RE: [Digital BW]
2003-05-28 by ellery
Have you used these papers on regular epson ? The banding could be as simple as the paper thickness setting. Or it could be a case of ink clogging when the
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Re: [Digital BW] Digital, film, scanning comparisons
2003-05-28 by Jon Dubovsky
... Except in the most trivial of cases, given the output of any number of binning functions, it is a mathematical impossibility to convert those into the
Re: [Digital BW] Digital, film, scanning comparisons
2003-05-28 by Roy Harrington
... Austin ... of ... three ... reconstruct the ... spectral ... B&W films ... know what ... color. ... response ... I suppose this is totally beaten to
RE: [Digital BW] Digital, film, scanning comparisons
2003-05-28 by Austin Franklin
... Jon, I don t understand the relevance of that. You do NOT have only the red element (unless it s only red, that is), you have three values. Also, I do
Re: [Digital BW] Digital, film, scanning comparisons
2003-05-28 by Jon Dubovsky
... Nay, it is almost exactly the opposite. The more constrained the input function A(F), the easier it is to guess it given the bin output functions. The
Re: [Digital BW] Digital, film, scanning comparisons
2003-05-28 by Truman Prevatt
I think it s probably simpler than that. Given a pure color -light of a single wavelength, say from a laser. Can the values of the R, B, G sensors be used to
Re: [Digital BW] Digital, film, scanning comparisons
2003-05-28 by Jon Dubovsky
... I think I need to weigh in again. Perhaps no one read my previous post. *I* understand Anthony, at least on this point: It is a basic mathematical fact
RE: [Digital BW] Digital, film, scanning comparisons
2003-05-28 by Austin Franklin
Ah! ... Ah! (again). I think I see the confusion. You can construct an ellipse from three points (actually an arc), if the three points are X,Y coordinates.
Re: [Digital BW] Digital, film, scanning comparisons
2003-05-28 by Peter Nelson
... spectral ... the real ... information just ... disagree. I ... understanding, but ... information I ... believe I ... converse is, of ... I agree with
Re: [Digital BW] Digital, film, scanning comparisons
2003-05-28 by Peter Nelson
... spectral ... the real ... points. ... response of any ... information just ... But the lack of that precision may not have any practical effect. The reason
RE: [Digital BW] Digital, film, scanning comparisons
2003-05-28 by Austin Franklin
Hi Anthony, ... I understand that is what you are saying, and again, I simply disagree. I don t know what it is that is missing in yours and or my
Re: [Digital BW] Re: Scanning
2003-05-28 by Truman Prevatt
I would suspect that the difference between CCD detectors used in signal processing is based on the fact a lens performs a Fourier transform and the CCD is
Re: [Digital BW] Digital, film, scanning comparisons
2003-05-28 by Anthony Atkielski
... So how would you reconstruct a continuous, irregular curve of spectral energy distribution from just three data points? It s possible if the curve is a
RE: [Digital BW] Digital, film, scanning comparisons
2003-05-28 by Austin Franklin
Hi Anthony, ... I do understand EXACTLY what you are saying, AND I simply disagree with it. Austin
Refilling Carts
2003-05-28 by Bill
Great forum. Very knowlegable individuals with professional, respectful input, feedback. Once i went to a 1280 with MediaStreet inks and CIS I had an Epson
Re: [Digital BW] Digital, film, scanning comparisons
2003-05-28 by Anthony Atkielski
... Yes, I do. Can you compose an entire post without insulting me in some way? ... No, it does not. For example, it is sufficient to say that x = a+b,
Re: [Digital BW] Digital, film, scanning comparisons
2003-05-27 by Peter Nelson
... You really don t know what empirical means, do you? ... Evidence is not what someone hypothesizes - evidence has to exist empirically. You haven t
RE: [Digital BW] Digital, film, scanning comparisons
2003-05-27 by Austin Franklin
Hi Anthony, ... I m the other part of we ... ... Noticeably different density is not relevant as far as I am concerned, as that can be corrected as long as it
Re: [Digital BW] Digital, film, scanning comparisons
2003-05-27 by Anthony Atkielski
... That s what the paragraph you backquoted was: AA Measure the spectral distribution of a scene (with a AA spectrometer, for example). Then take a picture
Re: [Digital BW] OT: Sharpening for different sizes...
2003-05-27 by derek_c@cix.co.uk
If you aren t changing the resolution, just the size and dpi in the file header then you don t have to do a thing. In article ,
RE: [Digital BW] best course of action to print black&white on Epsons 2200
2003-05-27 by Daniel Staver
... I don t think any of these, except Imageprint, are available for the 2200 just yet. (?) -- Daniel Staver http://daniel.staver.no
RE: [Digital BW] Digital, film, scanning comparisons
2003-05-27 by Austin Franklin
Hi Peter, ... And...keep in mind that grossly different colors produce the exact same grayscale response! Austin
Re: [Digital BW] Digital, film, scanning comparisons
2003-05-27 by Peter Nelson
... for ... film). ... using only ... image. You ... much ... That s what you SAY, but you haven t provided a specific example. We ve repeatedly asked you to
RE: [Digital BW] Re: Scanning
2003-05-27 by Austin Franklin
Hi Anthony, ... Correct. ... Well, for the most part, correct. There may be something being done, but that is scanner dependant, and I d say I know of
RE: [Digital BW] Re: Scanning
2003-05-27 by Austin Franklin
Hi, ... Correct, not in regular CCD film scanners like the ones we all use. ... That depends on which user interface you like. I happen to like my scanner s
Re: [Digital BW] Re: Scanning
2003-05-27 by Anthony Atkielski
... So, apart from analog gain (exposure time), there isn t anything you can do in the software driving a scanner that actually changes the analog scanning
Re: [Digital BW] Re: Scanning
2003-05-27 by Anthony Atkielski
... But that is downstream of the ADC, right? Nobody is adjusting the linearity of the analog side of the scanner, I assume (?). Not even sure if that can be
[Digital BW] Re: Scanning
2003-05-27 by B. Alex Pettit Jr.
