QUOTE (MarkDS @ May 7 2007, 08:26 AM)
Hi Jeff,
I see from the time of morning you posted these results you went at it with great gusto and determination, and may have resolved it. Half-past midnight I decided to let it all hang-over till this morning and have another go at it today. In principle I should be able to replicate your results, so I shall follow your recipe and see what happens. I'll let you know. Meanwhile a great many thanks for taking the time and trouble to research it into the wee hours of the morning.
Cheers,
Mark
Hi Jeff,
OK, better later than never. I have now finished testing all this as completely as I can. In setting up a logical experimentation matrix, one tables the possible combinations of events that will trigger a result, try each one of them, and measure the result. That is what I have done. I hasten to add one could argue this is something Adobe should done also and advised their customers accordingly, but let us set the corporate performance issue on the shelf and stay focused on outcomes.
Now, given the variables at play in the exercise, you can have Centering ("C" hereafter) On or Off in Photoshop (PS hereafter), On or Off in the Epson Driver (Epson hereafter) and for either of those in Epson you can select Standard or Maximum coverage. That gives you 2x2x2 = 8 possible combinations. To insure no scew-ups in test implementation I laid them all out in an Excel Spreadsheet, where each combination is separately identified in a matrix and the associated outcome described. I shall try attaching the matrix using this Board's attachment function. I have never done this before, so I don't know whether it will convey. So for insurance and clarity here are the options and results for each option:
(1) PS C on; Epson C on; standard; WAY OFF both dimensions
(2) PS C on; Epson C on; maximum; 1 mm OFF one dimension
(3) PS C on; Epson C off; standard; 10 mm OFF one dimension
(4) PS C on; Epson C off; maximum; 1 mm OFF one dimension
(5) PS C off; Epson C on; standard; WAY OFF both dimensions
(6) PS C off; Epson C on; maximum; 1 mm OFF one dimension
(7) PS C off; Epson C off; standard; 10 mm OFF one dimension
(8) PS C off; Epson C off; Maximum; 1 mm OFF one dimension
These results indicate two useful findings:
[a] results 1, 3, 5 and 7 are not useable.
[b] all results with "maximum" selected are useable.
The one suspicious outcome in this list is (8), where you can have C off in both places and still get a centered result as long as Epson has maximum selected. One wonders whether this happens due to the order in which the test is implemented and what sticks from one test to the next. So I sent the file away, brought it back and immediately implemented Option (8) - same outcome. To triple check this, I called-up a completely fresh, untouched raw image, processed it as I normally would and sent it to print selecting the Option (8) settings. The print still came out with the same good result. So the bottom lines seem to be as suggested in [a] and [b] above. If with further work I see reason to amend these conclusions I shall inform the community accordingly.
I should mention as well that the default printer annoyance remains. One can trade this annoyance for the annoyance of changing the default printer back and forth, but I maintain Adobe should fix this so that the Epson printer remains on tap in Photoshop until Photoshop is closed, like it does with CS2. In CS2, the printer selection sticks for Photoshop, but if I open any other application for which the default printer is the HP, of course the HP comes-up. That is how all this should behave.
I also believe that it behoves Adobe to issue a technical note to their Windows/Epson equipped customers notifying them that are workable and non workable combinations of options between CS3 and the Epson driver. In fact, they should do or commission to be done what I have done with a range of printer drivers and tell people what works with which driver. If this is only a Windows issue they need only do it for Windows, but if Macs are also affected, they should do both. Or, at the very least they should tell their customers of the need for the kind of systematic testing such as I have done in order to succeed with print centering. As of now, none of this is in any of their documentation that I have seen, and I have the fat white program manual. The only material remotely relevant on printing is between pages 532 and 535 where none of this is discussed. By the way, this is the best program manual they have ever produced for Photoshop. Recommended.