Re: 8bit to 16 bit - Derek
2007-04-11 by dealy663
... Hi Clayton, Sorry, but for some reason it didn t go through to my account at hotmail. My main real email address is dme AT grandprixsw DOT com. Whatever
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8bit to 16 bit - Derek
2007-04-11 by Clayton Jones
Derek, ... I got it and sent a reply at 4:28 pm (EDT). Let me know if you can t find it and I ll resend. Regards, Clayton Info on black and white digital
Re: Suggestions for Negative Scanner
2007-04-11 by julieseltzergirl
wow, thanks everyone for the comments, as well as the private emails. I think I am going to try the software solution first, and then carefully look at
[Digital BW] Re: 8bit to 16 bit
2007-04-11 by dealy663
Paul, You can see how some of these things works just by opening an image and looking at the histogram. Bring up the brightness/contrast slider and watch when
RE: [Digital BW] Re: 8bit to 16 bit
2007-04-11 by Gary W. Weaver
Ya? Rick, But which is better? : ) In any case, the monitor doesn t display all the data. Only the programmers so-called best representation - which I need
RE: [Digital BW] Re: 8bit to 16 bit
2007-04-11 by Gary W. Weaver
... From: DigitalBlackandWhiteThePrint@yahoogroups.com [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com]On Behalf Of Manuel Toledo Quinones Sent: Tuesday,
RE: [Digital BW] Re: 8bit to 16 bit
2007-04-11 by Paul Roark
Derek, I believe this discussion started with the question of whether there is anything to be gained from converting 8 bit to 16 bit. So, my comments are in
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by Bruce Watson
... We ve learned a bit since 1931. We ve developed better instruments and can take better measurements. And we ve learned more about what we should be
Re: Suggestions for Negative Scanner
2007-04-10 by jnhugo
... DigitalBlackandWhiteThePrint@yahoogroups.com, julieseltzergirl ... have ... Well that is a really good picture of the cat regardless of grain image. I
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by CorrPro96@aol.com
In a message dated 4/10/2007 2:30:19 PM Eastern Daylight Time, dealy663@hotmail.com writes: Please keep in mind that I ve massively simplified how these
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by Alan Ansell
Not wanting to over-egg the pudding, but for anyone interested, you might enjoy the following link: http://www.fho-emden.de/~hoffmann/ciexyz29082000.pdf --
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by CDTobie@aol.com
... Well... somewhere between that and eight bits. But shooting raw and working with high bit certainly offers more than enough gray levels; the question is
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by Alan Ansell
Hi Bruce, As I understand it, the basis for colour management - the CIE color space - was produced after extensive studies of the human visual system. Without
Red River Dourian being discontinued
2007-04-10 by Andrew Unger
Red River Paper is discontinuing Dourian Art. This information was on their Paper Blog. They are selling off the last of their stock at regular prices (at
Re: 8bit to 16 bit
2007-04-10 by Rick Colson
8 bits is two bucks. 16 bits is four bucks. End of discussion. :-) Rick
[Digital BW] Re: 8bit to 16 bit
2007-04-10 by dealy663
... Actually, the above is incorrect. A color file that is in 8-bit rgb mode converted to BW only has 256 tones (levels) even if still in rgb mode. This is
RE: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by Eric Neilsen Photo
I can without a doubt, stand behind converting from 8 to 16 for EXTENSIVE editing on smooth areas. I have seen this over all my years of working with PS. (not
Re: Suggestions for Negative Scanner
2007-04-10 by Steven Karafyllakis
... 2k. ... Try Vuescan, at http://www.hamrick.com If you fins a solution for the grain and want to continue using the scanner, Vuescan will almost certainly
Re: OT: Zeiss 50mm Sonnar lens stolen on eBay
2007-04-10 by David Keenan
... That s for rockin sockin sure... Dave. -- Web Site: www.david-keenan.com 2007 PAW: www.david-keenan.com/paw 2006 EuroBlog: www.david-keenan.com/euroblog
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by Steve and Ann Taylor
Part of the problem here is in thinking linearly. In fact, the way the 256 steps of an 8-bit image are distributed are logarithmic and a great deal hinges on
RE: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by Pierre Archambault
Hello, I ve been following this debate with interest and would like to point out the following: Canon just came out with a 1D Mark III which is 14 bits thus
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by amadou diallo
Clayton, I ran the gist of the early part of this thread by some Adobe engineers and beta testers. Aside from the standard no benefit response (of which I
[Digital BW] Re: 8bit to 16 bit
2007-04-10 by Manuel Toledo Quinones
So, if my understanding is correct, 8-bit rgb = 256 levels x 3 channels = 768 levels (if converted to b&w) or the equivalent of 9.5 greyscale bits. Converting
[Digital BW] Re: 8bit to 16 bit
2007-04-10 by Clayton Jones
Derek, ... Isn t that what we re seeing in a badly combed histogram? Regards, Clayton Info on black and white digital printing at
[Digital BW] Re: 8bit to 16 bit
2007-04-10 by Clayton Jones
Hello Derek, ... Thanks very much, it makes good sense. ... As I mentioned before, I did see in a large smooth area containing subtle transitions some negative
[Digital BW] Re: 8bit to 16 bit
2007-04-10 by dealy663
I doubt there will ever be a need for a 32 bit camera. As things stand right now I don t believe that there is much in the way of an appreciable difference
RE: [Digital BW] Suggestions for Negative Scanner
2007-04-10 by Eric Neilsen Photo
Then Alan, I think you should take a second look at noise reduction software. It makes a hugh difference in many cases, and a very small difference in a few.
