 
blank, processed film in the carrier with the neg he was printing 
because his client wanted more grain.  Sounded like another technique 
from reality I could port over to Photoshop! 

So, I scanned the leader of a roll of pushed Delta 3200 and overlaid it, 
then fooled with the opacity and options in the layer palette until I 
was happy.  Screen was the winner. 

The bonus, too, was that despite different crops and magnifications of 
the images, they all had the same sized grain, so they didn't look 
differently cropped.  Woohoo! 

- -Aaron 
a cheater extrordinaire 
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Re: film grain and digital, was Re: THE NEW PENTAX

2001-09-18 Thread Doug Franklin

On Tue, 18 Sep 2001 14:39:05 -0400, Aaron Reynolds wrote:

 Even so, I made a record-sized version of the cover (I'm old-school
 enough that I size my CD jackets so that I can print an excellent 12x12
 should the need arise), on which I could detect no moire pattern, even
 though I was certainly laying pattern over pattern -- Delta 3200
 magnified over Delta 3200.

Moire patterns will only be recognizable if all of the layers have
_regular_ repetitious patterns that are different. For example, mix a
200 dpi scan with a 300 dpi scan, and you'll get an easily recognizable
moire pattern.  Film, however, has a stochastic (random, sort of)
pattern that is not at all regular (except statistically) so it
shouldn't exhibit moire patterns large enough for the human eye to
detect except under extreme magnification.  There will be edge
effects at the points that pixel edges intersect grain edges, but
these edge effects are (1) extremely small in area and (2) different
from each other, so they don't appear to the eye as an extended
pattern.

Or so I've been told. :-)

TTYL, DougF
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