Hi Austin, My thoughts : Increasing the number of electrons up to near the full well depth of the CCD ( for white ) will optimize the the number of values
RE: [Digital BW] Re: Scanning
2003-05-27 by Austin Franklin
Hi Martin, ... There are only two things that you have control over. The exposure time and the tonal curve (the LUT in the scanner that gets loaded with
RE: [Digital BW] Re: Scanning
2003-05-27 by Austin Franklin
Hi Anthony, ... Why yes! I d say all of them! This is what you are adjusting when you adjust the tonal curves in the scanner software. Typically, this data
Re: [Digital BW] Re: Scanning
2003-05-27 by Martin Wesley
... From: Austin Franklin To: Sent: Tuesday, May 27, 2003 10:40 AM Subject: RE:
RE: [Digital BW] Re: Scanning
2003-05-27 by Austin Franklin
... Good grief, Anthony! I actually agree with you here ;-) Clearly the signal coming from the CCD is an analog signal...or why would we use an Analog to
RE: [Digital BW] Re: Scanning
2003-05-27 by Austin Franklin
Hi Anthony, ... Bingo. That is exactly when changing exposure time will bring the data into the range of the CCD and the A/D. Regards, Austin
Re: [Digital BW] Re: Scanning
2003-05-27 by Anthony Atkielski
... Logically, if the noise floor does not rise as quickly as the maximum signal as exposure increases, then dynamic range will increase. For example, with
Re: [Digital BW] Re: Scanning
2003-05-27 by Anthony Atkielski
... Are there any scanners that allow adjustment of this third parameter?
Re: [Digital BW] Re: Scanning
2003-05-27 by Anthony Atkielski
... It s the other way around: It s a misnomer to call a CCD digital. If you call a CCD digital because it deals with electrons, you ll have to call every
Re: [Digital BW] Re: Scanning
2003-05-27 by Anthony Atkielski
... The only time I ve actually played with the so-called analog gain has been when the data was banging against the bottom or top of the histogram. The
(no subject)
2003-05-27 by borismgk
I am using an epson 1270 printer which up until now has been working great. It now is not taking up the paper. The red light comes on and a message comes up
Re: [Digital BW] best course of action to print black&white on Epsons 2200
2003-05-27 by Martin Wesley
... From: alaskangiant2000 To: Sent: Tuesday, May 27, 2003 8:54 AM Subject:
RE: [Digital BW] Re: Scanning
2003-05-27 by Austin Franklin
Truman, My experience through literally thousands of hours of design and testing digital imaging systems is that all you do when you increase the exposure time
Re: [Digital BW] A suggestion about scanning b&w negatives
2003-05-27 by Martin Wesley
... From: Jean-Marc Humbert To: Sent: Tuesday, May 27, 2003 1:01 AM Subject: [Digital
Re: [Digital BW] Re: Scanning
2003-05-27 by Truman Prevatt
A CCD will work as an integrator. That s the way they are used in wideband optical signal processing systems where you are using a laser to illuminate a
Re: Disappointing 1160 MIS VM Results
2003-05-27 by baduerr
... I m I ve figured out what I was doing wrong. I was printing under Mac OS 10.2.6 using the gimp-print driver. When I switched to OS 9.2 using the epson
Re: [Digital BW] best course of action to print black&white on Epsons 2200
2003-05-27 by Julian Thomas
there really isn t an answer to this you know. Just ask 20 people what there fave film is. Give 20 people a neg and they ll print it 20 different ways. All the
best course of action to print black&white on Epsons 2200
2003-05-27 by alaskangiant2000
I ve did the research and read the articles and e-mail. The question is to the people in the group that have tried the different methods. WHICH METHOD IS THE
Re: [Digital BW] Re: Scanning
2003-05-27 by Kevin Gulstene
Allesandro- Interesting. ... The raw data is all crammed up against one end of the histogram. Somewhere along the workflow is needs to be stretched by
Re: Action to remove dirt and dust
2003-05-27 by dna_99_99
film cleaner works remarkably well too.
Re: [Digital BW] Disappointing 1160 MIS VM Results
2003-05-27 by Edward Wiseman
I ve used your exact set-up with Paul s curves, and now I m using the original Sepia VM set, also with Paul s curves, and I m having great results IMHO..Are
RE: [Digital BW] Permajet papers
2003-05-27 by Daniel Staver
... I recieved my sample pack from MIS today. I have only tested the Portrait Classic 300gsm so far, but it looks exactly like PhotoRag except for a slight
Disappointing 1160 MIS VM Results
2003-05-27 by baduerr
I m new using BW and can t seem the get a BW print that I like. I m using a 1160 with MIS s original VM inkset and Rourk s curves. My prints look flat