Epson printers - 2400 vs. 4800 ??
in [Digital Cameras]
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From: rafe b on 7 Jan 2006 00:14 On Fri, 6 Jan 2006 20:46:32 -0800, "Mark?" <mjmorgan(lowest even number here)@cox..net> wrote: >Kennedy McEwen wrote: >> In article <vtFvf.8033$V.4113(a)fed1read04>, Mark? >> <mjmorgan(a)cox.?.net.invalid> writes >>> >>> No, I quite understand that each dot is not intended as an >>> individually perceived unit, but rather a basis through which ink is >>> combined to form perceived color. Still...can anyone point to the >>> realization of a visually-perceived benefit of 9600dpi over, say, >>> 4800? >> Reduces tonal noise at the visual acuity limit, which is all that a >> finer dither matrix is intended to achieve. > >Yes. >We know that. >But is the difference between 4800 (for example) and 9600 able to be >visually perceived without a loupe? That would depend on a lot of factors, such as the relationship of the final ink-dot size (after diffusion into the paper surface) and the dot pitch and the number of colors used. I think the main benefit at that point would be improved tonality (bit-depth, in effect) rather than detail. rafe b www.terrapinphoto.com
From: Nicholas O. Lindan on 7 Jan 2006 11:34 "Arthur Entlich" <e-printerhelp(a)mvps.org> wrote > The real question about companies that claim 9600 dpi inkjet resolution > or what have you is can this be accomplished with the minimum dot size > they offer? Well, 9600 dots/inch can be done with 1 inch dots [splats], allowing for some overlap. Sounds dumb but it would be legitimate if the printer was adding density with each splat. Dot size / dot density / pixel density are all independent; excepting the pathological case of dot size >> pixel size. The relationship between dot density and pixel density sets the number of shades that can be produced by the printer. And this has _nothing_ to do with gamma correction. -- Nicholas O. Lindan, Cleveland, Ohio Consulting Engineer: Electronics; Informatics; Photonics. To reply, remove spaces: n o lindan at ix . netcom . com Fstop timer - http://www.nolindan.com/da/fstop/index.htm
From: Mark? on 7 Jan 2006 15:39 Kennedy McEwen wrote: > In article <pHHvf.8103$V.4412(a)fed1read04>, Mark? > <mjmorgan(a)cox.?.net.invalid> writes >> Kennedy McEwen wrote: >>> In article <vtFvf.8033$V.4113(a)fed1read04>, Mark? >>> <mjmorgan(a)cox.?.net.invalid> writes >>>> >>>> No, I quite understand that each dot is not intended as an >>>> individually perceived unit, but rather a basis through which ink >>>> is combined to form perceived color. Still...can anyone point to >>>> the realization of a visually-perceived benefit of 9600dpi over, >>>> say, 4800? >>> Reduces tonal noise at the visual acuity limit, which is all that a >>> finer dither matrix is intended to achieve. >> >> Yes. >> We know that. >> But is the difference between 4800 (for example) and 9600 able to be >> visually perceived without a loupe? >> > Well since 4800 still results in visible noise below the eye > resolution limit, albeit made more obvious with a loupe, that is > clearly due to dither then even without seeing the results the answer > must be a clear "yes". I'd love to see a real world comparison...
From: Nicholas O. Lindan on 7 Jan 2006 16:12 "Mark?" <mjmorgan(lowest even number here)@cox..net> wrote > > > > 9600! > > > 4800! > > 1200! > I'd love to see a real world comparison... Go to the Epson dealer and see for one's self? Everybody will have a different opinion: "I can't see it.", "Plain as day.", "Costs too much", "A bargain." .... -- Nicholas O. Lindan, Cleveland, Ohio Consulting Engineer: Electronics; Informatics; Photonics. To reply, remove spaces: n o lindan at ix . netcom . com Fstop timer - http://www.nolindan.com/da/fstop/index.htm
From: Mark? on 7 Jan 2006 16:44
Nicholas O. Lindan wrote: > "Mark?" <mjmorgan(lowest even number here)@cox..net> wrote > >>>>> 9600! >>>> 4800! >>> 1200! >> I'd love to see a real world comparison... > > Go to the Epson dealer and see for one's self? Everybody > will have a different opinion: "I can't see it.", "Plain > as day.", "Costs too much", "A bargain." .... Good idea...except Epson doesn't do 9600dpi. :) |