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mark_herring

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Posts posted by mark_herring

  1. A PC and MAC together...hmmmm: at first, they will get along fine. Eventually, however, they are going to fight. It is subtle at first: You try a key stroke on one that was meant for the other, and you get a surprise. Then you get file compatibility issues--especially using standardized MS software. Pretty soon, you'll notice that they play tricks on each other in the middle of the night. If you modify the PC, the MAC will sometimes get jealous and spontaneously pop open it's case--inviting you to rummage in its innards. Of course you cannot do this.

     

    All this proceeds until one or both has a meltdown, leaving you no choice but to convert to Linux (No problems there...)

  2. Confusing conversation here...

     

    Cropping normally means selecting a portion of the picture and deleting everything outside the selection. It makes no difference what the DPI settings are---you are still throwing away pixels.

     

    there are two ways to change image size and resolution in PS:

     

    1. crop----normally involves discarding part of the image

    2. image size---does not discard any of the image

     

    In both cases you can specify print size and DPI and whether the image is re-sampled.

  3. For Robert;

     

    Let's see....I think you just told us that you had one bad sample of a 3rd party ink, and that proves that it is best to stick with OEM.

     

    OK: I am using MIS pigment in my 1280 Epson. I get an archival solution which Epson does not offer in the 1280, and I get good-looking prints---ANd I dont have any reliability issues. This OBVIOUSLY proves that 3rd party is superior.

     

    actually, both assertions are just plain wrong. Some 3rd party solutions are clearly inferior to OEM and some are better. And it is certainly true that OEM can be the safest solution--if not the best or the cheapest.

  4. Lots of traffic lately on the pros and cons of OEM vs 3rd party

    consumables. Two pretty polarized camps are evident:

    I. Locked into the OEM-only idea

    II. Lots of experience with--and confidence in--the 3rdparty products

     

    And of course MANY people somewhere in between.

     

    I offer a few basic observations:

     

    1. The printer manufacturers WANT you in group I--that is their

    business model, and they will spend big bucks on advertising to

    promote it. Remember all the stories about how Detroit manipulated

    the public to NEED all manner of things in cars---many of which

    turned out to be very bad ideas. Never underestimate the power of

    advertising

     

    2. To support the business model--and their reputation--the big OEMs

    will invest heavily in testing paper and ink combos. Thus you have

    some assurance of consistent results with OEM consumables.

     

    3. The reality of #2 does NOT negate the existence of other ink and

    paper combos that are equal to or better than OEM. There are

    infinite combinations---some good and some not. Many non-OEM

    solutions are better than OEM.

     

    4. There is no basis in any fundamental chemistry or physics to say

    that 3rd party ink and paper cannot match or exceed OEM. Even if a

    particular ink formula were to be patented, it would be virtually

    unenforceable.

     

    5. There's a lot of testing in place for specific 3rd party

    products, and many offer better performance than OEM in some aspect---

    eg lifetime.

     

    6. There is a sizable group of professionals and advanced amateurs

    that have found good non-OEM combinations and are selling their work

    in serious markets. This group cannot be dismissed. I have read

    material from specific professionals that demonstrated an

    understanding of the issues far beyond what I ever hear from a

    printer manufaturer. For just one example, look at Paul Roark's site

    (a user of MIS B&W inksets).

     

    Saying the you MUST have OEM to get good results is like saying that

    your car will not work properly without OEM tires, oil,belts,

    batteries....etc etc. What's pretty humorous about this is that car

    manufacturers buy many things from subcontractors---many of whom also

    sell to the repair and maintenance trade. You can very easily

    imagine buying something from Ford that is the same as what you would

    buy from Pep Boys. I wonder if this is happening in printer-land....

  5. Warranties are written to protect the seller--not the buyer.

     

    My 1280 is out of warranty, and the MIS pigment ink shows no sign of damaging anything. If it does, I'll repair or replace the printer.

     

    The manufacturers want you to believe that it is bad to print with 3rd party ink---their business model depends on it. The idea has no basis in any fundamentals---Buy into it and you will pay more for less results. Your choice.

     

    Imagine Toyota arguing that you had to use their tires, oil, or batteries or you would void your warranty--or even die in a horrible accident.

  6. Using a Canon and sticking to OEM ink and paper guarantees that you are not using the most archival solution available.

     

    The only thing guaranteed by an OEM combination is some level of predictability. There is no basis in any fundamentals for saying that something besides OEM cannot be equal to or better than OEM.

     

    Read up on all the people using Epson printers with either OEM or 3rd party archival pigment ink---and on the issues with trying to use pigment with the HP or Canon head technology.

     

    The printer companies have built a business model based on having you believe that you need to use their ink and paper. The basic premise has no more credibility than if Toyota tried to claim that you had to use their brand of tires, oil, or batteries.

  7. A few random observations and questions on this thread:

     

    Is there any confirmation of HP's longevity claims? Most of my reading says pigment is better than any dye--even with special papers.

     

    Many feel that the best for B&W is a 3rd party B&W inkset in one of several Epson models.

     

    There is nothing magic about OEM paper (or ink). they are just a few of the zillions of possible combination that the mfg has checked. Its just like Kodak darkroom paper in Dektol---work fine, but so do many other combinations.

  8. I agree that Michael was not whining.

     

    Here's a different perspective: When will Adobe port photoshop to Linux?

     

    I would give anything to become Microsoft-free. I do not, however, want to give up Photoshop. The conflict is unbearable....:)

     

    If a significant number of Photographer/Computer nuts would jump on the Linux bandwagon, then the GIMP would fairly quicklymatch Photoshop and Adobe would have to do **something**.

     

    With OSX now being Unix-based, Photoshop for Linux cannot be that big a deal.

     

    Watch what Microsoft does when biggies like Adobe start supporting Linux....

  9. I'm a bit confused by one answer here...

     

    The effect is fundamentally a variation in specular reflection for various densities. This causes the print to look different at different viewing angles. It is not the same for different paper/ink combos--ie sometimes DARK areas look light at certain angles

     

    I was just sent some snaps printed on some kind of Kodak Printer. The effect is so bad, I wonder whey this printer was ever released.

  10. Another trick for emulating a shift lens is stitching.

     

    I have a number of pictures made by taking two or more shots--tilting the camera vertically between shots--and then stitching them in Panotools**. In the process of stitching, the perspective correction automatic. In this particular SW you have a lot of parameters that you can tweak--eg the reference point (the point where you eye would be looking straight on.

     

    The nice thing about Panotools is the unlimited ability to stitch both horizontally and vertically--with no need to control camera tilt.

    **I actually use PTAssembler, a GUI front end for Panotools developed by Max Lyons. He provides the whole package: www.tawbaware.com

  11. What causes noise?

     

    Small children, trash trucks, and any electronic system at a temperature above absolute zero. I think its the last category you're interested in....;)

     

    The dominant noise in digital imaging is called the "readout noise" in the sensor. For most applications, it is a constant. The reason that higher ISO seems to increase the noise is that the gain is increased, placing the noise higher in the digital encoding.

     

    For very long exposures, the variations in the dark signal may become dominant. These may appear as either random noise (indistiguishable from the read noise) or pattern noise---fixed patterns that appear the same in every image.

     

    The other major issue is the so-called "encoding noise" associated with the Analog to digital conversion process.

     

    Finally, you may see various artifacts associated with re-sampling and other imaging processes. The patterns in a low-quality JPG are a perfect example.

     

    There are a lot of combinations of things that can happen when you process so it's hard to give a comprehensive answer. As you gain experience, you will see what's important and what's not.

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