RE: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by Paul Roark
Derek, ... If you d used curves for this adjustment, would there have been any loss? Paul www.PaulRoark.com
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by Bruce Watson
... What makes you think that? We use eight bits per channel (RGB) because it fits the (current) computer architecture (and makes a smaller memory footprint
RE: [Digital BW] Suggestions for Negative Scanner
2007-04-10 by Gary W. Weaver
Hi All, I agree with this approach for the most part. A scanner should show you which side of the film the dust is on - it should be that sharp(ugly). From
RE: [Digital BW] Suggestions for Negative Scanner
2007-04-10 by Alan Ansell
FWIW: I m not a photographer and therefore don t have a great understanding of what would constitute a good scan of a 35mm negative but going by the evidence
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by CDTobie@aol.com
... done in each color channel are the best possible 256, not a hacked up, interpolated 256. C. David Tobie Product Technology Manager ColorVision Business
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by CDTobie@aol.com
... Before its justified to go that far, it would be necessary to fill the 65,000 steps of a 16 bit file with meaningful data... C. David Tobie Product
RE: [Digital BW] Suggestions for Negative Scanner
2007-04-10 by Eric Neilsen
Noise reduction indeed! I was quite unhappy with the quality of scans coming off a Imacon Precision II and it has only been in the last year or so that with
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by Alan Ansell
Ah - excellent. Thanks. So, referring to the very valid point that - taking 8-bit colour here to mean 8-bit per channel and hence we are actually talking
RE: [Digital BW] Suggestions for Negative Scanner
2007-04-10 by j brubaker
Julie - I too have recently been scanning alot of older film images. I m using a Minolta Multi-pro which has a good reputation as a pro-level scanner, but I
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by Mark Savoia
Will any future digital camera ever shoot in 32 bit? Mark
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by CDTobie@aol.com
... 8 bits per channel, means 256 levels per color channel. Anything more is treated as 16 bits per channel by Photoshop. So 10 to 12 bit camera files rattle
[Digital BW] Re: 8bit to 16 bit
2007-04-10 by dealy663
A little bit of computer science here. An 8 bit BW file can have at most 256 levels of gray tones, a 16 bit file can have 65536 independent tones. Converting
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by Ernst Dinkla
... David: A nice analogy, the architect isn t lost here Met vriendelijke groeten, Ernst
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by amadou diallo
A neat app for looking at linear raw files (on the Mac) is RAW Developer . It has a Disable all
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by Alan Ansell
A fascinating debate this and I might be overlooking something fundamental here, but in an attempt to ensure I am following this correctly: Is this discussion
Re: Suggestions for Negative Scanner
2007-04-10 by Andre Moreau
Hello Julie, Conventional wisdom would call for another dedicated 35mm scanner. Having used a Nikon Coolscan V I can say that I ve also encountered the same
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by CDTobie@aol.com
... How does one redistribute 256 values into the same 256 slots without dumping some, and interpolating others? Thats where high bit can be useful, though
Re: [Digital BW] Re: 8bit to 16 bit
2007-04-10 by CDTobie@aol.com
... Many years ago, when creation of a bitmap editing application was pondered by some of the experts of the day, the concensus was that a program to
Re: IT Supplies mess up ... you have to laugh (or cry)
2007-04-10 by colossal-man
You shouldn t be responsible for the extra charges and IT should fix their mistake. I would have to do the same thing if I made that kind of error with one of
Re: OT: Zeiss 50mm Sonnar lens stolen on eBay
2007-04-10 by Rick Colson
Jane wrote: Never, EVER, ship something until the money is (a) in your paypal account, or (b) in your checking account officially - if you get a money order
Suggestions for Negative Scanner
2007-04-10 by julieseltzergirl
Hello all, For about 10 years I have used a Minolta QuickScan 35 plus, and have used it to scan in lots of 35mm negatives. I am finding that I am not entirely
Re: Wilhelm on "archival"
2007-04-10 by Michael E. Gordon
... You might mean Livick. It s very interesting what is currently there in place of data. http://www.livick.com/method/inkjet/pg1.htm Michael Gordon
IT Supplies mess up ... you have to laugh (or cry)
2007-04-10 by Richard Smallfield
Hi, I ordered three 33 13 rolls of PremierArt Premium Dual Sided Matte from IT Supplies. They quoted Global Express Mail™ (EMS) (3-5 days) US$40.60 for